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+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: Okay, so let's solve this problem of mapping.
+
+3
+00:00:06,000 --> 00:00:08,000
+The thing is, if you want to map this, you don't have
+
+4
+00:00:08,000 --> 00:00:11,000
+to do any qualification for the XML, luckily.
+
+5
+00:00:11,000 --> 00:00:12,000
+We have to use annotation.
+
+6
+00:00:12,000 --> 00:00:14,000
+Now, which annotation we have to use?
+
+7
+00:00:14,000 --> 00:00:16,000
+So for this, for mapping the request,
+
+8
+00:00:16,000 --> 00:00:19,000
+we have to use annotation call RequestMapping.
+
+9
+00:00:19,000 --> 00:00:23,000
+And in this mapping you have to pass the path.
+
+10
+00:00:23,000 --> 00:00:24,000
+The path here is homepage.
+
+11
+00:00:24,000 --> 00:00:26,000
+So whenever someone calls the homepage,
+
+12
+00:00:26,000 --> 00:00:28,000
+this is something I want to execute.
+
+13
+00:00:28,000 --> 00:00:30,000
+It is as simple as that.
+
+14
+00:00:30,000 --> 00:00:32,000
+Just a request mapping, it will come to know
+
+15
+00:00:32,000 --> 00:00:34,000
+that this is a mapping we have to do,
+
+16
+00:00:34,000 --> 00:00:35,000
+which is for the slash.
+
+17
+00:00:35,000 --> 00:00:36,000
+Yeah, if you're doing for the students,
+
+18
+00:00:36,000 --> 00:00:37,000
+you can also say student.
+
+19
+00:00:37,000 --> 00:00:39,000
+So you can say slash student,
+
+20
+00:00:39,000 --> 00:00:40,000
+you will map for slash student,
+
+21
+00:00:40,000 --> 00:00:44,000
+but at this point I want to map it for the slash homepage.
+
+22
+00:00:44,000 --> 00:00:46,000
+And that's the only change you have to make.
+
+23
+00:00:46,000 --> 00:00:50,000
+Let's refresh this taking some time, go back to your browser
+
+24
+00:00:50,000 --> 00:00:52,000
+and say, refresh, done.
+
+25
+00:00:52,000 --> 00:00:54,000
+Something happened.
+
+26
+00:00:54,000 --> 00:00:56,000
+Okay, it's not the same thing which we were expecting.
+
+27
+00:00:56,000 --> 00:00:59,000
+We were expecting a page.
+
+28
+00:00:59,000 --> 00:01:00,000
+But you can see it says,
+
+29
+00:01:00,000 --> 00:01:04,000
+do you want to allow downloads on local host?
+
+30
+00:01:04,000 --> 00:01:07,000
+If I say allow, something got downloaded.
+
+31
+00:01:07,000 --> 00:01:10,000
+If I see here it says unknown file. I mean that's weird.
+
+32
+00:01:10,000 --> 00:01:13,000
+I was expecting a output on the page,
+
+33
+00:01:13,000 --> 00:01:16,000
+but it is giving me a download.
+
+34
+00:01:16,000 --> 00:01:18,000
+But if you really think about this download,
+
+35
+00:01:18,000 --> 00:01:22,000
+this is actually a file which has your JSP content.
+
+36
+00:01:22,000 --> 00:01:26,000
+So if you see this is the page which we are getting,
+
+37
+00:01:26,000 --> 00:01:29,000
+I don't want page, I want output, what's happening here?
+
+38
+00:01:29,000 --> 00:01:31,000
+So we'll talk about what is happening in some time.
+
+39
+00:01:31,000 --> 00:01:33,000
+It is not working the way we wanted,
+
+40
+00:01:33,000 --> 00:01:38,000
+but at least we are able to call this home.
+
+41
+00:01:38,000 --> 00:01:41,000
+This is working, right? So we have reached to this point
+
+42
+00:01:41,000 --> 00:01:43,000
+where we are able to call a particular method,
+
+43
+00:01:43,000 --> 00:01:45,000
+depend upon the mapping.
+
+44
+00:01:45,000 --> 00:01:47,000
+And request mapping is not the only method we have.
+
+45
+00:01:47,000 --> 00:01:48,000
+So apart from RequestMapping,
+
+46
+00:01:48,000 --> 00:01:50,000
+we also have GetMapping, PostMapping.
+
+47
+00:01:50,000 --> 00:01:52,000
+We'll see that later.
+
+48
+00:01:52,000 --> 00:01:54,000
+So if I say, I'll show you just a method name,
+
+49
+00:01:54,000 --> 00:01:57,000
+like we got GetMapping, PostMapping,
+
+50
+00:01:57,000 --> 00:01:59,000
+so we'll see that when to use what.
+
+51
+00:01:59,000 --> 00:02:01,000
+But at this point we're using RequestMapping
+
+52
+00:02:01,000 --> 00:02:04,000
+to map the request and is able to call the index.jsp.
+
+53
+00:02:04,000 --> 00:02:06,000
+Now question is no, why it's not working.
+
+54
+00:02:06,000 --> 00:02:09,000
+The reason it is not working is because by default,
+
+55
+00:02:09,000 --> 00:02:12,000
+springboard does not support JSP page.
+
+56
+00:02:12,000 --> 00:02:14,000
+So we have to basically convert.
+
+57
+00:02:14,000 --> 00:02:16,000
+So, remember we talked about conversion,
+
+58
+00:02:16,000 --> 00:02:18,000
+we have to convert your JSP into Servlet?
+
+59
+00:02:18,000 --> 00:02:22,000
+Who will do that? And that's where you need a help here.
+
+60
+00:02:22,000 --> 00:02:25,000
+So we have to add one more dependency to achieve that,
+
+61
+00:02:25,000 --> 00:02:28,000
+which is called a Tomcat Jasper.
+
+62
+00:02:28,000 --> 00:02:32,000
+So I will go to my browser and go to your MEN repository
+
+63
+00:02:32,000 --> 00:02:35,000
+and search for Tomcat Jasper.
+
+64
+00:02:35,000 --> 00:02:37,000
+This is the library which we want.
+
+65
+00:02:37,000 --> 00:02:41,000
+So if you click on this, okay, which one, which version?
+
+66
+00:02:41,000 --> 00:02:44,000
+Now this depend upon which version you're using
+
+67
+00:02:44,000 --> 00:02:45,000
+for your Tomcat.
+
+68
+00:02:45,000 --> 00:02:48,000
+So if you scroll down, the Tomcat version,
+
+69
+00:02:48,000 --> 00:02:51,000
+which we're using is 10.1.16.
+
+70
+00:02:51,000 --> 00:02:56,000
+Let's use the same one, which is here, click on this,
+
+71
+00:02:56,000 --> 00:02:57,000
+you need this dependency.
+
+72
+00:02:57,000 --> 00:03:01,000
+Go back, page it here. I don't want this advertisement.
+
+73
+00:03:02,000 --> 00:03:05,000
+Okay, let's import this particular package.
+
+74
+00:03:05,000 --> 00:03:07,000
+Reload your Maven. And that's done.
+
+75
+00:03:07,000 --> 00:03:10,000
+We got this dependency and I hope this time it'll work.
+
+76
+00:03:10,000 --> 00:03:13,000
+So if you go back to your browser now, go back
+
+77
+00:03:13,000 --> 00:03:15,000
+to your homepage, which was not working.
+
+78
+00:03:15,000 --> 00:03:20,000
+Let's do localhost:8080, enter, and boom,
+
+79
+00:03:20,000 --> 00:03:22,000
+you got the output, which is hello world.
+
+80
+00:03:22,000 --> 00:03:23,000
+This time it is not saying download is
+
+81
+00:03:23,000 --> 00:03:27,000
+because now we are able to convert the JSP into Servlet
+
+82
+00:03:27,000 --> 00:03:28,000
+and that's what is running now.
+
+83
+00:03:29,000 --> 00:03:32,000
+Oh, now you're not thinking, you know,
+
+84
+00:03:32,000 --> 00:03:33,000
+a lot of dependencies.
+
+85
+00:03:33,000 --> 00:03:35,000
+See, technically we'll not be using JSP in
+
+86
+00:03:35,000 --> 00:03:36,000
+your actual project, right?
+
+87
+00:03:36,000 --> 00:03:38,000
+You'll be using some front end technologies.
+
+88
+00:03:38,000 --> 00:03:41,000
+That's the, that's how we are building application now.
+
+89
+00:03:41,000 --> 00:03:44,000
+And what you will be turning there is the data. That's it.
+
+90
+00:03:44,000 --> 00:03:46,000
+So at this point, we are doing a page,
+
+91
+00:03:46,000 --> 00:03:47,000
+but we'll see how do we return data?
+
+92
+00:03:47,000 --> 00:03:52,000
+Not the page, but at this point it's working,
+
+93
+00:03:52,000 --> 00:03:53,000
+so let's be happy with it.
+
+94
+00:03:53,000 --> 00:03:56,000
+And we are using request mapping to map the request.
+
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new file mode 100644
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+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.10%20RequestMapping
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+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: So we got the homepage, which is hello world.
+
+3
+00:00:06,000 --> 00:00:08,000
+But then we don't want a simple page here, right?
+
+4
+00:00:08,000 --> 00:00:10,000
+Maybe I want to perform some operation.
+
+5
+00:00:10,000 --> 00:00:13,000
+See, the entire idea of having a backend
+
+6
+00:00:13,000 --> 00:00:16,000
+is where a user will request for something.
+
+7
+00:00:16,000 --> 00:00:18,000
+Maybe you want to add two numbers, simplest stuff,
+
+8
+00:00:18,000 --> 00:00:22,000
+or you want to find the data about something.
+
+9
+00:00:22,000 --> 00:00:24,000
+Or maybe you want to see the listing of a product
+
+10
+00:00:24,000 --> 00:00:26,000
+by the price.
+
+11
+00:00:26,000 --> 00:00:29,000
+So basically what you're doing is a client sends a request
+
+12
+00:00:29,000 --> 00:00:30,000
+for the server, server does some processing
+
+13
+00:00:30,000 --> 00:00:33,000
+and give something back to the client.
+
+14
+00:00:33,000 --> 00:00:35,000
+Now at this point, I don't don't want
+
+15
+00:00:35,000 --> 00:00:36,000
+to get into complex logic
+
+16
+00:00:36,000 --> 00:00:39,000
+because we are here to learn Spring Framework,
+
+17
+00:00:39,000 --> 00:00:42,000
+not to make complex logic.
+
+18
+00:00:42,000 --> 00:00:44,000
+And that's why we'll go for a simple example.
+
+19
+00:00:44,000 --> 00:00:45,000
+How do we add two numbers?
+
+20
+00:00:45,000 --> 00:00:48,000
+Now, why we are doing this for a simple reason, we want
+
+21
+00:00:48,000 --> 00:00:50,000
+to send some data to the server.
+
+22
+00:00:50,000 --> 00:00:53,000
+We want to ask server, Hey, you know you have
+
+23
+00:00:53,000 --> 00:00:54,000
+to do something for me.
+
+24
+00:00:54,000 --> 00:00:56,000
+Sever say, "okay, we'll do it."
+
+25
+00:00:56,000 --> 00:00:58,000
+Give back the data to the client.
+
+26
+00:00:58,000 --> 00:01:01,000
+That's the process we want to achieve. So how do we do that?
+
+27
+00:01:01,000 --> 00:01:03,000
+So first of all, in this homepage, I don't want
+
+28
+00:01:03,000 --> 00:01:05,000
+to simply print a hello world.
+
+29
+00:01:05,000 --> 00:01:08,000
+Maybe I want to add two numbers and to achieve that,
+
+30
+00:01:08,000 --> 00:01:11,000
+first of all, you need a page where you can add two numbers.
+
+31
+00:01:11,000 --> 00:01:13,000
+So what I will do is I need a form here
+
+32
+00:01:13,000 --> 00:01:14,000
+so they can submit data.
+
+33
+00:01:14,000 --> 00:01:17,000
+So when I say form, it means I need two text field.
+
+34
+00:01:17,000 --> 00:01:20,000
+I need a button where I can click the button
+
+35
+00:01:20,000 --> 00:01:24,000
+and this two text field data should go to the server.
+
+36
+00:01:24,000 --> 00:01:26,000
+And for that we have to create a form.
+
+37
+00:01:26,000 --> 00:01:28,000
+Now instead of wasting our time writing the code,
+
+38
+00:01:28,000 --> 00:01:30,000
+I do have the code with me.
+
+39
+00:01:30,000 --> 00:01:31,000
+So that's our simple form.
+
+40
+00:01:31,000 --> 00:01:35,000
+You can see I'm using a label for enter the first number,
+
+41
+00:01:35,000 --> 00:01:37,000
+and then we have a text typed
+
+42
+00:01:37,000 --> 00:01:40,000
+or text box you can say, which is a typed text
+
+43
+00:01:40,000 --> 00:01:42,000
+and it takes a number.
+
+44
+00:01:42,000 --> 00:01:43,000
+And the ID for that is num1,
+
+45
+00:01:43,000 --> 00:01:45,000
+because these ID are important.
+
+46
+00:01:45,000 --> 00:01:48,000
+And then the ID for the second one is num2.
+
+47
+00:01:48,000 --> 00:01:51,000
+And then we have a button there which is called submit.
+
+48
+00:01:51,000 --> 00:01:53,000
+And maybe I just want to change this from hello world
+
+49
+00:01:53,000 --> 00:01:56,000
+to Telusko Calculator.
+
+50
+00:01:56,000 --> 00:02:00,000
+That's it. Nothing fancy, just a simple page here.
+
+51
+00:02:00,000 --> 00:02:02,000
+And now let me restart this
+
+52
+00:02:02,000 --> 00:02:04,000
+just to see if I can get this page.
+
+53
+00:02:04,000 --> 00:02:06,000
+Is it looking good on the screen?
+
+54
+00:02:06,000 --> 00:02:10,000
+So go back to your browser and say refresh, take some time
+
+55
+00:02:10,000 --> 00:02:11,000
+and you can see we got a calculator.
+
+56
+00:02:11,000 --> 00:02:12,000
+Not looking good.
+
+57
+00:02:12,000 --> 00:02:13,000
+But again, we are not here
+
+58
+00:02:13,000 --> 00:02:16,000
+to make some beautiful things, right?
+
+59
+00:02:16,000 --> 00:02:18,000
+I mean we want to make beautiful things,
+
+60
+00:02:18,000 --> 00:02:20,000
+but not in the front end, in the back end.
+
+61
+00:02:20,000 --> 00:02:21,000
+But still it doesn't look good, right?
+
+62
+00:02:21,000 --> 00:02:23,000
+Let's have something here.
+
+63
+00:02:23,000 --> 00:02:25,000
+So what I will do is I will create a CSS file here
+
+64
+00:02:27,000 --> 00:02:28,000
+just to style this stuff.
+
+65
+00:02:28,000 --> 00:02:30,000
+Let me create a CSS file here.
+
+66
+00:02:30,000 --> 00:02:33,000
+So I'll say style.css.
+
+67
+00:02:33,000 --> 00:02:38,000
+And in this style.css, I want to have some CSS code.
+
+68
+00:02:38,000 --> 00:02:40,000
+And again, I'm not here to teach you CSS.
+
+69
+00:02:40,000 --> 00:02:43,000
+So let me just get some CSS file here
+
+70
+00:02:43,000 --> 00:02:45,000
+just to make our page beautiful.
+
+71
+00:02:45,000 --> 00:02:48,000
+And we have to also make sure that we use the CSS here.
+
+72
+00:02:48,000 --> 00:02:51,000
+So I'll put that in the head tag
+
+73
+00:02:51,000 --> 00:02:53,000
+and we have to provide the link for the CSS
+
+74
+00:02:53,000 --> 00:02:55,000
+and let me do that here.
+
+75
+00:02:55,000 --> 00:02:56,000
+So basically by doing this,
+
+76
+00:02:56,000 --> 00:03:00,000
+what we are doing is we are having a CSS in the code so
+
+77
+00:03:00,000 --> 00:03:03,000
+that it'll make the page bit beautiful, not very beautiful
+
+78
+00:03:03,000 --> 00:03:06,000
+because we tried to use some Java theme, coffee theme
+
+79
+00:03:06,000 --> 00:03:08,000
+here with the CSS.
+
+80
+00:03:08,000 --> 00:03:09,000
+Let's see if that works out.
+
+81
+00:03:09,000 --> 00:03:12,000
+Let's run this and taking some time.
+
+82
+00:03:12,000 --> 00:03:15,000
+Okay, so you got a page here.
+
+83
+00:03:15,000 --> 00:03:17,000
+Not great looking but manageable, right?
+
+84
+00:03:17,000 --> 00:03:20,000
+So we've got a page and I can provide some numbers here.
+
+85
+00:03:20,000 --> 00:03:22,000
+So let's say I want to add six and seven,
+
+86
+00:03:22,000 --> 00:03:26,000
+and the output I want here is 13.
+
+87
+00:03:26,000 --> 00:03:27,000
+Now of course we will say, Hey, we can do that
+
+88
+00:03:27,000 --> 00:03:28,000
+with simple JavaScript, right?
+
+89
+00:03:28,000 --> 00:03:31,000
+We can write a client site code, add this to number,
+
+90
+00:03:31,000 --> 00:03:32,000
+see we can do whatever we want.
+
+91
+00:03:32,000 --> 00:03:36,000
+We can simply take a mobile phone, get a open the calculator
+
+92
+00:03:36,000 --> 00:03:37,000
+and add this two numbers.
+
+93
+00:03:37,000 --> 00:03:38,000
+Not the main thing here.
+
+94
+00:03:38,000 --> 00:03:40,000
+The main thing is what if I want
+
+95
+00:03:40,000 --> 00:03:43,000
+to build a Spring application where the client sends data
+
+96
+00:03:43,000 --> 00:03:45,000
+to the server and you want to perform some operation.
+
+97
+00:03:45,000 --> 00:03:49,000
+So when I click on submit here, I want this to work.
+
+98
+00:03:49,000 --> 00:03:52,000
+And you can, you can see at this point it says 4 0 4.
+
+99
+00:03:52,000 --> 00:03:54,000
+So basically your server is not happy by saying, hey,
+
+100
+00:03:54,000 --> 00:03:57,000
+you know, you're sending some request
+
+101
+00:03:57,000 --> 00:03:59,000
+and I don't have any idea what you want me to do.
+
+102
+00:03:59,000 --> 00:04:02,000
+I would say, okay, it's not very complex.
+
+103
+00:04:02,000 --> 00:04:04,000
+If someone sends request for the add.
+
+104
+00:04:04,000 --> 00:04:06,000
+Now you can see when you say submit it,
+
+105
+00:04:06,000 --> 00:04:08,000
+you're sending a request for the add URL.
+
+106
+00:04:09,000 --> 00:04:12,000
+And if you observe the URL here, which is not visible
+
+107
+00:04:12,000 --> 00:04:14,000
+by default in Safari,
+
+108
+00:04:14,000 --> 00:04:15,000
+but you can see we got a URL here,
+
+109
+00:04:15,000 --> 00:04:19,000
+it says localized:8080/add.
+
+110
+00:04:19,000 --> 00:04:21,000
+Then we are passing two values.
+
+111
+00:04:21,000 --> 00:04:23,000
+So in the URL itself, we are passing the values.
+
+112
+00:04:23,000 --> 00:04:26,000
+Number one value is six, and num two value is seven.
+
+113
+00:04:26,000 --> 00:04:29,000
+And the URL and the request we're sending is for the add.
+
+114
+00:04:29,000 --> 00:04:31,000
+Okay? Initially we were sending the request
+
+115
+00:04:31,000 --> 00:04:32,000
+for the homepage, but now we are sending the
+
+116
+00:04:32,000 --> 00:04:33,000
+request for the add.
+
+117
+00:04:33,000 --> 00:04:34,000
+Okay.
+
+118
+00:04:34,000 --> 00:04:36,000
+That means we need a controller
+
+119
+00:04:36,000 --> 00:04:38,000
+who can accept this request.
+
+120
+00:04:38,000 --> 00:04:41,000
+Now question arise how we look, create that controller.
+
+121
+00:04:41,000 --> 00:04:42,000
+Let's see that in the next video.
+
diff --git a/12 - Spring  Boot Web/011 Source-Code.url b/12 - Spring  Boot Web/011 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..1d8953f18b5268b8965d6064c21123c1a8687c6c
--- /dev/null
+++ b/12 - Spring  Boot Web/011 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.11%20Sending%20data%20to%20Controller
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/012 Accepting Data the servlet way_en.srt b/12 - Spring  Boot Web/012 Accepting Data the servlet way_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..76a68f00186798377d21d9bd8e36ec7251f8d32e
--- /dev/null
+++ b/12 - Spring  Boot Web/012 Accepting Data the servlet way_en.srt	
@@ -0,0 +1,744 @@
+1
+00:00:00,000 --> 00:00:03,000
+(soft music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: Now, let's try to create a controller
+
+3
+00:00:06,000 --> 00:00:08,000
+which can accept this request.
+
+4
+00:00:08,000 --> 00:00:09,000
+Because if you see the HomeController.
+
+5
+00:00:09,000 --> 00:00:13,000
+Of course, we can create a new controller here, a new class,
+
+6
+00:00:13,000 --> 00:00:16,000
+but then Spring allows you to have multiple controllers
+
+7
+00:00:16,000 --> 00:00:17,000
+in one controller.
+
+8
+00:00:17,000 --> 00:00:18,000
+So what I'm saying is
+
+9
+00:00:18,000 --> 00:00:21,000
+Spring allows you to have multiple requests
+
+10
+00:00:21,000 --> 00:00:24,000
+mapped in one particular controller.
+
+11
+00:00:24,000 --> 00:00:26,000
+And logically, if you have different types of controllers,
+
+12
+00:00:26,000 --> 00:00:28,000
+let's say you have different types of requests.
+
+13
+00:00:28,000 --> 00:00:30,000
+So if you're making an e-commerce website
+
+14
+00:00:30,000 --> 00:00:34,000
+and you want to request for user, so user addition,
+
+15
+00:00:34,000 --> 00:00:38,000
+or maybe adding a user, deleting a user, or updating a user,
+
+16
+00:00:38,000 --> 00:00:40,000
+so everything that deals with the user,
+
+17
+00:00:40,000 --> 00:00:41,000
+you can put that in one controller.
+
+18
+00:00:41,000 --> 00:00:44,000
+Maybe you can have the controller for products
+
+19
+00:00:44,000 --> 00:00:46,000
+where you can add a product, remove a product,
+
+20
+00:00:46,000 --> 00:00:48,000
+update a product.
+
+21
+00:00:48,000 --> 00:00:51,000
+You can also have a controller for orders, place the order,
+
+22
+00:00:51,000 --> 00:00:54,000
+delete the order, change the status of the order.
+
+23
+00:00:54,000 --> 00:00:57,000
+So you can have that in the OrderController.
+
+24
+00:00:57,000 --> 00:00:59,000
+But here, since we only have two controls now,
+
+25
+00:00:59,000 --> 00:01:02,000
+let's work with the same HomeController.
+
+26
+00:01:02,000 --> 00:01:02,000
+So what I will do is,
+
+27
+00:01:02,000 --> 00:01:05,000
+if you want to have something that will accept the request,
+
+28
+00:01:05,000 --> 00:01:06,000
+you have to create another method.
+
+29
+00:01:06,000 --> 00:01:09,000
+So at this point, I will say public String
+
+30
+00:01:09,000 --> 00:01:12,000
+because maybe I want to return a page, of course, right?
+
+31
+00:01:12,000 --> 00:01:15,000
+When you add two numbers, you also want a page,
+
+32
+00:01:15,000 --> 00:01:17,000
+and that's what you're expecting in the browser.
+
+33
+00:01:17,000 --> 00:01:20,000
+So if you see in the output, when you send this request,
+
+34
+00:01:20,000 --> 00:01:23,000
+this should be another page.
+
+35
+00:01:23,000 --> 00:01:24,000
+Okay, so that means I have to return something,
+
+36
+00:01:24,000 --> 00:01:26,000
+and then we can have a method name.
+
+37
+00:01:26,000 --> 00:01:28,000
+Method name can be anything. I will say add here
+
+38
+00:01:28,000 --> 00:01:30,000
+and open bracket close.
+
+39
+00:01:30,000 --> 00:01:33,000
+Okay, now here, I want to return the name of a page.
+
+40
+00:01:33,000 --> 00:01:34,000
+So what's should be the name of the page?
+
+41
+00:01:34,000 --> 00:01:36,000
+I will simply say return.
+
+42
+00:01:36,000 --> 00:01:38,000
+We can return any page name.
+
+43
+00:01:38,000 --> 00:01:42,000
+I will say return "result.jsp".
+
+44
+00:01:42,000 --> 00:01:44,000
+And, okay, that's done.
+
+45
+00:01:44,000 --> 00:01:45,000
+But then will it be getting called?
+
+46
+00:01:45,000 --> 00:01:47,000
+Of course not.
+
+47
+00:01:47,000 --> 00:01:49,000
+So basically, we have to map it.
+
+48
+00:01:49,000 --> 00:01:50,000
+Now how do you map it?
+
+49
+00:01:50,000 --> 00:01:53,000
+Of course, for mapping, we can use @RequestMapping.
+
+50
+00:01:53,000 --> 00:01:56,000
+And then in the bracket, we can mention the URL.
+
+51
+00:01:56,000 --> 00:02:01,000
+The URL for this is add, because if you see on the homepage,
+
+52
+00:02:01,000 --> 00:02:04,000
+we are saying, "This is my website name,
+
+53
+00:02:04,000 --> 00:02:09,000
+and then this is the URL," the URL path basically,
+
+54
+00:02:09,000 --> 00:02:10,000
+and that's what you have to mention.
+
+55
+00:02:10,000 --> 00:02:11,000
+This is for the add request,
+
+56
+00:02:11,000 --> 00:02:13,000
+and this method should be called.
+
+57
+00:02:13,000 --> 00:02:14,000
+Is it really working?
+
+58
+00:02:14,000 --> 00:02:15,000
+Let's try.
+
+59
+00:02:15,000 --> 00:02:17,000
+So what I will do is, before making any changes,
+
+60
+00:02:17,000 --> 00:02:19,000
+let's rerun this and see the output.
+
+61
+00:02:19,000 --> 00:02:21,000
+Go back to your browser,
+
+62
+00:02:21,000 --> 00:02:23,000
+and I will just say "Submit" once again,
+
+63
+00:02:23,000 --> 00:02:27,000
+because I have not made any changes in the index.jsp.
+
+64
+00:02:27,000 --> 00:02:30,000
+I will click on "Submit," and we got an error.
+
+65
+00:02:30,000 --> 00:02:32,000
+It may not be able to find it,
+
+66
+00:02:32,000 --> 00:02:34,000
+or maybe I will just refresh the page.
+
+67
+00:02:37,000 --> 00:02:39,000
+Is the mapping happening?
+
+68
+00:02:39,000 --> 00:02:40,000
+Maybe it is happening,
+
+69
+00:02:40,000 --> 00:02:42,000
+or maybe it is searching for result.jsp.
+
+70
+00:02:42,000 --> 00:02:44,000
+Not able to find it the result.jsp.
+
+71
+00:02:44,000 --> 00:02:45,000
+To prove that or to check that,
+
+72
+00:02:45,000 --> 00:02:49,000
+we can say "in add" just to see if this is working.
+
+73
+00:02:49,000 --> 00:02:50,000
+You know, we should always go step by step;
+
+74
+00:02:50,000 --> 00:02:53,000
+otherwise, we are not sure at what point we got the error.
+
+75
+00:02:53,000 --> 00:02:55,000
+So I'm just saying "in add" now.
+
+76
+00:02:55,000 --> 00:02:59,000
+Let's go back here and say "Submit,"
+
+77
+00:03:00,000 --> 00:03:02,000
+and you can see in this it says "in add."
+
+78
+00:03:02,000 --> 00:03:05,000
+So that means, yes, we are able to call this.
+
+79
+00:03:05,000 --> 00:03:08,000
+But now, it's not just about calling this, right?
+
+80
+00:03:08,000 --> 00:03:10,000
+Basically, it's not able to find result.jsp.
+
+81
+00:03:10,000 --> 00:03:14,000
+Do we have result.jsp in the file, or we don't yet?
+
+82
+00:03:14,000 --> 00:03:15,000
+So let me create a file,
+
+83
+00:03:15,000 --> 00:03:18,000
+or maybe I will just copy-paste this index.jsp here
+
+84
+00:03:18,000 --> 00:03:21,000
+with a different name: result.jsp.
+
+85
+00:03:21,000 --> 00:03:24,000
+And we don't need a form here, okay?
+
+86
+00:03:24,000 --> 00:03:26,000
+What we need is to print something.
+
+87
+00:03:26,000 --> 00:03:30,000
+So I'll print "Result is."
+
+88
+00:03:30,000 --> 00:03:30,000
+That's it.
+
+89
+00:03:30,000 --> 00:03:32,000
+Nothing fancy, I'm just saying "Result is."
+
+90
+00:03:32,000 --> 00:03:34,000
+If I refresh, you can see it says "Result is."
+
+91
+00:03:34,000 --> 00:03:36,000
+So it is able to find the page now,
+
+92
+00:03:36,000 --> 00:03:37,000
+but we are not printing anything.
+
+93
+00:03:37,000 --> 00:03:40,000
+So what is happening is, when you send the first request,
+
+94
+00:03:40,000 --> 00:03:41,000
+the request goes to the homepage.
+
+95
+00:03:41,000 --> 00:03:43,000
+It is bringing index.jsp.
+
+96
+00:03:43,000 --> 00:03:47,000
+From index.jsp, you are basically sending an add request,
+
+97
+00:03:47,000 --> 00:03:48,000
+and the add request says,
+
+98
+00:03:48,000 --> 00:03:50,000
+"Okay, we have to call result.jsp."
+
+99
+00:03:50,000 --> 00:03:53,000
+But the question arise, who is doing this mapping?
+
+100
+00:03:53,000 --> 00:03:54,000
+If you go back to servlets,
+
+101
+00:03:54,000 --> 00:03:55,000
+remember, for every servlet
+
+102
+00:03:55,000 --> 00:03:58,000
+we have to do the mapping in the XML file.
+
+103
+00:03:58,000 --> 00:04:01,000
+We are not doing mapping here, so who is calling it?
+
+104
+00:04:01,000 --> 00:04:03,000
+So the thing is, there's something called DispatcherServlet.
+
+105
+00:04:03,000 --> 00:04:05,000
+Again, we will not be discussing much
+
+106
+00:04:05,000 --> 00:04:06,000
+about DispatcherServlet now.
+
+107
+00:04:06,000 --> 00:04:07,000
+We will be talking about that later.
+
+108
+00:04:07,000 --> 00:04:09,000
+But there is DispatcherServlet
+
+109
+00:04:09,000 --> 00:04:11,000
+who is responsible for mapping all these requests.
+
+110
+00:04:11,000 --> 00:04:13,000
+So it sees, "Okay, what is the request?
+
+111
+00:04:13,000 --> 00:04:15,000
+This is the request, call this method.
+
+112
+00:04:15,000 --> 00:04:17,000
+This is the request, call this method.
+
+113
+00:04:17,000 --> 00:04:19,000
+Someone is returning index.jsp, search for it."
+
+114
+00:04:19,000 --> 00:04:22,000
+So that's the job of DispatcherServlet.
+
+115
+00:04:22,000 --> 00:04:23,000
+Again, we will discuss that later.
+
+116
+00:04:23,000 --> 00:04:25,000
+But yeah, it is able to call it.
+
+117
+00:04:25,000 --> 00:04:27,000
+Okay, so that's the step one.
+
+118
+00:04:27,000 --> 00:04:30,000
+The next step is, basically, we have to accept the values.
+
+119
+00:04:30,000 --> 00:04:34,000
+Remember, in the browser, we are sending these values.
+
+120
+00:04:34,000 --> 00:04:36,000
+We have to accept them.
+
+121
+00:04:36,000 --> 00:04:37,000
+How will you do that?
+
+122
+00:04:37,000 --> 00:04:38,000
+See there are two ways of doing it:
+
+123
+00:04:38,000 --> 00:04:41,000
+one is the servlet way, and the second is the Spring way.
+
+124
+00:04:41,000 --> 00:04:43,000
+Let's start with the servlet way,
+
+125
+00:04:43,000 --> 00:04:44,000
+and then we'll move towards the Spring way.
+
+126
+00:04:44,000 --> 00:04:48,000
+In servlet, if you want to accept the data from a client,
+
+127
+00:04:48,000 --> 00:04:51,000
+we have to use something called HttpServletRequest.
+
+128
+00:04:51,000 --> 00:04:53,000
+We have done that before as well, right?
+
+129
+00:04:53,000 --> 00:04:57,000
+So in this bracket, I can simply say HttpServletRequest.
+
+130
+00:04:58,000 --> 00:04:59,000
+I can create the object,
+
+131
+00:04:59,000 --> 00:05:02,000
+or I can create a reference called req.
+
+132
+00:05:02,000 --> 00:05:03,000
+Now, the question arises,
+
+133
+00:05:03,000 --> 00:05:05,000
+who is responsible for giving this object?
+
+134
+00:05:05,000 --> 00:05:08,000
+Mind you, we are working on the Spring Framework.
+
+135
+00:05:08,000 --> 00:05:11,000
+So when you specify the HttpServletRequest here,
+
+136
+00:05:11,000 --> 00:05:13,000
+it is Spring's responsibility
+
+137
+00:05:13,000 --> 00:05:15,000
+to assign you the object for this.
+
+138
+00:05:15,000 --> 00:05:17,000
+You just say, "I want this request object."
+
+139
+00:05:17,000 --> 00:05:18,000
+Spring says, "Okay, done."
+
+140
+00:05:18,000 --> 00:05:20,000
+Now once you have this object, you can get the values.
+
+141
+00:05:20,000 --> 00:05:22,000
+How will you get the values?
+
+142
+00:05:22,000 --> 00:05:24,000
+You can say req.getParameter.
+
+143
+00:05:24,000 --> 00:05:25,000
+So that's the method you have to use
+
+144
+00:05:25,000 --> 00:05:27,000
+to get the value from the request object.
+
+145
+00:05:27,000 --> 00:05:28,000
+Because, see, anyway,
+
+146
+00:05:28,000 --> 00:05:30,000
+when a client sends a request to the server,
+
+147
+00:05:30,000 --> 00:05:31,000
+the request object will have all the data.
+
+148
+00:05:31,000 --> 00:05:33,000
+So we just have to fetch the data.
+
+149
+00:05:33,000 --> 00:05:34,000
+So you have to say getParameter.
+
+150
+00:05:34,000 --> 00:05:36,000
+But for which value?
+
+151
+00:05:36,000 --> 00:05:39,000
+In the browser, if you see, we have num1 and num2.
+
+152
+00:05:39,000 --> 00:05:41,000
+So we got two parameters.
+
+153
+00:05:41,000 --> 00:05:45,000
+I will say num1, but then this will be a type of String.
+
+154
+00:05:45,000 --> 00:05:47,000
+If you try to assign that to a variable.
+
+155
+00:05:47,000 --> 00:05:49,000
+So let's say you have int num1 here.
+
+156
+00:05:49,000 --> 00:05:51,000
+So of course, this will not work
+
+157
+00:05:51,000 --> 00:05:53,000
+because the getParameter returns a String.
+
+158
+00:05:53,000 --> 00:05:54,000
+So we have to basically convert this.
+
+159
+00:05:54,000 --> 00:05:57,000
+You have to parse it with the Integer.parseInt.
+
+160
+00:05:57,000 --> 00:05:58,000
+That's done.
+
+161
+00:05:58,000 --> 00:06:00,000
+And we need this for the second variable as well.
+
+162
+00:06:00,000 --> 00:06:02,000
+So I will just copy this, paste it here,
+
+163
+00:06:02,000 --> 00:06:04,000
+and this should be num2.
+
+164
+00:06:04,000 --> 00:06:05,000
+This should be num2.
+
+165
+00:06:05,000 --> 00:06:08,000
+Now, by doing this, we are getting the values,
+
+166
+00:06:08,000 --> 00:06:10,000
+and then we just have to add them.
+
+167
+00:06:10,000 --> 00:06:14,000
+So I will say int result = num1 + num2.
+
+168
+00:06:14,000 --> 00:06:16,000
+Again, the logic can be anything, right?
+
+169
+00:06:16,000 --> 00:06:17,000
+So whatever logic you have,
+
+170
+00:06:17,000 --> 00:06:19,000
+you can write inside this method,
+
+171
+00:06:19,000 --> 00:06:21,000
+and that's what we're doing here.
+
+172
+00:06:21,000 --> 00:06:23,000
+Once you've got this value, your job is done, right?
+
+173
+00:06:23,000 --> 00:06:26,000
+You got the values, you are adding them.
+
+174
+00:06:26,000 --> 00:06:29,000
+At this point, I will just print the result in the console.
+
+175
+00:06:29,000 --> 00:06:31,000
+So here, this is where I want to print it.
+
+176
+00:06:31,000 --> 00:06:32,000
+So I will just restart this
+
+177
+00:06:32,000 --> 00:06:35,000
+and see if I can actually get the values.
+
+178
+00:06:35,000 --> 00:06:37,000
+So I'll go back here and say "Submit."
+
+179
+00:06:37,000 --> 00:06:40,000
+Okay, it says "Result is," but we are not printing it here;
+
+180
+00:06:40,000 --> 00:06:41,000
+we are printing it on the console.
+
+181
+00:06:41,000 --> 00:06:42,000
+And the console says 13.
+
+182
+00:06:42,000 --> 00:06:44,000
+So 6 + 7 = 13, and it's working.
+
+183
+00:06:44,000 --> 00:06:46,000
+But then I don't want to print on the console, right?
+
+184
+00:06:46,000 --> 00:06:48,000
+I want to print it on the page.
+
+185
+00:06:48,000 --> 00:06:49,000
+How will you do that?
+
+186
+00:06:49,000 --> 00:06:51,000
+Let's see that in the next video.
+
diff --git a/12 - Spring  Boot Web/012 Source-Code.url b/12 - Spring  Boot Web/012 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..d9fad9771d431541cb960c3964fbabe06c1fdc6f
--- /dev/null
+++ b/12 - Spring  Boot Web/012 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.12%20Accepting%20Data%20the%20servlet%20way
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/013 Display Data on Result Page_en.srt b/12 - Spring  Boot Web/013 Display Data on Result Page_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..4eff8f9d6c7ecd98b3b8734302b943bfe92405a2
--- /dev/null
+++ b/12 - Spring  Boot Web/013 Display Data on Result Page_en.srt	
@@ -0,0 +1,540 @@
+1
+00:00:00,000 --> 00:00:02,000
+(upbeat music)
+
+2
+00:00:02,000 --> 00:00:06,000
+-: Okay, now we are printing the data on the console.
+
+3
+00:00:06,000 --> 00:00:09,000
+We don't do that, we want to print this on the result page.
+
+4
+00:00:09,000 --> 00:00:11,000
+To do that, first of all,
+
+5
+00:00:11,000 --> 00:00:13,000
+we have to send this data to the result page.
+
+6
+00:00:13,000 --> 00:00:15,000
+How will you do that, see, there are multiple ways
+
+7
+00:00:15,000 --> 00:00:17,000
+of sending this data to the result page.
+
+8
+00:00:17,000 --> 00:00:19,000
+Of course, you cannot simply expect
+
+9
+00:00:19,000 --> 00:00:22,000
+that this data will be available in this page.
+
+10
+00:00:22,000 --> 00:00:24,000
+You have to send it, there are multiple ways
+
+11
+00:00:24,000 --> 00:00:26,000
+you can basically pass through the URL.
+
+12
+00:00:26,000 --> 00:00:28,000
+You can put a question mark here
+
+13
+00:00:28,000 --> 00:00:30,000
+and you can say the result is this,
+
+14
+00:00:30,000 --> 00:00:33,000
+or you can use something called session.
+
+15
+00:00:33,000 --> 00:00:36,000
+So in servlet, basically we have a concept of session.
+
+16
+00:00:36,000 --> 00:00:38,000
+I mean when I say servlet, it is also applicable for spring
+
+17
+00:00:38,000 --> 00:00:41,000
+because behind the scene everything is servlet.
+
+18
+00:00:41,000 --> 00:00:46,000
+So we have to put the data in a session object.
+
+19
+00:00:46,000 --> 00:00:48,000
+Now what your session, so basically when you have multiple
+
+20
+00:00:48,000 --> 00:00:51,000
+pages and if a user is accessing multiple pages,
+
+21
+00:00:51,000 --> 00:00:55,000
+you want to maintain this data between the pages.
+
+22
+00:00:55,000 --> 00:00:57,000
+And the way you can do that is with the help of session
+
+23
+00:00:57,000 --> 00:00:59,000
+and to get the hold on a session,
+
+24
+00:00:59,000 --> 00:01:01,000
+what you can do is you can just
+
+25
+00:01:01,000 --> 00:01:03,000
+pass this session object here.
+
+26
+00:01:03,000 --> 00:01:05,000
+So you can create a HttpSession.
+
+27
+00:01:07,000 --> 00:01:10,000
+Now we just specify, so this is an interface.
+
+28
+00:01:10,000 --> 00:01:12,000
+If you click on HttpSession, this is an interface
+
+29
+00:01:12,000 --> 00:01:14,000
+and we are creating a reference for it.
+
+30
+00:01:14,000 --> 00:01:17,000
+Now who is responsible to inject the object?
+
+31
+00:01:17,000 --> 00:01:18,000
+You know it, spring framework.
+
+32
+00:01:18,000 --> 00:01:22,000
+Now with the object, I just have to add this data,
+
+33
+00:01:22,000 --> 00:01:25,000
+visual data in the session.
+
+34
+00:01:25,000 --> 00:01:28,000
+So the way you can do that is by saying session dot.
+
+35
+00:01:28,000 --> 00:01:31,000
+So it has a method called set attribute.
+
+36
+00:01:31,000 --> 00:01:32,000
+And in this you have to pass two things.
+
+37
+00:01:32,000 --> 00:01:35,000
+The name of a variable or name of the data, which result,
+
+38
+00:01:35,000 --> 00:01:38,000
+and the actual data which is result.
+
+39
+00:01:38,000 --> 00:01:40,000
+So basically you have to do, you have to pass two things.
+
+40
+00:01:40,000 --> 00:01:43,000
+One is the name and second is the data.
+
+41
+00:01:43,000 --> 00:01:46,000
+So name is result and the data is result,
+
+42
+00:01:46,000 --> 00:01:47,000
+which is the value in this case.
+
+43
+00:01:47,000 --> 00:01:51,000
+And that's it, so when you call result JSP,
+
+44
+00:01:51,000 --> 00:01:52,000
+and see we talked about it, right?
+
+45
+00:01:52,000 --> 00:01:56,000
+So when you call add, the dispatcher is calling result JSP.
+
+46
+00:01:56,000 --> 00:01:58,000
+So that means that there's two different pages.
+
+47
+00:01:58,000 --> 00:02:00,000
+So we have to maintain this data.
+
+48
+00:02:00,000 --> 00:02:03,000
+The way we can do that is with help of session.
+
+49
+00:02:03,000 --> 00:02:06,000
+So we are adding this data in the session object.
+
+50
+00:02:06,000 --> 00:02:09,000
+Okay, we have done that right now, we have added it.
+
+51
+00:02:09,000 --> 00:02:11,000
+How will you get this data in the result page?
+
+52
+00:02:11,000 --> 00:02:14,000
+Now that's tricky, so what you can do is here,
+
+53
+00:02:14,000 --> 00:02:17,000
+you can print, in fact you can print it here itself.
+
+54
+00:02:17,000 --> 00:02:21,000
+You can print the data, you can simply say result,
+
+55
+00:02:21,000 --> 00:02:22,000
+but will it work?
+
+56
+00:02:22,000 --> 00:02:24,000
+Of course not, right, this look like a normal text.
+
+57
+00:02:24,000 --> 00:02:28,000
+How will your JSP knows that this is not a simple text.
+
+58
+00:02:28,000 --> 00:02:30,000
+This is actually a variable.
+
+59
+00:02:30,000 --> 00:02:33,000
+And to do that we have to make sure that we put
+
+60
+00:02:33,000 --> 00:02:36,000
+that into JSP code.
+
+61
+00:02:36,000 --> 00:02:39,000
+So whenever you want to write a Java code inside JSP,
+
+62
+00:02:39,000 --> 00:02:40,000
+you have to open the angular bracket.
+
+63
+00:02:40,000 --> 00:02:42,000
+Then percentage, then percentage, angular bracket.
+
+64
+00:02:42,000 --> 00:02:43,000
+This is how we write the Java code.
+
+65
+00:02:43,000 --> 00:02:46,000
+Now in between you can write whatever code you want
+
+66
+00:02:46,000 --> 00:02:48,000
+and we don't want any code.
+
+67
+00:02:48,000 --> 00:02:52,000
+What we want is we have to say session get attribute.
+
+68
+00:02:52,000 --> 00:02:54,000
+And in bracket you have to mention the name
+
+69
+00:02:54,000 --> 00:02:55,000
+of a variable which is result here.
+
+70
+00:02:55,000 --> 00:02:57,000
+So we have to say session get attribute
+
+71
+00:02:57,000 --> 00:03:00,000
+and name of our variable
+
+72
+00:03:00,000 --> 00:03:02,000
+or the name of the data which result in this case.
+
+73
+00:03:02,000 --> 00:03:04,000
+Now the question arise, how will you get this session?
+
+74
+00:03:04,000 --> 00:03:05,000
+Object because in servlet
+
+75
+00:03:05,000 --> 00:03:08,000
+or here we are injecting the object right?
+
+76
+00:03:08,000 --> 00:03:10,000
+Now that's the beauty about JSP.
+
+77
+00:03:10,000 --> 00:03:12,000
+JSP gives you this object by default.
+
+78
+00:03:12,000 --> 00:03:14,000
+So you don't have to create this object.
+
+79
+00:03:14,000 --> 00:03:16,000
+JSP says, session is yours, request is yours.
+
+80
+00:03:16,000 --> 00:03:19,000
+You just use the object, it's available behind the scene.
+
+81
+00:03:19,000 --> 00:03:21,000
+So we got a session object, we are saying get attribute
+
+82
+00:03:21,000 --> 00:03:25,000
+and we are printing or we are getting the data of result.
+
+83
+00:03:25,000 --> 00:03:27,000
+And that's what you're going to display on the page.
+
+84
+00:03:27,000 --> 00:03:30,000
+And now let's see if this works, let's read on this.
+
+85
+00:03:30,000 --> 00:03:31,000
+Go back to your browser
+
+86
+00:03:31,000 --> 00:03:33,000
+and I will just refresh this
+
+87
+00:03:33,000 --> 00:03:38,000
+with a different value this time, let's say 7 and 88.
+
+88
+00:03:38,000 --> 00:03:41,000
+Let's click on submit and we got an error.
+
+89
+00:03:41,000 --> 00:03:44,000
+The error is internal servlet error 500.
+
+90
+00:03:44,000 --> 00:03:49,000
+Let's see what happened here, and I love errors.
+
+91
+00:03:49,000 --> 00:03:50,000
+Okay, one thing I forgot.
+
+92
+00:03:50,000 --> 00:03:53,000
+It's just that when you, I mean you can write the code here,
+
+93
+00:03:53,000 --> 00:03:55,000
+but then when you want the value of it,
+
+94
+00:03:55,000 --> 00:03:56,000
+you have to put the equal to as well
+
+95
+00:03:56,000 --> 00:03:58,000
+because we directly want to get this value
+
+96
+00:03:58,000 --> 00:04:00,000
+and print it on the page.
+
+97
+00:04:00,000 --> 00:04:03,000
+I forgot to put the equal to symbol
+
+98
+00:04:05,000 --> 00:04:07,000
+now I hope it'll work.
+
+99
+00:04:07,000 --> 00:04:12,000
+Let's go back to the browser, say refresh.
+
+100
+00:04:12,000 --> 00:04:14,000
+And you can see we got the value, which is 95.
+
+101
+00:04:14,000 --> 00:04:16,000
+So that's how basically you can get the value, okay?
+
+102
+00:04:16,000 --> 00:04:18,000
+So we can use a session object to get the value.
+
+103
+00:04:18,000 --> 00:04:20,000
+There's one way, there's another way
+
+104
+00:04:20,000 --> 00:04:22,000
+where you can use the JSTL way.
+
+105
+00:04:22,000 --> 00:04:25,000
+JSTL is basically a JSP standard library
+
+106
+00:04:25,000 --> 00:04:27,000
+or template library, which allows you
+
+107
+00:04:27,000 --> 00:04:30,000
+to directly use some certain tags,
+
+108
+00:04:30,000 --> 00:04:31,000
+which you can get the value.
+
+109
+00:04:31,000 --> 00:04:34,000
+So we can just put the currently packets here
+
+110
+00:04:34,000 --> 00:04:35,000
+and we can remove everything.
+
+111
+00:04:35,000 --> 00:04:37,000
+And you can simply put result.
+
+112
+00:04:37,000 --> 00:04:38,000
+So it'll directly use,
+
+113
+00:04:38,000 --> 00:04:41,000
+it'll directly search this session object,
+
+114
+00:04:41,000 --> 00:04:42,000
+request object to get your data.
+
+115
+00:04:42,000 --> 00:04:44,000
+And if you have, it'll directly fetch it.
+
+116
+00:04:44,000 --> 00:04:47,000
+The only thing is you have to put the dollar symbol as well
+
+117
+00:04:47,000 --> 00:04:50,000
+by specifying, hey, this is not a normal curly packet,
+
+118
+00:04:50,000 --> 00:04:51,000
+this is a JSTL.
+
+119
+00:04:51,000 --> 00:04:54,000
+So you have to use the dollar symbol and the current package
+
+120
+00:04:54,000 --> 00:04:55,000
+and then you have to set result.
+
+121
+00:04:55,000 --> 00:04:59,000
+Now if you run this, let's see if it is changing something,
+
+122
+00:04:59,000 --> 00:05:02,000
+let's refresh the servlet is not started yet.
+
+123
+00:05:02,000 --> 00:05:04,000
+Refresh and it works.
+
+124
+00:05:04,000 --> 00:05:07,000
+So basically you have both the ways you can use the normal
+
+125
+00:05:07,000 --> 00:05:11,000
+JSP syntax or you can use the JSTL.
+
+126
+00:05:11,000 --> 00:05:13,000
+But this is how basically you can pass the value
+
+127
+00:05:13,000 --> 00:05:16,000
+between the JSP or between the servlets.
+
+128
+00:05:16,000 --> 00:05:20,000
+Because ultimately JSP will get converted into servlets.
+
+129
+00:05:20,000 --> 00:05:22,000
+But one thing here, I mean this works,
+
+130
+00:05:22,000 --> 00:05:23,000
+but it doesn't look good.
+
+131
+00:05:23,000 --> 00:05:26,000
+We are working on spring framework, right?
+
+132
+00:05:26,000 --> 00:05:29,000
+This is okay, but can you just simplify this?
+
+133
+00:05:29,000 --> 00:05:32,000
+And that's the beauty about spring, right?
+
+134
+00:05:32,000 --> 00:05:34,000
+Can we simplify this code, of course we can.
+
+135
+00:05:34,000 --> 00:05:37,000
+And let's see that in the next video.
+
diff --git a/12 - Spring  Boot Web/013 Source-Code.url b/12 - Spring  Boot Web/013 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..06abafdcbc22d8588405bb1dad6a03f0e3bde8d0
--- /dev/null
+++ b/12 - Spring  Boot Web/013 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.13%20Display%20Data%20on%20Result%20Page
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/014 RequestParam_en.srt b/12 - Spring  Boot Web/014 RequestParam_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..f263bd1788536ab3de75c6e81b5da9a6c2abebdf
--- /dev/null
+++ b/12 - Spring  Boot Web/014 RequestParam_en.srt	
@@ -0,0 +1,428 @@
+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: So let's simplify this particular code here.
+
+3
+00:00:06,000 --> 00:00:07,000
+Now, as I mentioned before,
+
+4
+00:00:07,000 --> 00:00:10,000
+this is a sublet way of doing things, right?
+
+5
+00:00:10,000 --> 00:00:12,000
+Where you have to handle the request,
+
+6
+00:00:12,000 --> 00:00:13,000
+you have to create a sessional object,
+
+7
+00:00:13,000 --> 00:00:16,000
+but now in spring it'll make it bit easy.
+
+8
+00:00:16,000 --> 00:00:20,000
+How? See if we talk about this ad, which is a path, right?
+
+9
+00:00:20,000 --> 00:00:23,000
+So in the browser you can see it says there's an ad request
+
+10
+00:00:23,000 --> 00:00:28,000
+and then you are sending this two data in the URL itself.
+
+11
+00:00:28,000 --> 00:00:31,000
+So when you're sending this data here as a query parameter,
+
+12
+00:00:31,000 --> 00:00:33,000
+what we can also do is instead
+
+13
+00:00:33,000 --> 00:00:36,000
+of using this request object, we can delete this.
+
+14
+00:00:36,000 --> 00:00:40,000
+What if you can just take those two values in two variables?
+
+15
+00:00:40,000 --> 00:00:42,000
+Something like this,
+
+16
+00:00:42,000 --> 00:00:46,000
+You can simply say, int num1, int num2.
+
+17
+00:00:46,000 --> 00:00:49,000
+And what I'm expecting is it'll directly give
+
+18
+00:00:49,000 --> 00:00:51,000
+those values to these variables.
+
+19
+00:00:51,000 --> 00:00:53,000
+The question is, will it really work?
+
+20
+00:00:53,000 --> 00:00:55,000
+We'll do that in, we'll check that in some time,
+
+21
+00:00:55,000 --> 00:00:57,000
+but that also means that when you use
+
+22
+00:00:57,000 --> 00:00:59,000
+these two variables here,
+
+23
+00:00:59,000 --> 00:01:00,000
+then we don't have
+
+24
+00:01:00,000 --> 00:01:03,000
+to get the data like this from the request object.
+
+25
+00:01:03,000 --> 00:01:04,000
+Let's remember this.
+
+26
+00:01:04,000 --> 00:01:06,000
+So if we can get those data here,
+
+27
+00:01:06,000 --> 00:01:08,000
+we don't have to manually get the data, right?
+
+28
+00:01:08,000 --> 00:01:11,000
+We can simply say num1 + num2,
+
+29
+00:01:11,000 --> 00:01:13,000
+and then we can save that in result.
+
+30
+00:01:13,000 --> 00:01:15,000
+But will it work? Let's try.
+
+31
+00:01:15,000 --> 00:01:17,000
+So let me relaunch this application,
+
+32
+00:01:17,000 --> 00:01:19,000
+okay, application restarted.
+
+33
+00:01:19,000 --> 00:01:21,000
+Let's go back to the browser
+
+34
+00:01:21,000 --> 00:01:25,000
+and, okay, now this page, I want to go for the homepage
+
+35
+00:01:25,000 --> 00:01:26,000
+and here let me enter to values.
+
+36
+00:01:26,000 --> 00:01:28,000
+I will say 7 + 8.
+
+37
+00:01:28,000 --> 00:01:31,000
+If I click on submit, it works.
+
+38
+00:01:31,000 --> 00:01:32,000
+I mean that's weird, right?
+
+39
+00:01:32,000 --> 00:01:34,000
+Is this code really working?
+
+40
+00:01:34,000 --> 00:01:37,000
+What I would also do is let me just add a extra number here
+
+41
+00:01:37,000 --> 00:01:39,000
+just to verify.
+
+42
+00:01:39,000 --> 00:01:41,000
+If it works, then of course, right?
+
+43
+00:01:41,000 --> 00:01:44,000
+This is much better than the earlier code.
+
+44
+00:01:44,000 --> 00:01:46,000
+Let's go back, submit, and you can see we got 16.
+
+45
+00:01:46,000 --> 00:01:48,000
+So yes, this is working.
+
+46
+00:01:48,000 --> 00:01:49,000
+Now how it is working.
+
+47
+00:01:49,000 --> 00:01:52,000
+So what happens is when you send a request
+
+48
+00:01:52,000 --> 00:01:53,000
+for the ad method
+
+49
+00:01:53,000 --> 00:01:56,000
+and you're passing your those two query parameters
+
+50
+00:01:56,000 --> 00:02:00,000
+with the same name, they got the name num1 and num2,
+
+51
+00:02:00,000 --> 00:02:01,000
+and that's why it is working.
+
+52
+00:02:01,000 --> 00:02:03,000
+There is also one thing you can...
+
+53
+00:02:03,000 --> 00:02:05,000
+What if you want to have a different variable name.
+
+54
+00:02:05,000 --> 00:02:07,000
+Let's say you don't have num1 here we just have num.
+
+55
+00:02:07,000 --> 00:02:10,000
+And here also I'm using num, I'm not using num1 now.
+
+56
+00:02:10,000 --> 00:02:12,000
+Will this work with a different name?
+
+57
+00:02:12,000 --> 00:02:15,000
+Let's try and go back here, say refresh
+
+58
+00:02:15,000 --> 00:02:19,000
+and let's hit it with different values and say submit.
+
+59
+00:02:19,000 --> 00:02:22,000
+Okay, so you can see we got an error, which is 500.
+
+60
+00:02:22,000 --> 00:02:24,000
+Reason for this is it is not able
+
+61
+00:02:24,000 --> 00:02:26,000
+to match the variable name.
+
+62
+00:02:26,000 --> 00:02:29,000
+Let me just search for the reason.
+
+63
+00:02:29,000 --> 00:02:32,000
+It says optional int parameter num is present
+
+64
+00:02:32,000 --> 00:02:34,000
+but cannot be translated into a null value.
+
+65
+00:02:34,000 --> 00:02:36,000
+Okay, so this is optional, right?
+
+66
+00:02:36,000 --> 00:02:38,000
+Which is we are getting off this variable
+
+67
+00:02:38,000 --> 00:02:41,000
+and it's not matching with the data which we are sending.
+
+68
+00:02:41,000 --> 00:02:43,000
+So this by default it is null.
+
+69
+00:02:43,000 --> 00:02:45,000
+So we have to make sure it is num1.
+
+70
+00:02:45,000 --> 00:02:47,000
+But what if you don't want to give num1 there?
+
+71
+00:02:47,000 --> 00:02:49,000
+So in that case you can use
+
+72
+00:02:49,000 --> 00:02:52,000
+a annotation called RequestParam.
+
+73
+00:02:53,000 --> 00:02:56,000
+And in this bracket you can mention the actual variable
+
+74
+00:02:56,000 --> 00:02:59,000
+or actual name which is coming from the browser.
+
+75
+00:02:59,000 --> 00:03:01,000
+So in the URL, we are sending num1.
+
+76
+00:03:01,000 --> 00:03:03,000
+So what we are saying is
+
+77
+00:03:03,000 --> 00:03:05,000
+whatever data you are getting in num1,
+
+78
+00:03:05,000 --> 00:03:08,000
+just assign to that variable called num
+
+79
+00:03:08,000 --> 00:03:09,000
+and that's how you can do it.
+
+80
+00:03:09,000 --> 00:03:12,000
+So again, it is optional if you have a same variable name,
+
+81
+00:03:12,000 --> 00:03:14,000
+but it's better to write it
+
+82
+00:03:14,000 --> 00:03:16,000
+so it go back to the same variable.
+
+83
+00:03:16,000 --> 00:03:19,000
+And same you can apply here.
+
+84
+00:03:19,000 --> 00:03:21,000
+So we can say request, not request mapping.
+
+85
+00:03:21,000 --> 00:03:22,000
+RequestParam.
+
+86
+00:03:27,000 --> 00:03:29,000
+And here we can say this is for num2.
+
+87
+00:03:30,000 --> 00:03:32,000
+And even if you say they are same,
+
+88
+00:03:32,000 --> 00:03:34,000
+you can skip this name here
+
+89
+00:03:34,000 --> 00:03:37,000
+and you can keep it just RequestParam and that works.
+
+90
+00:03:37,000 --> 00:03:40,000
+So basically if you can directly get the value from the URL,
+
+91
+00:03:40,000 --> 00:03:44,000
+you don't have to use the CDP server request object.
+
+92
+00:03:44,000 --> 00:03:46,000
+And that's how basically you work with Param.
+
+93
+00:03:46,000 --> 00:03:48,000
+Let's again, for the last time,
+
+94
+00:03:48,000 --> 00:03:50,000
+let's run this for this particular video.
+
+95
+00:03:50,000 --> 00:03:52,000
+So let's go back to the browser.
+
+96
+00:03:52,000 --> 00:03:56,000
+Let's refresh this, of course with different values
+
+97
+00:03:56,000 --> 00:03:58,000
+and it works, okay?
+
+98
+00:03:58,000 --> 00:04:00,000
+So if we got this extra one
+
+99
+00:04:00,000 --> 00:04:02,000
+because of this extra edition we are doing,
+
+100
+00:04:02,000 --> 00:04:04,000
+but yeah, that's how you basically use RequestParam
+
+101
+00:04:04,000 --> 00:04:08,000
+so that you can simplify your code much more.
+
+102
+00:04:08,000 --> 00:04:09,000
+Now what else?
+
+103
+00:04:09,000 --> 00:04:12,000
+See we have removed the CDP request object, right?
+
+104
+00:04:12,000 --> 00:04:14,000
+Or the CDP server request object.
+
+105
+00:04:14,000 --> 00:04:15,000
+How about this sessional object?
+
+106
+00:04:15,000 --> 00:04:17,000
+I don't want to work with sessional object.
+
+107
+00:04:17,000 --> 00:04:21,000
+How can we remove that? So let's see that in the next video.
+
diff --git a/12 - Spring  Boot Web/014 Source-Code.url b/12 - Spring  Boot Web/014 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..599f906141990cdba47f9b70a216955c0e655ce0
--- /dev/null
+++ b/12 - Spring  Boot Web/014 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.14%20RequestParam
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/015 Model Object_en.srt b/12 - Spring  Boot Web/015 Model Object_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..5f6b4f0a05eb95c4540aaeef2dc9dabb211ebfcf
--- /dev/null
+++ b/12 - Spring  Boot Web/015 Model Object_en.srt	
@@ -0,0 +1,396 @@
+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:04,000
+-: So now it's time to get rid
+
+3
+00:00:04,000 --> 00:00:07,000
+of this HTTP session object here.
+
+4
+00:00:07,000 --> 00:00:08,000
+So before we do that, let's verify
+
+5
+00:00:08,000 --> 00:00:10,000
+what we are doing in results.
+
+6
+00:00:10,000 --> 00:00:13,000
+So basically here we are printing the result is,
+
+7
+00:00:13,000 --> 00:00:15,000
+and then we have used JSTL here just
+
+8
+00:00:15,000 --> 00:00:18,000
+to fetch the value of that particular data,
+
+9
+00:00:18,000 --> 00:00:20,000
+which is result in this case.
+
+10
+00:00:20,000 --> 00:00:22,000
+So when we talked about MVC, we had a model view controller,
+
+11
+00:00:22,000 --> 00:00:24,000
+right, where controller is responsible
+
+12
+00:00:24,000 --> 00:00:26,000
+to accept the user request, right?
+
+13
+00:00:26,000 --> 00:00:28,000
+So we've got a controller here
+
+14
+00:00:28,000 --> 00:00:31,000
+and then we have a view which is going to decline.
+
+15
+00:00:31,000 --> 00:00:33,000
+So we have talked about the controller and the view.
+
+16
+00:00:33,000 --> 00:00:35,000
+What about that data?
+
+17
+00:00:35,000 --> 00:00:37,000
+Remember we have talked about how do you transfer data
+
+18
+00:00:37,000 --> 00:00:41,000
+between the controller and the view?
+
+19
+00:00:41,000 --> 00:00:43,000
+So basically we have to use an object
+
+20
+00:00:43,000 --> 00:00:45,000
+and that is your model object.
+
+21
+00:00:45,000 --> 00:00:46,000
+And we are not using it here.
+
+22
+00:00:46,000 --> 00:00:48,000
+So instead of using session, I want to use
+
+23
+00:00:48,000 --> 00:00:51,000
+that model object and how do we use that?
+
+24
+00:00:51,000 --> 00:00:53,000
+As the name suggest, we can simply say, model,
+
+25
+00:00:53,000 --> 00:00:57,000
+let's input the package for this and say model.
+
+26
+00:00:57,000 --> 00:00:59,000
+That's it. You just get this model.
+
+27
+00:00:59,000 --> 00:01:02,000
+And now with this model object, instead
+
+28
+00:01:02,000 --> 00:01:04,000
+of using session, let me delete that.
+
+29
+00:01:04,000 --> 00:01:07,000
+I can simply say model.addAttribute.
+
+30
+00:01:08,000 --> 00:01:10,000
+So instead of said attribute, we have add attribute
+
+31
+00:01:10,000 --> 00:01:13,000
+because we can add multiple attributes, not just one.
+
+32
+00:01:13,000 --> 00:01:15,000
+And then we can give a name
+
+33
+00:01:15,000 --> 00:01:16,000
+the same way we have done before.
+
+34
+00:01:16,000 --> 00:01:19,000
+We can say result and we can say result.
+
+35
+00:01:19,000 --> 00:01:21,000
+Okay, and what is this model?
+
+36
+00:01:21,000 --> 00:01:23,000
+So basically model is interface,
+
+37
+00:01:23,000 --> 00:01:27,000
+which was introduced in 2.5 version of Spring.
+
+38
+00:01:27,000 --> 00:01:32,000
+It is basically used to transfer data between the things.
+
+39
+00:01:32,000 --> 00:01:35,000
+I just want to make sure I've imported the right package.
+
+40
+00:01:35,000 --> 00:01:37,000
+Yeah, so if you want to transfer between controller
+
+41
+00:01:37,000 --> 00:01:40,000
+and the JSP, we have to use something called model here.
+
+42
+00:01:40,000 --> 00:01:43,000
+Now, once we've got model, we just have to add attribute,
+
+43
+00:01:43,000 --> 00:01:45,000
+and let's see if this works.
+
+44
+00:01:45,000 --> 00:01:46,000
+Let's restart the application.
+
+45
+00:01:46,000 --> 00:01:47,000
+So now we are not using a HTTP session.
+
+46
+00:01:47,000 --> 00:01:50,000
+We are basically using a model.
+
+47
+00:01:50,000 --> 00:01:55,000
+And if you go back to your browser, let's go back here,
+
+48
+00:01:55,000 --> 00:01:56,000
+refresh
+
+49
+00:01:57,000 --> 00:02:02,000
+and say some big number, enter, and you've got the output.
+
+50
+00:02:02,000 --> 00:02:05,000
+Doesn't matter what the output is, but we got the output.
+
+51
+00:02:05,000 --> 00:02:08,000
+So that's how basically your model object works.
+
+52
+00:02:08,000 --> 00:02:09,000
+So instead of using SGP session, we are using model now.
+
+53
+00:02:12,000 --> 00:02:16,000
+Okay, so we have get, we got rid of the the request object.
+
+54
+00:02:16,000 --> 00:02:18,000
+We got rid of the HTTP session.
+
+55
+00:02:18,000 --> 00:02:20,000
+Now, this is how basically you build
+
+56
+00:02:21,000 --> 00:02:22,000
+application using spring NVC or spring.
+
+57
+00:02:22,000 --> 00:02:24,000
+Spring Boot.
+
+58
+00:02:24,000 --> 00:02:27,000
+You can say, okay, but also I want to change one more thing.
+
+59
+00:02:27,000 --> 00:02:28,000
+I know you'll be saying,
+
+60
+00:02:28,000 --> 00:02:30,000
+Hey, how many things you're changing?
+
+61
+00:02:30,000 --> 00:02:33,000
+Okay, let, let me do one last, I hope.
+
+62
+00:02:33,000 --> 00:02:35,000
+I just want
+
+63
+00:02:35,000 --> 00:02:36,000
+to get rid of this JSP page.
+
+64
+00:02:36,000 --> 00:02:39,000
+I mean not JSP page, but .JSP. I mean, think about this.
+
+65
+00:02:39,000 --> 00:02:41,000
+Remember when we talked about MVC, I said
+
+66
+00:02:41,000 --> 00:02:44,000
+for the view we have multiple options.
+
+67
+00:02:44,000 --> 00:02:49,000
+We got JSP, we got free marker, we got theme leaf.
+
+68
+00:02:49,000 --> 00:02:50,000
+So we have so many options, right?
+
+69
+00:02:50,000 --> 00:02:55,000
+And let's say one day I decided to move from let's say, JSP
+
+70
+00:02:55,000 --> 00:02:56,000
+to theme leaf.
+
+71
+00:02:56,000 --> 00:03:00,000
+In that case you will have to go to each controller
+
+72
+00:03:00,000 --> 00:03:02,000
+and check where, where are we using this
+
+73
+00:03:02,000 --> 00:03:04,000
+dot JSP extension.
+
+74
+00:03:04,000 --> 00:03:07,000
+So if you can get rid of this, will it still work?
+
+75
+00:03:07,000 --> 00:03:10,000
+Of course, we have to change both the side.
+
+76
+00:03:10,000 --> 00:03:13,000
+Nowhere. I want to mention the extension.
+
+77
+00:03:13,000 --> 00:03:14,000
+That's one.
+
+78
+00:03:14,000 --> 00:03:18,000
+Next, maybe I want to keep my files,
+
+79
+00:03:18,000 --> 00:03:21,000
+the web files, not in the web app folder,
+
+80
+00:03:21,000 --> 00:03:22,000
+but it's, but somewhere else.
+
+81
+00:03:22,000 --> 00:03:24,000
+Maybe I, I have a new view folder here.
+
+82
+00:03:24,000 --> 00:03:25,000
+So I will just right click here
+
+83
+00:03:25,000 --> 00:03:30,000
+and say I have a folder called views
+
+84
+00:03:30,000 --> 00:03:33,000
+and I want to move this things
+
+85
+00:03:34,000 --> 00:03:35,000
+inside this.
+
+86
+00:03:36,000 --> 00:03:37,000
+Now question arise.
+
+87
+00:03:37,000 --> 00:03:39,000
+After making these changes, will it work?
+
+88
+00:03:39,000 --> 00:03:40,000
+Let's try.
+
+89
+00:03:40,000 --> 00:03:42,000
+So I'll restart the application
+
+90
+00:03:42,000 --> 00:03:43,000
+and if I go back to the browser now,
+
+91
+00:03:43,000 --> 00:03:46,000
+let's say refresh the homepage.
+
+92
+00:03:46,000 --> 00:03:47,000
+And even the homepage,
+
+93
+00:03:47,000 --> 00:03:49,000
+you can see the url, I'm calling the homepage.
+
+94
+00:03:49,000 --> 00:03:51,000
+It's not able to find the homepage.
+
+95
+00:03:51,000 --> 00:03:53,000
+Why? The homepage is there.
+
+96
+00:03:53,000 --> 00:03:55,000
+It's just that it in different folder plus
+
+97
+00:03:55,000 --> 00:03:58,000
+we are not even specifying the extension.
+
+98
+00:03:58,000 --> 00:04:01,000
+So how do we solve this problem?
+
+99
+00:04:01,000 --> 00:04:03,000
+Let's talk about that in the next video.
+
diff --git a/12 - Spring  Boot Web/015 Source-Code.url b/12 - Spring  Boot Web/015 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..6eb541e3cfb87555dcffc8bb5235ac7d9ab7ed74
--- /dev/null
+++ b/12 - Spring  Boot Web/015 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.15%20Model%20Object
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/016 Setting Prefix and Suffix_en.srt b/12 - Spring  Boot Web/016 Setting Prefix and Suffix_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..6e289d0e2e988dc67dca91e20360098e46743207
--- /dev/null
+++ b/12 - Spring  Boot Web/016 Setting Prefix and Suffix_en.srt	
@@ -0,0 +1,340 @@
+1
+00:00:00,000 --> 00:00:03,000
+(light music)
+
+2
+00:00:03,000 --> 00:00:04,000
+-: Okay, so let's solve this problem.
+
+3
+00:00:04,000 --> 00:00:07,000
+So basically now, our views, which are the jsp files,
+
+4
+00:00:07,000 --> 00:00:09,000
+are in other folder.
+
+5
+00:00:09,000 --> 00:00:12,000
+Additionally, we have changed the name of the view
+
+6
+00:00:12,000 --> 00:00:15,000
+directly with the name of the view, not with the extension.
+
+7
+00:00:15,000 --> 00:00:17,000
+So the question arise, how would you solve it?
+
+8
+00:00:17,000 --> 00:00:20,000
+The thing is, when you talk about your spring framework,
+
+9
+00:00:20,000 --> 00:00:23,000
+it also has a view resolver.
+
+10
+00:00:23,000 --> 00:00:24,000
+So basically, behind the scenes,
+
+11
+00:00:24,000 --> 00:00:27,000
+whenever you return a particular jsp file or something,
+
+12
+00:00:27,000 --> 00:00:29,000
+when you return a name here,
+
+13
+00:00:29,000 --> 00:00:31,000
+and if you see we are running a string,
+
+14
+00:00:31,000 --> 00:00:33,000
+so someone has to map it, right?
+
+15
+00:00:33,000 --> 00:00:36,000
+So there's also a component which helps you to resolve this
+
+16
+00:00:36,000 --> 00:00:39,000
+and that is called a view resolver.
+
+17
+00:00:39,000 --> 00:00:42,000
+So when you say, "Hey, I'm returning result here."
+
+18
+00:00:42,000 --> 00:00:44,000
+Now view resolver has no idea,
+
+19
+00:00:44,000 --> 00:00:46,000
+first of all, where this file is,
+
+20
+00:00:46,000 --> 00:00:48,000
+and next what is the extension.
+
+21
+00:00:48,000 --> 00:00:50,000
+So we can talk to view resolver by saying,
+
+22
+00:00:50,000 --> 00:00:51,000
+"Hey, don't worry,
+
+23
+00:00:51,000 --> 00:00:53,000
+let me tell you where will you find it
+
+24
+00:00:53,000 --> 00:00:55,000
+and what is the extension."
+
+25
+00:00:55,000 --> 00:00:57,000
+And the way you can do that,
+
+26
+00:00:57,000 --> 00:00:58,000
+is with the help of a property file.
+
+27
+00:00:58,000 --> 00:01:00,000
+Of course, we are conferring something, right?
+
+28
+00:01:00,000 --> 00:01:03,000
+And when you configure your spring framework,
+
+29
+00:01:03,000 --> 00:01:05,000
+spring boot basically gives you this amazing file
+
+30
+00:01:05,000 --> 00:01:07,000
+called application of properties.
+
+31
+00:01:07,000 --> 00:01:10,000
+This is where you can mention the properties,
+
+32
+00:01:10,000 --> 00:01:12,000
+but we don't know which property, right?
+
+33
+00:01:12,000 --> 00:01:15,000
+So for that, again, you don't have to buy hard disk,
+
+34
+00:01:15,000 --> 00:01:16,000
+the moment, the more you work,
+
+35
+00:01:16,000 --> 00:01:19,000
+the more you will remember the property names.
+
+36
+00:01:19,000 --> 00:01:21,000
+But if you search for spring application properties,
+
+37
+00:01:21,000 --> 00:01:24,000
+the first link here, the common application properties,
+
+38
+00:01:24,000 --> 00:01:27,000
+if you go there, there are so many properties you can set
+
+39
+00:01:27,000 --> 00:01:29,000
+to configure your application, okay?
+
+40
+00:01:29,000 --> 00:01:30,000
+Don't get stressed with this.
+
+41
+00:01:30,000 --> 00:01:33,000
+It's not, we don't have to remember everything.
+
+42
+00:01:33,000 --> 00:01:36,000
+Few of them we will be using most of the time.
+
+43
+00:01:36,000 --> 00:01:38,000
+And even if you don't remember anything,
+
+44
+00:01:38,000 --> 00:01:39,000
+you can just Google it.
+
+45
+00:01:39,000 --> 00:01:40,000
+Stackoverflow is there.
+
+46
+00:01:40,000 --> 00:01:41,000
+AI is there.
+
+47
+00:01:41,000 --> 00:01:44,000
+AI tools are available, they will give you the exact name.
+
+48
+00:01:44,000 --> 00:01:45,000
+But here what I will do
+
+49
+00:01:45,000 --> 00:01:48,000
+is I will search for the MVC property.
+
+50
+00:01:48,000 --> 00:01:51,000
+And in this MVC, we have to set the location
+
+51
+00:01:51,000 --> 00:01:53,000
+and we have to set the extension, right?
+
+52
+00:01:53,000 --> 00:01:56,000
+So the location is your prefix.
+
+53
+00:01:56,000 --> 00:01:59,000
+So the name, result, so prefix is the views
+
+54
+00:01:59,000 --> 00:02:03,000
+and the postfix is the extension, which is .jsp, okay?
+
+55
+00:02:03,000 --> 00:02:05,000
+And then we can search
+
+56
+00:02:05,000 --> 00:02:08,000
+for something called prefix and postfix.
+
+57
+00:02:08,000 --> 00:02:10,000
+So if you can see, not prefix and postfix,
+
+58
+00:02:10,000 --> 00:02:12,000
+prefix and suffix.
+
+59
+00:02:12,000 --> 00:02:14,000
+These are the properties we have to mention, okay?
+
+60
+00:02:14,000 --> 00:02:16,000
+So example, if you set the prefix,
+
+61
+00:02:16,000 --> 00:02:18,000
+let me just copy this.
+
+62
+00:02:18,000 --> 00:02:22,000
+So prefix, you have to set slash, views, slash,
+
+63
+00:02:22,000 --> 00:02:24,000
+that's the folder name.
+
+64
+00:02:24,000 --> 00:02:26,000
+And then we have to set this suffix as well.
+
+65
+00:02:26,000 --> 00:02:29,000
+And this is your extension, which is .jsp, that's it.
+
+66
+00:02:29,000 --> 00:02:31,000
+This, you have to mention these two things.
+
+67
+00:02:31,000 --> 00:02:32,000
+So what we are doing is we are specifying the prefix
+
+68
+00:02:32,000 --> 00:02:36,000
+and we are specifying the suffix, which is the extension.
+
+69
+00:02:36,000 --> 00:02:38,000
+Let's restart the application now.
+
+70
+00:02:38,000 --> 00:02:39,000
+I hope this will work.
+
+71
+00:02:39,000 --> 00:02:41,000
+Let's go back to your browser.
+
+72
+00:02:41,000 --> 00:02:44,000
+This page, let me just close the property files.
+
+73
+00:02:44,000 --> 00:02:49,000
+And now, if I go to localhost:8080,
+
+74
+00:02:50,000 --> 00:02:52,000
+okay, it's not,
+
+75
+00:02:52,000 --> 00:02:54,000
+it's not running the CSS.
+
+76
+00:02:54,000 --> 00:02:56,000
+Let me reload my entire IntelliJ Idea.
+
+77
+00:02:56,000 --> 00:02:57,000
+Let's run this now.
+
+78
+00:02:57,000 --> 00:02:59,000
+Okay, go back to your browser, reload.
+
+79
+00:02:59,000 --> 00:03:02,000
+Okay, some issue with the CSS, we will resolve that later.
+
+80
+00:03:02,000 --> 00:03:04,000
+And let me just try the values.
+
+81
+00:03:04,000 --> 00:03:05,000
+Click on submit.
+
+82
+00:03:05,000 --> 00:03:06,000
+And you can see it worked.
+
+83
+00:03:06,000 --> 00:03:09,000
+We got result is 13.
+
+84
+00:03:09,000 --> 00:03:10,000
+So basically it was able to find the view,
+
+85
+00:03:10,000 --> 00:03:13,000
+it was able to find the JSP as well.
+
diff --git a/12 - Spring  Boot Web/016 Source-Code.url b/12 - Spring  Boot Web/016 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..032aa6e06be2823b44df0bfd21b7ed640fe7db61
--- /dev/null
+++ b/12 - Spring  Boot Web/016 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.16%20Setting%20Prefix%20and%20Suffix
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/017 ModelAndView_en.srt b/12 - Spring  Boot Web/017 ModelAndView_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..c925ce7e9743504b7aabac2ac8a3270859251b7b
--- /dev/null
+++ b/12 - Spring  Boot Web/017 ModelAndView_en.srt	
@@ -0,0 +1,456 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: Now in this video, we'll talk about ModelAndView.
+
+3
+00:00:06,000 --> 00:00:08,000
+So basically we have talked about Model before.
+
+4
+00:00:08,000 --> 00:00:11,000
+So if you want to pass data between the pages,
+
+5
+00:00:11,000 --> 00:00:13,000
+you can use a Model object.
+
+6
+00:00:13,000 --> 00:00:15,000
+So what we are doing till now is we got a Model object.
+
+7
+00:00:15,000 --> 00:00:17,000
+We are adding this data, which is "result",
+
+8
+00:00:17,000 --> 00:00:20,000
+and then this data is going to the .jsp page,
+
+9
+00:00:20,000 --> 00:00:21,000
+which you have mentioned here.
+
+10
+00:00:21,000 --> 00:00:23,000
+Okay, so before we talk about the ModelAndView,
+
+11
+00:00:23,000 --> 00:00:25,000
+because that View is important,
+
+12
+00:00:25,000 --> 00:00:27,000
+and the view is not working the way we want it.
+
+13
+00:00:27,000 --> 00:00:31,000
+So what I did is basically when I was moving the .jsp files,
+
+14
+00:00:31,000 --> 00:00:33,000
+I've also moved the .css file.
+
+15
+00:00:33,000 --> 00:00:35,000
+Now, .css is a public file, right?
+
+16
+00:00:35,000 --> 00:00:38,000
+Basically it is only for the styling purpose.
+
+17
+00:00:38,000 --> 00:00:42,000
+So you can put the .css file inside the webapp.
+
+18
+00:00:42,000 --> 00:00:43,000
+So, what?
+
+19
+00:00:43,000 --> 00:00:46,000
+You have to move a .jsp but not the static files.
+
+20
+00:00:46,000 --> 00:00:47,000
+So you can put the static files here
+
+21
+00:00:47,000 --> 00:00:51,000
+and then this should resolve the problem.
+
+22
+00:00:51,000 --> 00:00:53,000
+So let's go back to my browser
+
+23
+00:00:53,000 --> 00:00:55,000
+and you can see it I've refreshed.
+
+24
+00:00:55,000 --> 00:00:57,000
+And if I type two numbers,
+
+25
+00:00:57,000 --> 00:00:59,000
+now it is able to basically load this .css, right?
+
+26
+00:00:59,000 --> 00:01:01,000
+So that was the issue last time.
+
+27
+00:01:01,000 --> 00:01:06,000
+Also, you can also put this .css file in this static folder.
+
+28
+00:01:06,000 --> 00:01:09,000
+Now, static is a folder which you can see in the resources.
+
+29
+00:01:09,000 --> 00:01:10,000
+So we have a static folder, which will be there.
+
+30
+00:01:10,000 --> 00:01:13,000
+And if you want to put any static resources like images,
+
+31
+00:01:13,000 --> 00:01:16,000
+.css files, you can put that here.
+
+32
+00:01:16,000 --> 00:01:17,000
+Okay? So you have a choice.
+
+33
+00:01:17,000 --> 00:01:21,000
+You can either put that in the static file or in the webapp.
+
+34
+00:01:21,000 --> 00:01:23,000
+It makes sense to put that in static file
+
+35
+00:01:23,000 --> 00:01:26,000
+is because all the styling and static content
+
+36
+00:01:26,000 --> 00:01:28,000
+will be there in the static folder.
+
+37
+00:01:28,000 --> 00:01:30,000
+In the View, you will be having your .jsp.
+
+38
+00:01:30,000 --> 00:01:33,000
+It's more about structuring your project, right?
+
+39
+00:01:33,000 --> 00:01:36,000
+So if I refresh or restart the application once again,
+
+40
+00:01:36,000 --> 00:01:37,000
+let's see if that works.
+
+41
+00:01:37,000 --> 00:01:39,000
+Let's go back to the browser and refresh.
+
+42
+00:01:39,000 --> 00:01:40,000
+Okay, no problem.
+
+43
+00:01:40,000 --> 00:01:42,000
+You can see we are able to load the .css.
+
+44
+00:01:42,000 --> 00:01:44,000
+Okay, now let's talk about ModelAndView.
+
+45
+00:01:44,000 --> 00:01:47,000
+So when we talk about Model, it's only for data, right?
+
+46
+00:01:47,000 --> 00:01:50,000
+So we are using Model here to add the data
+
+47
+00:01:50,000 --> 00:01:54,000
+and also we are specifying a View name in the result.
+
+48
+00:01:54,000 --> 00:01:57,000
+What if you can put that review name in the object itself?
+
+49
+00:01:57,000 --> 00:02:00,000
+What I'm saying is, instead of using Model,
+
+50
+00:02:00,000 --> 00:02:01,000
+if you can use ModelAndView.
+
+51
+00:02:03,000 --> 00:02:04,000
+Which is this.
+
+52
+00:02:04,000 --> 00:02:06,000
+Instead of saying Model, I will say .mv.
+
+53
+00:02:06,000 --> 00:02:08,000
+.mv represents ModelAndView.
+
+54
+00:02:08,000 --> 00:02:12,000
+And with this ModelAndView object, I can add the attribute.
+
+55
+00:02:12,000 --> 00:02:14,000
+Okay, so we have a different name.
+
+56
+00:02:15,000 --> 00:02:18,000
+So I will say "addObject"
+
+57
+00:02:18,000 --> 00:02:21,000
+and then we can say the object is "result".
+
+58
+00:02:21,000 --> 00:02:23,000
+And then I can pass the data, which is "result",
+
+59
+00:02:23,000 --> 00:02:25,000
+that's done.
+
+60
+00:02:25,000 --> 00:02:28,000
+Okay, but then what about the return here?
+
+61
+00:02:28,000 --> 00:02:31,000
+So, of course we can still work with this, it will work.
+
+62
+00:02:31,000 --> 00:02:35,000
+But the best option is, instead of returning a name,
+
+63
+00:02:35,000 --> 00:02:36,000
+return the .mv object
+
+64
+00:02:36,000 --> 00:02:39,000
+because the ViewResolver will look at .mv object
+
+65
+00:02:39,000 --> 00:02:42,000
+and it will have two things: the data, as well as the View.
+
+66
+00:02:42,000 --> 00:02:44,000
+It makes much more sense now, right?
+
+67
+00:02:44,000 --> 00:02:46,000
+Because you are returning only one thing, not two.
+
+68
+00:02:46,000 --> 00:02:48,000
+Initially, you are returning the Model object
+
+69
+00:02:48,000 --> 00:02:50,000
+and also the View name.
+
+70
+00:02:50,000 --> 00:02:53,000
+But now we are returning only one object.
+
+71
+00:02:53,000 --> 00:02:54,000
+Now, since we are changing it here .mv,
+
+72
+00:02:54,000 --> 00:02:57,000
+we have to also make sure that you change it here
+
+73
+00:02:57,000 --> 00:03:02,000
+by saying we are returning a ModelAndView object
+
+74
+00:03:02,000 --> 00:03:02,000
+and that's done.
+
+75
+00:03:02,000 --> 00:03:05,000
+So okay, we got some angular bracket there.
+
+76
+00:03:05,000 --> 00:03:06,000
+And this should work.
+
+77
+00:03:06,000 --> 00:03:07,000
+Let's try.
+
+78
+00:03:07,000 --> 00:03:10,000
+Let's refresh this or restart the application.
+
+79
+00:03:10,000 --> 00:03:12,000
+Let's go back to our browser.
+
+80
+00:03:12,000 --> 00:03:14,000
+And if I refresh the page,
+
+81
+00:03:14,000 --> 00:03:16,000
+you can see there's no problem on the homepage.
+
+82
+00:03:16,000 --> 00:03:17,000
+But if I add the values,
+
+83
+00:03:17,000 --> 00:03:20,000
+and if I say submit, you can see we got an error,
+
+84
+00:03:20,000 --> 00:03:21,000
+which is 404.
+
+85
+00:03:21,000 --> 00:03:23,000
+So basically, it is not able to find the "result" page.
+
+86
+00:03:23,000 --> 00:03:24,000
+You know why?
+
+87
+00:03:24,000 --> 00:03:25,000
+Because nowhere,
+
+88
+00:03:25,000 --> 00:03:28,000
+we are saying that we have to call a "result" page.
+
+89
+00:03:28,000 --> 00:03:31,000
+So that means when you add the data,
+
+90
+00:03:31,000 --> 00:03:33,000
+you have to also set the ViewName.
+
+91
+00:03:34,000 --> 00:03:36,000
+So you have to mention the ViewName as "result".
+
+92
+00:03:36,000 --> 00:03:38,000
+Now it should work.
+
+93
+00:03:38,000 --> 00:03:41,000
+Let's restart the application and go back to the browser.
+
+94
+00:03:41,000 --> 00:03:43,000
+Let's go to the homepage first
+
+95
+00:03:45,000 --> 00:03:47,000
+and let's say 6 and 7.
+
+96
+00:03:47,000 --> 00:03:48,000
+Submit.
+
+97
+00:03:48,000 --> 00:03:49,000
+And you can see it works.
+
+98
+00:03:49,000 --> 00:03:51,000
+So basically you can use a Model object
+
+99
+00:03:51,000 --> 00:03:53,000
+if you just want to work with Data,
+
+100
+00:03:53,000 --> 00:03:55,000
+but if you want to return the ViewName as well,
+
+101
+00:03:55,000 --> 00:03:58,000
+ModelAndView makes much more sense.
+
+102
+00:03:58,000 --> 00:04:00,000
+So yeah, that's it about ModelAndView
+
+103
+00:04:00,000 --> 00:04:03,000
+where you can add the object and not just one object.
+
+104
+00:04:03,000 --> 00:04:05,000
+You can add multiple objects
+
+105
+00:04:05,000 --> 00:04:07,000
+and you can set the ViewName as well.
+
+106
+00:04:07,000 --> 00:04:09,000
+And this is how basically you build an application.
+
+107
+00:04:09,000 --> 00:04:12,000
+You can do the same thing here.
+
+108
+00:04:12,000 --> 00:04:13,000
+Instead of saying String,
+
+109
+00:04:13,000 --> 00:04:15,000
+we should also return ModelAndView here.
+
+110
+00:04:15,000 --> 00:04:17,000
+But again, that's something you can decide on,
+
+111
+00:04:17,000 --> 00:04:18,000
+which one to use.
+
+112
+00:04:18,000 --> 00:04:19,000
+But you have both the options.
+
+113
+00:04:19,000 --> 00:04:22,000
+You can use String or you can use,
+
+114
+00:04:22,000 --> 00:04:24,000
+you can return the ModelAndView object.
+
diff --git a/12 - Spring  Boot Web/017 Source-Code.url b/12 - Spring  Boot Web/017 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..19191239686b96e574ef4171e2a3355d2f947c06
--- /dev/null
+++ b/12 - Spring  Boot Web/017 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.17%20ModelAndView
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/018 Need for ModelAttribute_en.srt b/12 - Spring  Boot Web/018 Need for ModelAttribute_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..05ec260f4bec319407bdbd07e926d24e970242cb
--- /dev/null
+++ b/12 - Spring  Boot Web/018 Need for ModelAttribute_en.srt	
@@ -0,0 +1,748 @@
+1
+00:00:00,000 --> 00:00:03,000
+(upbeat music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: So we are happy with whatever we have learned till now.
+
+3
+00:00:06,000 --> 00:00:09,000
+Basically we have talked about model, object,
+
+4
+00:00:09,000 --> 00:00:10,000
+model and view.
+
+5
+00:00:10,000 --> 00:00:13,000
+There is one more called model attribute.
+
+6
+00:00:13,000 --> 00:00:16,000
+So let's understand why do we need a model attribute here.
+
+7
+00:00:16,000 --> 00:00:20,000
+So what I will do for that is I will go back to my index.jsp
+
+8
+00:00:20,000 --> 00:00:23,000
+and what we are doing here is to add two numbers.
+
+9
+00:00:23,000 --> 00:00:25,000
+Now basically if I go to my output page,
+
+10
+00:00:25,000 --> 00:00:26,000
+and if I go to the homepage,
+
+11
+00:00:26,000 --> 00:00:29,000
+basically you can see we are saying, "Hey, you know,
+
+12
+00:00:29,000 --> 00:00:31,000
+enter two numbers and we will add them".
+
+13
+00:00:31,000 --> 00:00:32,000
+And that's what we are doing.
+
+14
+00:00:32,000 --> 00:00:36,000
+But let's say you are not just want to add two numbers.
+
+15
+00:00:36,000 --> 00:00:39,000
+Let's maybe you want to send some data to the server so
+
+16
+00:00:39,000 --> 00:00:41,000
+that we can store that in database.
+
+17
+00:00:41,000 --> 00:00:43,000
+So now let's say you have an entity.
+
+18
+00:00:43,000 --> 00:00:46,000
+Now when you say entity, it means you are representing some
+
+19
+00:00:46,000 --> 00:00:50,000
+real life entities like laptop or a house or a office
+
+20
+00:00:50,000 --> 00:00:53,000
+or a factory or a mobile phone.
+
+21
+00:00:53,000 --> 00:00:55,000
+Now all this are entity, even humans.
+
+22
+00:00:55,000 --> 00:00:57,000
+When you say you are a student, you're a teacher,
+
+23
+00:00:57,000 --> 00:00:59,000
+you're an engineer, you are a doctor,
+
+24
+00:00:59,000 --> 00:01:02,000
+you are basically representing an entity
+
+25
+00:01:02,000 --> 00:01:04,000
+and then you, maybe you want
+
+26
+00:01:04,000 --> 00:01:06,000
+to show this entity in a database.
+
+27
+00:01:06,000 --> 00:01:09,000
+But again, we are not talking about database as of now,
+
+28
+00:01:09,000 --> 00:01:12,000
+but let's say from this page, I want to send a data
+
+29
+00:01:12,000 --> 00:01:16,000
+regarding an entity and then I want to directly accept
+
+30
+00:01:16,000 --> 00:01:19,000
+that entity as an object on the server side.
+
+31
+00:01:19,000 --> 00:01:21,000
+Okay, I know a lot of things to imagine.
+
+32
+00:01:21,000 --> 00:01:24,000
+Let's go step by step, what I'm talking about is,
+
+33
+00:01:24,000 --> 00:01:26,000
+let's say we have a alien class.
+
+34
+00:01:26,000 --> 00:01:28,000
+Now, when I say alien for this context,
+
+35
+00:01:28,000 --> 00:01:30,000
+alien simply means programmers.
+
+36
+00:01:30,000 --> 00:01:34,000
+Okay, so I refer programmers as aliens and why?
+
+37
+00:01:34,000 --> 00:01:36,000
+If you want to know, just go to YouTube
+
+38
+00:01:36,000 --> 00:01:39,000
+and search for why I call Alien.
+
+39
+00:01:39,000 --> 00:01:42,000
+So you will get the idea, but anyway, that's not important.
+
+40
+00:01:42,000 --> 00:01:45,000
+Important is, let's say we have this form here.
+
+41
+00:01:45,000 --> 00:01:49,000
+Now instead of asking for a number, maybe I want to ask
+
+42
+00:01:49,000 --> 00:01:51,000
+for a particular ID.
+
+43
+00:01:51,000 --> 00:01:53,000
+So every alien will have let's say two things, an ID
+
+44
+00:01:53,000 --> 00:01:57,000
+which is a number which represents you and your name.
+
+45
+00:01:57,000 --> 00:01:59,000
+So I'm saying enter ID
+
+46
+00:01:59,000 --> 00:02:01,000
+and this is for a ID, which is alien ID.
+
+47
+00:02:01,000 --> 00:02:03,000
+The ID is aid.
+
+48
+00:02:03,000 --> 00:02:08,000
+The name is aid, and I'm saying enter the name.
+
+49
+00:02:08,000 --> 00:02:12,000
+So I'm saying enter name and then this is for, aname.
+
+50
+00:02:12,000 --> 00:02:16,000
+Let's say that's the idea, I want to go for aname.
+
+51
+00:02:16,000 --> 00:02:19,000
+This is for aname, and then I'm saying submit.
+
+52
+00:02:19,000 --> 00:02:22,000
+Instead of saying add these two numbers, let's say I want
+
+53
+00:02:22,000 --> 00:02:24,000
+to add a new entry for the alien.
+
+54
+00:02:24,000 --> 00:02:26,000
+Okay, so what is an alien?
+
+55
+00:02:26,000 --> 00:02:29,000
+Alien is an entity which has two things, ID and a name.
+
+56
+00:02:29,000 --> 00:02:32,000
+And you are entering those details here.
+
+57
+00:02:32,000 --> 00:02:35,000
+And when you click on submit, you are requesting
+
+58
+00:02:35,000 --> 00:02:36,000
+for add alien.
+
+59
+00:02:36,000 --> 00:02:38,000
+Okay, now how will this look?
+
+60
+00:02:38,000 --> 00:02:40,000
+So if I go back, refresh this page
+
+61
+00:02:40,000 --> 00:02:42,000
+or restart the application first,
+
+62
+00:02:42,000 --> 00:02:45,000
+and if I go back to my output page, refresh this
+
+63
+00:02:45,000 --> 00:02:47,000
+so you can see I'm asking for the ID.
+
+64
+00:02:47,000 --> 00:02:50,000
+Let's say ID is 101 and name here is Navin.
+
+65
+00:02:50,000 --> 00:02:53,000
+Now when I say submit, you can see it says 404.
+
+66
+00:02:53,000 --> 00:02:56,000
+You know why, it's because we don't have
+
+67
+00:02:56,000 --> 00:02:57,000
+the controller for this.
+
+68
+00:02:57,000 --> 00:02:59,000
+So what I will do is I will,
+
+69
+00:02:59,000 --> 00:03:01,000
+I need a controller for add alien.
+
+70
+00:03:01,000 --> 00:03:04,000
+So I will just reuse my code, I mean that's what you say.
+
+71
+00:03:04,000 --> 00:03:08,000
+Instead of copy pasting, I will say add alien.
+
+72
+00:03:08,000 --> 00:03:11,000
+And this time the method name is also add alien.
+
+73
+00:03:11,000 --> 00:03:13,000
+So basically I'm requesting for this particular
+
+74
+00:03:13,000 --> 00:03:15,000
+UL here, this is my part.
+
+75
+00:03:15,000 --> 00:03:17,000
+But what about the parameters?
+
+76
+00:03:17,000 --> 00:03:20,000
+Of course I'm not sending num one, I'm sending aid.
+
+77
+00:03:20,000 --> 00:03:23,000
+The variable is also an ID, I'm not sending num two.
+
+78
+00:03:23,000 --> 00:03:28,000
+What I'm sending is aname and aname is of type string
+
+79
+00:03:28,000 --> 00:03:31,000
+and I'm saying aname here.
+
+80
+00:03:31,000 --> 00:03:33,000
+Now basically what we're doing is we are accepting
+
+81
+00:03:33,000 --> 00:03:34,000
+that particular alien
+
+82
+00:03:34,000 --> 00:03:39,000
+and the values are ID and aname.
+
+83
+00:03:39,000 --> 00:03:40,000
+That's what we are fetching from the URL
+
+84
+00:03:40,000 --> 00:03:43,000
+because if you see the URL here,
+
+85
+00:03:43,000 --> 00:03:46,000
+we are sending this data in the URL, so it should work.
+
+86
+00:03:46,000 --> 00:03:48,000
+So this data is coming here,
+
+87
+00:03:48,000 --> 00:03:49,000
+but then what we are doing with data,
+
+88
+00:03:49,000 --> 00:03:52,000
+of course we don't want to add basically let's say I want
+
+89
+00:03:52,000 --> 00:03:56,000
+to create an aided object and save this data.
+
+90
+00:03:56,000 --> 00:03:57,000
+Of course, right, in the Java world,
+
+91
+00:03:57,000 --> 00:03:59,000
+everything should be in the object
+
+92
+00:03:59,000 --> 00:04:01,000
+and we don't have a object yet.
+
+93
+00:04:01,000 --> 00:04:03,000
+So even if I try to create the object of alien
+
+94
+00:04:03,000 --> 00:04:07,000
+by saying object alien equal to new alien,
+
+95
+00:04:07,000 --> 00:04:10,000
+unfortunately we don't have this object
+
+96
+00:04:10,000 --> 00:04:11,000
+or this class itself.
+
+97
+00:04:11,000 --> 00:04:15,000
+So what we can do is we can create a class.
+
+98
+00:04:15,000 --> 00:04:17,000
+So you can get a class in the same package.
+
+99
+00:04:17,000 --> 00:04:18,000
+Normally it should be a different package,
+
+100
+00:04:18,000 --> 00:04:20,000
+but we'll do that packaging part later.
+
+101
+00:04:20,000 --> 00:04:22,000
+Let's say everything is in the same package.
+
+102
+00:04:22,000 --> 00:04:26,000
+So if I go back here, SRC, main, Java,
+
+103
+00:04:26,000 --> 00:04:28,000
+I have everything in this package, okay?
+
+104
+00:04:28,000 --> 00:04:31,000
+If I go back to alien, alien needs two things.
+
+105
+00:04:31,000 --> 00:04:34,000
+One is private into ID
+
+106
+00:04:34,000 --> 00:04:38,000
+and private string name,
+
+107
+00:04:38,000 --> 00:04:39,000
+in fact not aname.
+
+108
+00:04:39,000 --> 00:04:43,000
+And I want this to be aid and aname.
+
+109
+00:04:43,000 --> 00:04:46,000
+And then for these two private variables,
+
+110
+00:04:46,000 --> 00:04:47,000
+I need getters and setters.
+
+111
+00:04:47,000 --> 00:04:50,000
+So I will right click here, say generate getters
+
+112
+00:04:50,000 --> 00:04:53,000
+for these two variables, click on, okay, we got that.
+
+113
+00:04:53,000 --> 00:04:55,000
+Also, I need a method for toString.
+
+114
+00:04:55,000 --> 00:04:59,000
+So I will say right click here, generate toString
+
+115
+00:04:59,000 --> 00:05:02,000
+for which will return both these values.
+
+116
+00:05:02,000 --> 00:05:04,000
+So basically we've got a toString method,
+
+117
+00:05:04,000 --> 00:05:06,000
+which will return this data here.
+
+118
+00:05:06,000 --> 00:05:07,000
+Okay, now what did it'll return?
+
+119
+00:05:07,000 --> 00:05:11,000
+It'll print alien, the alien ID and the alien name.
+
+120
+00:05:11,000 --> 00:05:14,000
+That's what we want, nothing fancy,
+
+121
+00:05:14,000 --> 00:05:15,000
+simple class, simple pojo.
+
+122
+00:05:15,000 --> 00:05:17,000
+Go back to the controller, now you can see we do have this
+
+123
+00:05:17,000 --> 00:05:19,000
+class and we've got the object now.
+
+124
+00:05:19,000 --> 00:05:23,000
+I want to send the same object in this.
+
+125
+00:05:23,000 --> 00:05:24,000
+So I'm sending alien now
+
+126
+00:05:24,000 --> 00:05:28,000
+and maybe in short result I want to send the alien itself.
+
+127
+00:05:28,000 --> 00:05:30,000
+So whatever data I'm receiving,
+
+128
+00:05:30,000 --> 00:05:32,000
+I'm calling the same page, which is result.
+
+129
+00:05:32,000 --> 00:05:36,000
+But then the data which I'm sending now is alien data.
+
+130
+00:05:36,000 --> 00:05:38,000
+So of course in the result I have
+
+131
+00:05:38,000 --> 00:05:40,000
+to make changes instead of printing result here
+
+132
+00:05:40,000 --> 00:05:42,000
+I will print alien.
+
+133
+00:05:42,000 --> 00:05:44,000
+Or maybe we can have some fancy message here.
+
+134
+00:05:44,000 --> 00:05:46,000
+Let's do in the H2 tag, I want to say
+
+135
+00:05:46,000 --> 00:05:49,000
+Welcome to Telusko, okay, so this is data.
+
+136
+00:05:49,000 --> 00:05:51,000
+I want to, this is what I want to print on the screen.
+
+137
+00:05:51,000 --> 00:05:55,000
+And then I want to print the alien object, not result.
+
+138
+00:05:55,000 --> 00:05:58,000
+Let's say just a simple alien object
+
+139
+00:05:58,000 --> 00:05:59,000
+and maybe we can put that in a P tag.
+
+140
+00:05:59,000 --> 00:06:02,000
+I hope I have CSS for P.
+
+141
+00:06:02,000 --> 00:06:04,000
+Let's say I want to go for P tag here.
+
+142
+00:06:04,000 --> 00:06:08,000
+Just need to check if I have a P tag in the CSS.
+
+143
+00:06:09,000 --> 00:06:12,000
+Yeah, I do have, and now if I want to print this,
+
+144
+00:06:12,000 --> 00:06:14,000
+basically this should work, right?
+
+145
+00:06:14,000 --> 00:06:16,000
+So what I'm doing is from the index.jsp,
+
+146
+00:06:16,000 --> 00:06:17,000
+this is my homepage.
+
+147
+00:06:17,000 --> 00:06:19,000
+I got two entries.
+
+148
+00:06:19,000 --> 00:06:22,000
+I'm calling the add alien, which will, the request goes
+
+149
+00:06:22,000 --> 00:06:23,000
+to the controller, which is here.
+
+150
+00:06:23,000 --> 00:06:25,000
+And here we are saying add alien.
+
+151
+00:06:25,000 --> 00:06:28,000
+It'll accept these two values, aid and aname.
+
+152
+00:06:28,000 --> 00:06:31,000
+Save that in two variables, aid and aname.
+
+153
+00:06:31,000 --> 00:06:33,000
+And then we are creating an alien object.
+
+154
+00:06:33,000 --> 00:06:36,000
+But you know, we forgot one thing.
+
+155
+00:06:36,000 --> 00:06:38,000
+In the alien, we need to set the id,
+
+156
+00:06:38,000 --> 00:06:41,000
+let's say aid is whatever you're sending from there.
+
+157
+00:06:41,000 --> 00:06:43,000
+And we have to also set the aname.
+
+158
+00:06:43,000 --> 00:06:47,000
+I will set the aname as aname, okay?
+
+159
+00:06:47,000 --> 00:06:49,000
+So whatever data I've received here, I will just put
+
+160
+00:06:49,000 --> 00:06:52,000
+that in the object and that object I'm sending here.
+
+161
+00:06:52,000 --> 00:06:54,000
+But the question is, will it work, let's try it out.
+
+162
+00:06:54,000 --> 00:06:57,000
+So I'll just run this and go back to the browser.
+
+163
+00:06:57,000 --> 00:07:00,000
+Let's say I want to go to the homepage, let's refresh.
+
+164
+00:07:00,000 --> 00:07:02,000
+Or maybe I can click on submit.
+
+165
+00:07:02,000 --> 00:07:05,000
+So when you click on submit, you can see we got data.
+
+166
+00:07:05,000 --> 00:07:07,000
+This is working, right, so it says, Welcome to Telusko,
+
+167
+00:07:07,000 --> 00:07:11,000
+and then we are also printing the data.
+
+168
+00:07:11,000 --> 00:07:13,000
+Okay, so this is working, but, but, but.
+
+169
+00:07:13,000 --> 00:07:15,000
+We have one little problem here.
+
+170
+00:07:15,000 --> 00:07:17,000
+The problem is actually not a problem,
+
+171
+00:07:17,000 --> 00:07:19,000
+but then a better way to do it, don't you think?
+
+172
+00:07:19,000 --> 00:07:22,000
+We are accepting value one by one anyway,
+
+173
+00:07:22,000 --> 00:07:23,000
+we are sending this data
+
+174
+00:07:23,000 --> 00:07:25,000
+and then we do have the alien object
+
+175
+00:07:25,000 --> 00:07:28,000
+or alien class, which can represent these two values.
+
+176
+00:07:28,000 --> 00:07:31,000
+What if you have, your class has 10 values?
+
+177
+00:07:31,000 --> 00:07:33,000
+What if your class has, okay, hyper example,
+
+178
+00:07:33,000 --> 00:07:35,000
+let's say your class has 10 variables.
+
+179
+00:07:35,000 --> 00:07:38,000
+In that case, in this particular bracket, you have
+
+180
+00:07:38,000 --> 00:07:42,000
+to write 10 times at the rate request per not cool, right?
+
+181
+00:07:42,000 --> 00:07:45,000
+So can we just remove this
+
+182
+00:07:45,000 --> 00:07:49,000
+and accept with one particular object?
+
+183
+00:07:49,000 --> 00:07:51,000
+Okay, that will be good, right, so how do we do that?
+
+184
+00:07:51,000 --> 00:07:53,000
+Let's see, the next video again, you know the title
+
+185
+00:07:53,000 --> 00:07:58,000
+of the video it says Need for Model Attribute.
+
+186
+00:07:58,000 --> 00:07:59,000
+So yeah, we are going to use model attribute
+
+187
+00:07:59,000 --> 00:08:00,000
+to solve this problem.
+
diff --git a/12 - Spring  Boot Web/018 Source-Code.url b/12 - Spring  Boot Web/018 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..20f5713a15fb3df3beaca9f2397129a9a10c4f6c
--- /dev/null
+++ b/12 - Spring  Boot Web/018 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.18%20Need%20for%20ModelAttribute
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/019 Source-Code.url b/12 - Spring  Boot Web/019 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..4eb84ec86daca91659f9833244d17330fbe0cfa3
--- /dev/null
+++ b/12 - Spring  Boot Web/019 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.19%20Using%20ModelAttribute
\ No newline at end of file
diff --git a/12 - Spring  Boot Web/019 Using ModelAttribute_en.srt b/12 - Spring  Boot Web/019 Using ModelAttribute_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..7b7afa72fc8eca2b7ad76e27fd00f982cc5ebc09
--- /dev/null
+++ b/12 - Spring  Boot Web/019 Using ModelAttribute_en.srt	
@@ -0,0 +1,616 @@
+1
+00:00:00,000 --> 00:00:03,000
+(soft music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: So let's use the model attribute to solve this problem.
+
+3
+00:00:06,000 --> 00:00:10,000
+So instead of using request param for these two variables,
+
+4
+00:00:10,000 --> 00:00:12,000
+I can just remove them.
+
+5
+00:00:12,000 --> 00:00:15,000
+And what if I can simply use alien, alien?
+
+6
+00:00:15,000 --> 00:00:16,000
+Our job is done.
+
+7
+00:00:16,000 --> 00:00:18,000
+So what I'm expecting is from the form,
+
+8
+00:00:18,000 --> 00:00:20,000
+when then this data is coming,
+
+9
+00:00:20,000 --> 00:00:22,000
+it'll directly assign the value to the alien object.
+
+10
+00:00:22,000 --> 00:00:26,000
+So basically I want Spring to create this object.
+
+11
+00:00:26,000 --> 00:00:27,000
+Basically I don't want to do this step,
+
+12
+00:00:27,000 --> 00:00:29,000
+I want to skip this steps.
+
+13
+00:00:29,000 --> 00:00:31,000
+So I want Spring to create this object
+
+14
+00:00:31,000 --> 00:00:34,000
+and then assign those two values
+
+15
+00:00:34,000 --> 00:00:37,000
+which is coming from the browser.
+
+16
+00:00:37,000 --> 00:00:40,000
+So that is, not the browser but the request.
+
+17
+00:00:40,000 --> 00:00:41,000
+So can we do that?
+
+18
+00:00:41,000 --> 00:00:44,000
+So to achieve that we have to use something called
+
+19
+00:00:44,000 --> 00:00:46,000
+a model attribute.
+
+20
+00:00:46,000 --> 00:00:48,000
+Now this is the annotation which is responsible
+
+21
+00:00:48,000 --> 00:00:51,000
+to assign the value to the alien object.
+
+22
+00:00:51,000 --> 00:00:52,000
+Of course you can assign a different name to it.
+
+23
+00:00:52,000 --> 00:00:55,000
+So even this becomes optional.
+
+24
+00:00:55,000 --> 00:00:56,000
+Model view,
+
+25
+00:00:56,000 --> 00:00:59,000
+you can simply return the result here, lemme show you that.
+
+26
+00:00:59,000 --> 00:01:03,000
+So I can just remove this and instead of model and view
+
+27
+00:01:03,000 --> 00:01:04,000
+let's return a string again.
+
+28
+00:01:04,000 --> 00:01:06,000
+So you don't have to return the object.
+
+29
+00:01:06,000 --> 00:01:10,000
+So here we can mention I'm calling the result page.
+
+30
+00:01:10,000 --> 00:01:11,000
+So this object I'm receiving here
+
+31
+00:01:11,000 --> 00:01:14,000
+and that object will go to the JSB page.
+
+32
+00:01:14,000 --> 00:01:16,000
+Okay, that's what I'm expecting now.
+
+33
+00:01:16,000 --> 00:01:18,000
+So this step is also optional
+
+34
+00:01:18,000 --> 00:01:20,000
+and that can be done with the helper model object,
+
+35
+00:01:20,000 --> 00:01:21,000
+which we have talked about.
+
+36
+00:01:21,000 --> 00:01:23,000
+And now let's refresh this.
+
+37
+00:01:23,000 --> 00:01:24,000
+Let's see if it works.
+
+38
+00:01:24,000 --> 00:01:27,000
+Okay, no problem on the server, we are running it.
+
+39
+00:01:27,000 --> 00:01:29,000
+Let's go back to the homepage
+
+40
+00:01:29,000 --> 00:01:31,000
+and this time we'll enter some different data.
+
+41
+00:01:31,000 --> 00:01:33,000
+101, Harsh, click on submit and it worked.
+
+42
+00:01:33,000 --> 00:01:37,000
+You can see that we got 101 and we also got Harsh there.
+
+43
+00:01:37,000 --> 00:01:38,000
+So this is working.
+
+44
+00:01:38,000 --> 00:01:40,000
+So basically we can use a model attribute.
+
+45
+00:01:40,000 --> 00:01:42,000
+So let's say I want to change something.
+
+46
+00:01:42,000 --> 00:01:45,000
+So instead of alien, which I'm printing here,
+
+47
+00:01:45,000 --> 00:01:46,000
+what if I want to print alien1?
+
+48
+00:01:47,000 --> 00:01:48,000
+Now basically when I'm printing alien1,
+
+49
+00:01:48,000 --> 00:01:51,000
+let's see what happens if I restart my server
+
+50
+00:01:51,000 --> 00:01:52,000
+and let's go back to the homepage.
+
+51
+00:01:52,000 --> 00:01:55,000
+If I click on submit here with different data,
+
+52
+00:01:55,000 --> 00:01:57,000
+you can see it's not working.
+
+53
+00:01:57,000 --> 00:02:01,000
+Reason you are sending this data with a name alien
+
+54
+00:02:01,000 --> 00:02:04,000
+but what you are receiving here is alien1.
+
+55
+00:02:04,000 --> 00:02:06,000
+So what if you want to have alien1 here?
+
+56
+00:02:06,000 --> 00:02:10,000
+So what you can do is you can give that name here.
+
+57
+00:02:10,000 --> 00:02:11,000
+So you can say alien1.
+
+58
+00:02:11,000 --> 00:02:14,000
+So now this name will be representing there.
+
+59
+00:02:14,000 --> 00:02:18,000
+So let's try and go back, say submit.
+
+60
+00:02:18,000 --> 00:02:19,000
+So you can see it works.
+
+61
+00:02:19,000 --> 00:02:21,000
+So basically if you want to have a different name
+
+62
+00:02:21,000 --> 00:02:24,000
+than alien, then you have to mention that thing here.
+
+63
+00:02:24,000 --> 00:02:25,000
+But what if it's the same name?
+
+64
+00:02:25,000 --> 00:02:29,000
+What if it is alien and go back here
+
+65
+00:02:29,000 --> 00:02:31,000
+and let's remove this.
+
+66
+00:02:31,000 --> 00:02:32,000
+So this will work, right?
+
+67
+00:02:32,000 --> 00:02:36,000
+But what if I also remove the model attribute?
+
+68
+00:02:36,000 --> 00:02:37,000
+Is it really compulsory?
+
+69
+00:02:37,000 --> 00:02:38,000
+Let's try.
+
+70
+00:02:38,000 --> 00:02:40,000
+So I'm removing model attribute now,
+
+71
+00:02:40,000 --> 00:02:41,000
+so there's no model attribute.
+
+72
+00:02:41,000 --> 00:02:46,000
+Let's go back and submit, it still works.
+
+73
+00:02:46,000 --> 00:02:48,000
+So basically the model attribute is optional.
+
+74
+00:02:48,000 --> 00:02:50,000
+It is something which comes behind the scene.
+
+75
+00:02:50,000 --> 00:02:53,000
+It is responsible to add your data to the alien.
+
+76
+00:02:53,000 --> 00:02:55,000
+So when you don't want to have a different name,
+
+77
+00:02:55,000 --> 00:02:57,000
+you can completely skip model attribute.
+
+78
+00:02:57,000 --> 00:02:59,000
+And that's why most of the time you will not see
+
+79
+00:02:59,000 --> 00:03:01,000
+model attribute annotation there
+
+80
+00:03:01,000 --> 00:03:03,000
+because most of the time we are using the same name.
+
+81
+00:03:03,000 --> 00:03:06,000
+But yes, if you want to have a different name here,
+
+82
+00:03:06,000 --> 00:03:09,000
+then we have to use the model attribute annotation.
+
+83
+00:03:09,000 --> 00:03:11,000
+Not just that, we can also use model attribute
+
+84
+00:03:11,000 --> 00:03:12,000
+on method level.
+
+85
+00:03:12,000 --> 00:03:16,000
+Basically we have used that for the method arguments.
+
+86
+00:03:16,000 --> 00:03:18,000
+But what if you want to use on a method level,
+
+87
+00:03:18,000 --> 00:03:20,000
+something like this.
+
+88
+00:03:20,000 --> 00:03:22,000
+Let's say I have this page here.
+
+89
+00:03:22,000 --> 00:03:23,000
+Now I'm saying welcome to Telusko,
+
+90
+00:03:23,000 --> 00:03:25,000
+I'm also printing the alien name
+
+91
+00:03:25,000 --> 00:03:29,000
+and maybe I also want to print that welcome to the course.
+
+92
+00:03:29,000 --> 00:03:31,000
+So I will use a P tag here
+
+93
+00:03:31,000 --> 00:03:32,000
+and close the P tag.
+
+94
+00:03:32,000 --> 00:03:36,000
+And inside this I want to say
+
+95
+00:03:36,000 --> 00:03:41,000
+welcome to the Java world.
+
+96
+00:03:41,000 --> 00:03:42,000
+Okay?
+
+97
+00:03:42,000 --> 00:03:44,000
+Now of course this is a Java course
+
+98
+00:03:44,000 --> 00:03:45,000
+so it makes sense to print this.
+
+99
+00:03:45,000 --> 00:03:48,000
+But what if I want to print different things
+
+100
+00:03:48,000 --> 00:03:49,000
+for different courses?
+
+101
+00:03:49,000 --> 00:03:51,000
+Let's say for blockchain it should be
+
+102
+00:03:51,000 --> 00:03:52,000
+welcome to the blockchain world,
+
+103
+00:03:52,000 --> 00:03:54,000
+welcome to the AI world,
+
+104
+00:03:54,000 --> 00:03:57,000
+welcome to the .NET world, something like this.
+
+105
+00:03:57,000 --> 00:03:58,000
+So I want this to be dynamic,
+
+106
+00:03:58,000 --> 00:04:01,000
+not something like Java everywhere.
+
+107
+00:04:01,000 --> 00:04:03,000
+So we can put that in as a variable.
+
+108
+00:04:03,000 --> 00:04:05,000
+So you can say variable name is course
+
+109
+00:04:05,000 --> 00:04:09,000
+and I can just use a dollar symbol here, right?
+
+110
+00:04:09,000 --> 00:04:10,000
+So we have to provide this value
+
+111
+00:04:10,000 --> 00:04:12,000
+because if you don't provide this value,
+
+112
+00:04:12,000 --> 00:04:14,000
+you can see in the home controller nowhere we are specifying
+
+113
+00:04:14,000 --> 00:04:16,000
+the value for the course.
+
+114
+00:04:16,000 --> 00:04:19,000
+And if we don't specify the value for it,
+
+115
+00:04:19,000 --> 00:04:22,000
+let's read on this application without specifying
+
+116
+00:04:22,000 --> 00:04:23,000
+any value for course.
+
+117
+00:04:23,000 --> 00:04:25,000
+And let's refresh the result page.
+
+118
+00:04:25,000 --> 00:04:28,000
+You can see it says welcome to the world, which world?
+
+119
+00:04:28,000 --> 00:04:30,000
+Basically it's not printing the course.
+
+120
+00:04:30,000 --> 00:04:31,000
+So how do I assign the value?
+
+121
+00:04:31,000 --> 00:04:33,000
+Of course you can assign the value from here,
+
+122
+00:04:33,000 --> 00:04:35,000
+you can create a model view object
+
+123
+00:04:35,000 --> 00:04:38,000
+or maybe you can create a model object, add the data there,
+
+124
+00:04:38,000 --> 00:04:42,000
+or we can create a separate method which will return
+
+125
+00:04:42,000 --> 00:04:43,000
+the course names.
+
+126
+00:04:43,000 --> 00:04:46,000
+I will say public string course name.
+
+127
+00:04:46,000 --> 00:04:48,000
+And of course this can be dynamic.
+
+128
+00:04:48,000 --> 00:04:49,000
+Now you can write some JDBC code,
+
+129
+00:04:49,000 --> 00:04:52,000
+you can write some database code to create your database
+
+130
+00:04:52,000 --> 00:04:54,000
+and check which course this person is enrolled into.
+
+131
+00:04:54,000 --> 00:04:58,000
+But at this point I'll just make it static.
+
+132
+00:04:58,000 --> 00:05:00,000
+At least we have a control now, right?
+
+133
+00:05:00,000 --> 00:05:01,000
+I want to return Java here
+
+134
+00:05:02,000 --> 00:05:04,000
+and you can return whatever you want.
+
+135
+00:05:04,000 --> 00:05:06,000
+You can write the complete code as I mentioned before.
+
+136
+00:05:06,000 --> 00:05:09,000
+But here just to keep it simple, I'm saying Java.
+
+137
+00:05:09,000 --> 00:05:12,000
+And here I can use a model attribute
+
+138
+00:05:12,000 --> 00:05:15,000
+and in the bracket I can mention the course.
+
+139
+00:05:15,000 --> 00:05:18,000
+So basically what we are doing is the value for the course
+
+140
+00:05:18,000 --> 00:05:20,000
+is whatever this particular method returns.
+
+141
+00:05:20,000 --> 00:05:22,000
+It is Java, so it'll say Java.
+
+142
+00:05:22,000 --> 00:05:25,000
+If we return something else, it'll be that particular value.
+
+143
+00:05:25,000 --> 00:05:28,000
+So we can use model attribute on top of the method as well.
+
+144
+00:05:28,000 --> 00:05:30,000
+And that's why we use it most of the time.
+
+145
+00:05:30,000 --> 00:05:34,000
+If you want to have some values in the result page,
+
+146
+00:05:34,000 --> 00:05:37,000
+which is not generated by a method or some other methods
+
+147
+00:05:39,000 --> 00:05:42,000
+or which is common for most of the requests.
+
+148
+00:05:42,000 --> 00:05:44,000
+So you can see I'm restarting the application,
+
+149
+00:05:44,000 --> 00:05:48,000
+let's refresh this and it worked.
+
+150
+00:05:48,000 --> 00:05:51,000
+Now this basically that's how you use the model attribute
+
+151
+00:05:51,000 --> 00:05:53,000
+on top of this.
+
+152
+00:05:53,000 --> 00:05:54,000
+So yeah, that's it about model attribute.
+
+153
+00:05:54,000 --> 00:05:57,000
+I hope it makes sense, some sense now.
+
+154
+00:05:57,000 --> 00:05:59,000
+When to use, when not to use the model attribute.
+
diff --git a/12 - Spring  Boot Web/external-links.txt b/12 - Spring  Boot Web/external-links.txt
new file mode 100644
index 0000000000000000000000000000000000000000..656cb8e72eeda89b80ae1566caaad4a2c693e41e
--- /dev/null
+++ b/12 - Spring  Boot Web/external-links.txt	
@@ -0,0 +1,51 @@
+
+002 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.2%20Creating%20A%20Servlet%20Project%201
+
+003 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.3%20Running%20Tomcat
+
+004 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.4%20Servlet%20Mapping
+
+005 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.5%20Responding%20To%20The%20Client
+
+007 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.7%20Creating%20a%20Spring%20Boot%20Web%20App%20Project
+
+008 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.8%20Creating%20a%20JSP%20Page
+
+009 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.9%20Creating%20a%20Controller
+
+010 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.10%20RequestMapping
+
+011 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.11%20Sending%20data%20to%20Controller
+
+012 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.12%20Accepting%20Data%20the%20servlet%20way
+
+013 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.13%20Display%20Data%20on%20Result%20Page
+
+014 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.14%20RequestParam
+
+015 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.15%20Model%20Object
+
+016 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.16%20Setting%20Prefix%20and%20Suffix
+
+017 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.17%20ModelAndView
+
+018 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.18%20Need%20for%20ModelAttribute
+
+019 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/6%20Spring%20%20Boot%20Web/5.19%20Using%20ModelAttribute
diff --git a/13 - Exploring Web MVC without Spring Boot/001 Spring MVC Introduction_en.srt b/13 - Exploring Web MVC without Spring Boot/001 Spring MVC Introduction_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..cb07411f546f20ca73cb80125598185126167848
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/001 Spring MVC Introduction_en.srt	
@@ -0,0 +1,316 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: In this module, we'll talk about Spring MVC.
+
+3
+00:00:06,000 --> 00:00:07,000
+Now you will say, "Hey, we have done that before," right?
+
+4
+00:00:07,000 --> 00:00:10,000
+We have talked about Spring MVC.
+
+5
+00:00:10,000 --> 00:00:12,000
+Actually we talked about Spring Boot MVC.
+
+6
+00:00:12,000 --> 00:00:14,000
+So basically, we have used MVC,
+
+7
+00:00:14,000 --> 00:00:16,000
+but then with the help of Spring Boot.
+
+8
+00:00:16,000 --> 00:00:19,000
+Now, what it does is it makes our job easy
+
+9
+00:00:19,000 --> 00:00:20,000
+and that's what we have done, right?
+
+10
+00:00:20,000 --> 00:00:23,000
+So basically, we were able to build the controller.
+
+11
+00:00:23,000 --> 00:00:24,000
+We were able to go to our page.
+
+12
+00:00:24,000 --> 00:00:25,000
+So, what page I'm talking about?
+
+13
+00:00:25,000 --> 00:00:28,000
+So if I run this application once again,
+
+14
+00:00:28,000 --> 00:00:31,000
+just show you what we have done till now.
+
+15
+00:00:31,000 --> 00:00:33,000
+If I go to the homepage,
+
+16
+00:00:33,000 --> 00:00:34,000
+you can say it is giving you this page
+
+17
+00:00:34,000 --> 00:00:38,000
+because we have done with the UI, with the controllers,
+
+18
+00:00:38,000 --> 00:00:41,000
+I mean controllers, property files,
+
+19
+00:00:41,000 --> 00:00:43,000
+we have done some configuration here, right?
+
+20
+00:00:43,000 --> 00:00:44,000
+Now, this works,
+
+21
+00:00:44,000 --> 00:00:47,000
+but then we have talked about Spring Boot, right?
+
+22
+00:00:47,000 --> 00:00:49,000
+It makes your work easy.
+
+23
+00:00:49,000 --> 00:00:51,000
+There's another way of doing the same thing
+
+24
+00:00:51,000 --> 00:00:52,000
+without Spring Boot.
+
+25
+00:00:52,000 --> 00:00:56,000
+That is, with the help of Spring Framework directly.
+
+26
+00:00:56,000 --> 00:00:58,000
+So, we have a component called Spring MVC
+
+27
+00:00:58,000 --> 00:01:00,000
+which we're going to focus in this section.
+
+28
+00:01:00,000 --> 00:01:02,000
+Now here, we'll do the same thing, okay?
+
+29
+00:01:02,000 --> 00:01:04,000
+Same project, maybe we'll reuse the code,
+
+30
+00:01:04,000 --> 00:01:06,000
+but we'll not be using Spring Boot.
+
+31
+00:01:06,000 --> 00:01:11,000
+That means we have to do lot of configuration by ourself
+
+32
+00:01:11,000 --> 00:01:14,000
+and in the entire section, of course, nothing will be new
+
+33
+00:01:14,000 --> 00:01:17,000
+because the flow will be same, the controller will be same.
+
+34
+00:01:17,000 --> 00:01:19,000
+What will change is the configuration.
+
+35
+00:01:19,000 --> 00:01:21,000
+So I want your focus mostly on the configuration,
+
+36
+00:01:21,000 --> 00:01:23,000
+not on the other things.
+
+37
+00:01:23,000 --> 00:01:24,000
+So, what are the things we need?
+
+38
+00:01:24,000 --> 00:01:26,000
+Now, first of all, if you want to build web application
+
+39
+00:01:26,000 --> 00:01:27,000
+without Spring Boot,
+
+40
+00:01:27,000 --> 00:01:30,000
+basically in this project we have used a embedded Tomcat.
+
+41
+00:01:30,000 --> 00:01:31,000
+But then in Spring Framework,
+
+42
+00:01:31,000 --> 00:01:34,000
+we'll be using a external Tomcat.
+
+43
+00:01:34,000 --> 00:01:35,000
+So what you need,
+
+44
+00:01:35,000 --> 00:01:37,000
+the first thing is the external Tomcat.
+
+45
+00:01:37,000 --> 00:01:39,000
+How will you get that? It's very easy.
+
+46
+00:01:39,000 --> 00:01:42,000
+You can just go to the Google
+
+47
+00:01:42,000 --> 00:01:45,000
+and search for Apache Tomcat download,
+
+48
+00:01:45,000 --> 00:01:47,000
+and you can get the version 10, which works.
+
+49
+00:01:47,000 --> 00:01:50,000
+In fact, I'll be using version 10 here.
+
+50
+00:01:50,000 --> 00:01:51,000
+And depend upon which OS you are using,
+
+51
+00:01:51,000 --> 00:01:55,000
+you can get this and it'd work.
+
+52
+00:01:55,000 --> 00:01:58,000
+So basically, I've got the zip folder,
+
+53
+00:01:58,000 --> 00:01:59,000
+then I unzipped it,
+
+54
+00:01:59,000 --> 00:02:01,000
+and now I have that in my Download folder.
+
+55
+00:02:01,000 --> 00:02:02,000
+That's the first thing you need.
+
+56
+00:02:02,000 --> 00:02:04,000
+The next thing you will need is a IDE.
+
+57
+00:02:04,000 --> 00:02:07,000
+Okay, we are using the IntelliJ, right?
+
+58
+00:02:07,000 --> 00:02:09,000
+But then, IntelliJ IDEA which we are using
+
+59
+00:02:09,000 --> 00:02:09,000
+is a community version,
+
+60
+00:02:09,000 --> 00:02:12,000
+which means basically we have to use...
+
+61
+00:02:12,000 --> 00:02:15,000
+It doesn't, by default, support the external servers.
+
+62
+00:02:15,000 --> 00:02:16,000
+If you want to use IntelliJ,
+
+63
+00:02:16,000 --> 00:02:19,000
+you can use the Ultimate version.
+
+64
+00:02:19,000 --> 00:02:21,000
+Now, since we want to focus on the free softwares here,
+
+65
+00:02:21,000 --> 00:02:23,000
+so I'm going to use Eclipse for this section
+
+66
+00:02:23,000 --> 00:02:26,000
+because Eclipse is free and we can run the servers.
+
+67
+00:02:26,000 --> 00:02:27,000
+Okay, before we go ahead,
+
+68
+00:02:27,000 --> 00:02:30,000
+I want to show you one more thing regarding the Tomcat.
+
+69
+00:02:30,000 --> 00:02:32,000
+So, you can see it says Tomcat 10.
+
+70
+00:02:32,000 --> 00:02:35,000
+They have made some changes from Java EE to Jakarta EE.
+
+71
+00:02:35,000 --> 00:02:38,000
+So basically, certain things will change in Tomcat 10.
+
+72
+00:02:38,000 --> 00:02:41,000
+So instead of using Java X, we are going to use Jakarta X,
+
+73
+00:02:41,000 --> 00:02:43,000
+I mean Jakarta, not X.
+
+74
+00:02:43,000 --> 00:02:45,000
+So if you don't want to use Jakarta,
+
+75
+00:02:45,000 --> 00:02:48,000
+you can still go back to Tomcat 9 which uses Java X,
+
+76
+00:02:48,000 --> 00:02:51,000
+and you can still use it.
+
+77
+00:02:51,000 --> 00:02:52,000
+Okay, anyway, once we got this software,
+
+78
+00:02:52,000 --> 00:02:54,000
+it doesn't matter which one you get,
+
+79
+00:02:54,000 --> 00:02:57,000
+we can start working on the same project.
+
diff --git a/13 - Exploring Web MVC without Spring Boot/002 Creating a Spring MVC Project_en.srt b/13 - Exploring Web MVC without Spring Boot/002 Creating a Spring MVC Project_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..a3a01c8f7e56f37d68d54981d09c652bf8868d18
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/002 Creating a Spring MVC Project_en.srt	
@@ -0,0 +1,776 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: So the first step here is to get IDE.
+
+3
+00:00:05,000 --> 00:00:07,000
+We have talked about we can use Eclipse here,
+
+4
+00:00:07,000 --> 00:00:08,000
+and it's very easy.
+
+5
+00:00:08,000 --> 00:00:10,000
+You can just go to Google, download the Eclipse version,
+
+6
+00:00:10,000 --> 00:00:14,000
+but make sure you get the Eclipse Java EE version,
+
+7
+00:00:14,000 --> 00:00:17,000
+not normal Eclipse for Java developers.
+
+8
+00:00:17,000 --> 00:00:17,000
+So you have to make sure
+
+9
+00:00:17,000 --> 00:00:19,000
+that you get it for enterprise developers.
+
+10
+00:00:19,000 --> 00:00:21,000
+And once you have that, you can open Eclipse
+
+11
+00:00:21,000 --> 00:00:23,000
+and I'm opening Eclipse now.
+
+12
+00:00:23,000 --> 00:00:25,000
+Okay, so this is my Eclipse here
+
+13
+00:00:25,000 --> 00:00:29,000
+and then I'm using a workspace name as spring.
+
+14
+00:00:29,000 --> 00:00:31,000
+Of course, when you open Eclipse, it will ask you
+
+15
+00:00:31,000 --> 00:00:33,000
+for a name, for the workspace,
+
+16
+00:00:33,000 --> 00:00:34,000
+just mention whatever you want.
+
+17
+00:00:34,000 --> 00:00:36,000
+I have a workspace here with name spring.
+
+18
+00:00:36,000 --> 00:00:38,000
+Okay, so in this, let's create a project.
+
+19
+00:00:38,000 --> 00:00:40,000
+Now since we are not using Spring Boot,
+
+20
+00:00:40,000 --> 00:00:43,000
+so we'll not be going to the official Spring initializer,
+
+21
+00:00:43,000 --> 00:00:45,000
+we will be using the Maven project.
+
+22
+00:00:45,000 --> 00:00:48,000
+So here let me create a Maven project.
+
+23
+00:00:48,000 --> 00:00:52,000
+So I will just go to the File, and say New, Maven Project.
+
+24
+00:00:52,000 --> 00:00:53,000
+Now since this will be a web application,
+
+25
+00:00:53,000 --> 00:00:54,000
+we'll choose a different doc type.
+
+26
+00:00:54,000 --> 00:00:56,000
+So just observe what I'm doing.
+
+27
+00:00:56,000 --> 00:00:57,000
+So I will click on Next here,
+
+28
+00:00:57,000 --> 00:00:59,000
+and this is where it says catalog.
+
+29
+00:00:59,000 --> 00:01:01,000
+I will be clicking on Internal.
+
+30
+00:01:01,000 --> 00:01:04,000
+In the Internal catalog, instead of going for quickstart,
+
+31
+00:01:04,000 --> 00:01:06,000
+we'll be going for a web application,
+
+32
+00:01:06,000 --> 00:01:09,000
+because we are building a Spring web application
+
+33
+00:01:09,000 --> 00:01:10,000
+using Spring MVC.
+
+34
+00:01:10,000 --> 00:01:12,000
+So select this, click on Next.
+
+35
+00:01:12,000 --> 00:01:13,000
+It will ask you for the group ID.
+
+36
+00:01:13,000 --> 00:01:15,000
+I will say group ID is com.telusko,
+
+37
+00:01:15,000 --> 00:01:18,000
+and the artifact ID, you can name anything you want,
+
+38
+00:01:18,000 --> 00:01:21,000
+but I will say SpringMVCDemo,
+
+39
+00:01:21,000 --> 00:01:23,000
+and nothing much, click on Finish.
+
+40
+00:01:23,000 --> 00:01:25,000
+This will give you a beautiful Maven project.
+
+41
+00:01:25,000 --> 00:01:27,000
+So by the time it is happening, what I will do is
+
+42
+00:01:27,000 --> 00:01:29,000
+I will go back to my download
+
+43
+00:01:29,000 --> 00:01:32,000
+and show you how your Tomcat folder looks like.
+
+44
+00:01:32,000 --> 00:01:34,000
+So this is the Tomcat which I'm using,
+
+45
+00:01:34,000 --> 00:01:38,000
+which is Apache Tomcat 10.1.16.
+
+46
+00:01:38,000 --> 00:01:40,000
+And in this you can see there are different folders.
+
+47
+00:01:40,000 --> 00:01:43,000
+One of the important folder is bin, because in this folder,
+
+48
+00:01:43,000 --> 00:01:46,000
+you will find the start and stop .sh.
+
+49
+00:01:46,000 --> 00:01:48,000
+This is how you basically run your Tomcat.
+
+50
+00:01:48,000 --> 00:01:49,000
+But do we really have to use this?
+
+51
+00:01:49,000 --> 00:01:51,000
+We'll see that in some time.
+
+52
+00:01:51,000 --> 00:01:53,000
+So looks like Maven is taking some time.
+
+53
+00:01:53,000 --> 00:01:55,000
+So my Eclipse just crashed. Let me just do that once again.
+
+54
+00:01:57,000 --> 00:01:59,000
+Click on Finish. It is creating the project.
+
+55
+00:01:59,000 --> 00:02:01,000
+So when it's creating the project, you can see it is asking
+
+56
+00:02:01,000 --> 00:02:04,000
+for the group ID, artifact ID, version, and package.
+
+57
+00:02:04,000 --> 00:02:07,000
+I will say yes, this is what I want to go for, and done.
+
+58
+00:02:07,000 --> 00:02:09,000
+You can see we have project is done,
+
+59
+00:02:09,000 --> 00:02:11,000
+which we can see our project section here
+
+60
+00:02:11,000 --> 00:02:12,000
+on the left hand side.
+
+61
+00:02:12,000 --> 00:02:14,000
+And this is your console, this is your outline.
+
+62
+00:02:14,000 --> 00:02:16,000
+We'll see later. Not needed now.
+
+63
+00:02:16,000 --> 00:02:18,000
+Okay, so this is the project which we got.
+
+64
+00:02:18,000 --> 00:02:20,000
+Now in this, if you open your pom.xml,
+
+65
+00:02:20,000 --> 00:02:23,000
+no where we are saying this is a Spring project.
+
+66
+00:02:23,000 --> 00:02:25,000
+So if you want this to work, we have to make sure
+
+67
+00:02:25,000 --> 00:02:28,000
+that you get your Spring dependencies here, okay?
+
+68
+00:02:28,000 --> 00:02:30,000
+Now why? I will show you in some time.
+
+69
+00:02:30,000 --> 00:02:31,000
+Let's see the folder structure.
+
+70
+00:02:31,000 --> 00:02:35,000
+So if you see, if you expand src, you have a main folder.
+
+71
+00:02:35,000 --> 00:02:38,000
+You don't have a Java folder here, that's weird.
+
+72
+00:02:38,000 --> 00:02:40,000
+And in this you have a webapp.
+
+73
+00:02:40,000 --> 00:02:43,000
+Inside this, you have index.jsp, which is this page.
+
+74
+00:02:43,000 --> 00:02:45,000
+And the good thing is we'll not be needing this JSP,
+
+75
+00:02:45,000 --> 00:02:47,000
+because we already have our two pages.
+
+76
+00:02:47,000 --> 00:02:50,000
+So I will delete this particular page here.
+
+77
+00:02:50,000 --> 00:02:52,000
+And if you go to the Java Resources,
+
+78
+00:02:52,000 --> 00:02:55,000
+you can see we don't have a java folder yet.
+
+79
+00:02:55,000 --> 00:02:57,000
+So what I will do is I will just go back to main,
+
+80
+00:02:57,000 --> 00:02:59,000
+and make sure that I create a java folder,
+
+81
+00:02:59,000 --> 00:03:02,000
+it's because I'll be putting my code there.
+
+82
+00:03:02,000 --> 00:03:04,000
+So you can see I got a java folder now,
+
+83
+00:03:04,000 --> 00:03:06,000
+and now from where you will get the code?
+
+84
+00:03:06,000 --> 00:03:09,000
+So first of all, even before we do any configuration,
+
+85
+00:03:09,000 --> 00:03:11,000
+let's get the code from our Spring Boot project
+
+86
+00:03:11,000 --> 00:03:15,000
+and put it here and let's see how it fails, okay?
+
+87
+00:03:15,000 --> 00:03:17,000
+So I will go back to my IDE,
+
+88
+00:03:17,000 --> 00:03:20,000
+and from here, we are going to get some files.
+
+89
+00:03:20,000 --> 00:03:21,000
+So first of all we'll get the files,
+
+90
+00:03:21,000 --> 00:03:23,000
+which is these three files.
+
+91
+00:03:23,000 --> 00:03:24,000
+In fact, we don't need the main code,
+
+92
+00:03:24,000 --> 00:03:27,000
+we just need Alien and HomeController.
+
+93
+00:03:27,000 --> 00:03:29,000
+So let's get that. Go back to Eclipse.
+
+94
+00:03:29,000 --> 00:03:31,000
+And in this you can see, we don't have a package yet.
+
+95
+00:03:31,000 --> 00:03:33,000
+So let me create a package first.
+
+96
+00:03:33,000 --> 00:03:36,000
+So in the java folder, I will have the same package name
+
+97
+00:03:36,000 --> 00:03:37,000
+which we were using earlier,
+
+98
+00:03:39,000 --> 00:03:44,000
+which is com.telusko.SpringMVCDemo.
+
+99
+00:03:44,000 --> 00:03:47,000
+Of course, we have different end package,
+
+100
+00:03:47,000 --> 00:03:48,000
+but the structure will be same.
+
+101
+00:03:48,000 --> 00:03:50,000
+So if we can see we don't have a package here.
+
+102
+00:03:50,000 --> 00:03:51,000
+So first of all, before copying this
+
+103
+00:03:51,000 --> 00:03:54,000
+or pasting this, we'll create a package.
+
+104
+00:03:54,000 --> 00:03:56,000
+So it's a New, Package,
+
+105
+00:03:56,000 --> 00:04:00,000
+and we'll name this package as com.telusko.SpringMVCDemo.
+
+106
+00:04:02,000 --> 00:04:03,000
+So you can see we've got our package here,
+
+107
+00:04:03,000 --> 00:04:06,000
+and it should also give the folder structure in this case.
+
+108
+00:04:06,000 --> 00:04:10,000
+Okay, now we can simply paste it in this. So paste.
+
+109
+00:04:10,000 --> 00:04:11,000
+And now you can see
+
+110
+00:04:11,000 --> 00:04:14,000
+you will have those two particular files there.
+
+111
+00:04:14,000 --> 00:04:16,000
+We got Alien, and we got HomeController.
+
+112
+00:04:17,000 --> 00:04:19,000
+Okay, nothing fancy, simple stuff,
+
+113
+00:04:19,000 --> 00:04:21,000
+but we just have to make sure
+
+114
+00:04:21,000 --> 00:04:25,000
+that we use a proper packaging now, which is SpringBootDemo,
+
+115
+00:04:25,000 --> 00:04:27,000
+I mean SpringMVCDemo, not boot, done.
+
+116
+00:04:27,000 --> 00:04:29,000
+So you can see we got the packages,
+
+117
+00:04:29,000 --> 00:04:31,000
+but if you go back to the HomeController,
+
+118
+00:04:31,000 --> 00:04:33,000
+there are lot of errors here.
+
+119
+00:04:33,000 --> 00:04:36,000
+And what are the errors? It says Jakarta not found, okay?
+
+120
+00:04:36,000 --> 00:04:38,000
+In fact, we don't even need this servlet code,
+
+121
+00:04:38,000 --> 00:04:39,000
+or do we have?
+
+122
+00:04:39,000 --> 00:04:43,000
+HttpServlet is used nowhere. We can remove that.
+
+123
+00:04:43,000 --> 00:04:45,000
+Next we want this Spring Framework.
+
+124
+00:04:45,000 --> 00:04:48,000
+And in this project we don't have Spring Framework.
+
+125
+00:04:48,000 --> 00:04:49,000
+So we'll do that in some time.
+
+126
+00:04:49,000 --> 00:04:52,000
+Next, I want to make sure that I get my JSP files.
+
+127
+00:04:52,000 --> 00:04:56,000
+So if you can see, we do have a webapp folder here, webapp.
+
+128
+00:04:56,000 --> 00:04:59,000
+Inside this, I want to paste my JSP files.
+
+129
+00:04:59,000 --> 00:05:03,000
+So if you can go back here, pick up the views folder itself
+
+130
+00:05:03,000 --> 00:05:04,000
+and paste in this webapp.
+
+131
+00:05:04,000 --> 00:05:06,000
+And you can see we got views here.
+
+132
+00:05:06,000 --> 00:05:08,000
+Some issue with the Eclipse, doesn't matter.
+
+133
+00:05:08,000 --> 00:05:10,000
+We'll see if this works or not.
+
+134
+00:05:10,000 --> 00:05:11,000
+But we ought to make sure,
+
+135
+00:05:11,000 --> 00:05:13,000
+I mean we have copied the important files, right?
+
+136
+00:05:13,000 --> 00:05:15,000
+Apart from this, there's no other file we have to copy.
+
+137
+00:05:15,000 --> 00:05:17,000
+Of course you can get CSS,
+
+138
+00:05:17,000 --> 00:05:19,000
+but in this particular section we'll skip CSS,
+
+139
+00:05:19,000 --> 00:05:21,000
+because it needs additional configuration.
+
+140
+00:05:21,000 --> 00:05:24,000
+And our motto is not to build beautiful UI here, right?
+
+141
+00:05:24,000 --> 00:05:27,000
+Our motto here is to build a better backend.
+
+142
+00:05:27,000 --> 00:05:28,000
+In the application.properties,
+
+143
+00:05:28,000 --> 00:05:29,000
+we don't have to set anything here,
+
+144
+00:05:29,000 --> 00:05:31,000
+because in the Spring MVC project,
+
+145
+00:05:31,000 --> 00:05:33,000
+we are not going to use property files.
+
+146
+00:05:33,000 --> 00:05:37,000
+We'll be using the old pattern of XML files, we'll use that.
+
+147
+00:05:37,000 --> 00:05:39,000
+Next we have to get the dependencies.
+
+148
+00:05:39,000 --> 00:05:42,000
+And you can see, here, we have used the Jasper
+
+149
+00:05:42,000 --> 00:05:47,000
+to convert the JSPs and we got the spring-boot-starter-web.
+
+150
+00:05:48,000 --> 00:05:50,000
+Anything else we need? Nothing.
+
+151
+00:05:50,000 --> 00:05:52,000
+But then we are not going to use the Spring Boot, right?
+
+152
+00:05:52,000 --> 00:05:54,000
+So what dependency I need?
+
+153
+00:05:54,000 --> 00:05:57,000
+So we need three dependencies first of all.
+
+154
+00:05:57,000 --> 00:05:59,000
+Depend upon which Tomcat version you're using.
+
+155
+00:05:59,000 --> 00:06:01,000
+If you are working with Tomcat 9,
+
+156
+00:06:01,000 --> 00:06:04,000
+you might not need the JSTL dependency.
+
+157
+00:06:04,000 --> 00:06:06,000
+But let's start with the first one.
+
+158
+00:06:06,000 --> 00:06:08,000
+The first dependency you need is Spring Framework,
+
+159
+00:06:08,000 --> 00:06:11,000
+but then Spring MVC, actually not framework.
+
+160
+00:06:11,000 --> 00:06:14,000
+So when you search for Spring MVC, this is what you need.
+
+161
+00:06:14,000 --> 00:06:16,000
+Spring Web MVC, click on this,
+
+162
+00:06:16,000 --> 00:06:19,000
+and you can get this one, 6.1.0,
+
+163
+00:06:19,000 --> 00:06:20,000
+depending on when you're watching this.
+
+164
+00:06:20,000 --> 00:06:24,000
+If you're watching after some time, pick up the second last
+
+165
+00:06:24,000 --> 00:06:27,000
+or third last one, which has a more usage.
+
+166
+00:06:27,000 --> 00:06:31,000
+So click on 6.1.0, get this dependency.
+
+167
+00:06:31,000 --> 00:06:33,000
+And in the Eclipse, make sure
+
+168
+00:06:33,000 --> 00:06:36,000
+that you go to your pom.xml file.
+
+169
+00:06:36,000 --> 00:06:39,000
+And inside this, just add this dependency.
+
+170
+00:06:39,000 --> 00:06:40,000
+So that's the first dependency we need,
+
+171
+00:06:40,000 --> 00:06:42,000
+which is for Spring MVC.
+
+172
+00:06:42,000 --> 00:06:45,000
+And the moment you do that in the Eclipse,
+
+173
+00:06:45,000 --> 00:06:49,000
+if you see the libraries here in the Maven Dependencies,
+
+174
+00:06:49,000 --> 00:06:51,000
+you will get all the Spring dependencies.
+
+175
+00:06:51,000 --> 00:06:51,000
+That's the first step.
+
+176
+00:06:51,000 --> 00:06:54,000
+And if you go back to HomeController,
+
+177
+00:06:54,000 --> 00:06:56,000
+you can see we don't have any errors now.
+
+178
+00:06:56,000 --> 00:06:58,000
+We got all the things which are needed.
+
+179
+00:06:58,000 --> 00:07:00,000
+Okay, that's good. So that's it.
+
+180
+00:07:00,000 --> 00:07:03,000
+You know, we got the pages, we got the Java code,
+
+181
+00:07:03,000 --> 00:07:05,000
+and we also got the dependency.
+
+182
+00:07:05,000 --> 00:07:06,000
+Let's see if this works,
+
+183
+00:07:06,000 --> 00:07:08,000
+and if it fails, let's see, how do we solve it?
+
+184
+00:07:08,000 --> 00:07:11,000
+But before running this, we have to make sure
+
+185
+00:07:11,000 --> 00:07:13,000
+that in your Eclipse we have a server.
+
+186
+00:07:13,000 --> 00:07:14,000
+Because when you try to run this,
+
+187
+00:07:14,000 --> 00:07:15,000
+how would you run this project?
+
+188
+00:07:15,000 --> 00:07:17,000
+If you say right click here, and Run As,
+
+189
+00:07:17,000 --> 00:07:19,000
+if you click on Run on Server,
+
+190
+00:07:19,000 --> 00:07:22,000
+we don't have a server here, we have to connect it.
+
+191
+00:07:22,000 --> 00:07:24,000
+So how do we do that? Simple step.
+
+192
+00:07:24,000 --> 00:07:27,000
+You can click on this no server,
+
+193
+00:07:27,000 --> 00:07:29,000
+but we'll see that in the next video,
+
+194
+00:07:29,000 --> 00:07:30,000
+how do you set up a Tomcat here.
+
diff --git a/13 - Exploring Web MVC without Spring Boot/002 Source-Code.url b/13 - Exploring Web MVC without Spring Boot/002 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..dfaa3c0c01ce28652ed100bfdcbe7d72d7cdf379
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/002 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.2%20Creating%20a%20Spring%20MVC%20Project_1
\ No newline at end of file
diff --git a/13 - Exploring Web MVC without Spring Boot/003 Running Tomcat in Eclipse_en.srt b/13 - Exploring Web MVC without Spring Boot/003 Running Tomcat in Eclipse_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..46496fb1d21a9cda3ccb9aaa82ecf495abbe1d99
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/003 Running Tomcat in Eclipse_en.srt	
@@ -0,0 +1,228 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:04,000
+-: Now, let's see,
+
+3
+00:00:04,000 --> 00:00:06,000
+how do you set up a Tomcat in Eclipse
+
+4
+00:00:06,000 --> 00:00:08,000
+and how do you connect your project to that Tomcat?
+
+5
+00:00:08,000 --> 00:00:10,000
+So if you go to the Servers tabs here,
+
+6
+00:00:10,000 --> 00:00:12,000
+you can click on "No servers are available".
+
+7
+00:00:12,000 --> 00:00:13,000
+It will give you a prompt.
+
+8
+00:00:13,000 --> 00:00:14,000
+Now, we have to add a server.
+
+9
+00:00:14,000 --> 00:00:17,000
+Now you can select the server which you want to add.
+
+10
+00:00:17,000 --> 00:00:19,000
+This time we want to go for Tomcat.
+
+11
+00:00:19,000 --> 00:00:21,000
+So I will click on Apache and scroll down.
+
+12
+00:00:21,000 --> 00:00:24,000
+We are going for Tomcat v10.1, click next.
+
+13
+00:00:24,000 --> 00:00:27,000
+Now this is where you have to select a path
+
+14
+00:00:27,000 --> 00:00:29,000
+where you have your Tomcat downloaded.
+
+15
+00:00:29,000 --> 00:00:30,000
+If you don't have a downloaded version,
+
+16
+00:00:30,000 --> 00:00:33,000
+you can click on Download and install, even that works.
+
+17
+00:00:33,000 --> 00:00:35,000
+But I have a setup, so we click on browse.
+
+18
+00:00:35,000 --> 00:00:37,000
+And just navigate to Tomcat.
+
+19
+00:00:37,000 --> 00:00:40,000
+So basically search for this particular folder.
+
+20
+00:00:40,000 --> 00:00:41,000
+So I have it in my downloads.
+
+21
+00:00:41,000 --> 00:00:44,000
+You can just get it from the path, select the path,
+
+22
+00:00:44,000 --> 00:00:46,000
+and click on Next.
+
+23
+00:00:46,000 --> 00:00:47,000
+Do you want to, so it will ask you,
+
+24
+00:00:47,000 --> 00:00:49,000
+do you want to add any project to your Tomcat?
+
+25
+00:00:49,000 --> 00:00:52,000
+If you don't do that, so your Tomcat will run,
+
+26
+00:00:52,000 --> 00:00:53,000
+but not your project.
+
+27
+00:00:53,000 --> 00:00:57,000
+So we can shift our project inside this and click on Finish.
+
+28
+00:00:57,000 --> 00:01:00,000
+So now we have a Tomcat, which is in Stopped stage.
+
+29
+00:01:00,000 --> 00:01:03,000
+But if we expand this, we have a Spring project there.
+
+30
+00:01:03,000 --> 00:01:07,000
+And if you start this Tomcat, let's see if that works.
+
+31
+00:01:07,000 --> 00:01:08,000
+I will click on start.
+
+32
+00:01:08,000 --> 00:01:10,000
+Okay, it says it's already in use.
+
+33
+00:01:10,000 --> 00:01:14,000
+It's because in the IntelliJ, I have not stopped it.
+
+34
+00:01:14,000 --> 00:01:15,000
+We are using the same port number.
+
+35
+00:01:15,000 --> 00:01:17,000
+If you want to change the port number, you can do that.
+
+36
+00:01:17,000 --> 00:01:18,000
+But here I don't want to do that.
+
+37
+00:01:18,000 --> 00:01:20,000
+So I will just, you can see we have an icon here.
+
+38
+00:01:20,000 --> 00:01:22,000
+Restart the server, Relaunch.
+
+39
+00:01:22,000 --> 00:01:24,000
+Okay, we'll start it from here
+
+40
+00:01:25,000 --> 00:01:27,000
+and you can see the Tomcat started.
+
+41
+00:01:27,000 --> 00:01:29,000
+Okay, so that's good,
+
+42
+00:01:29,000 --> 00:01:30,000
+but now we have to run the project.
+
+43
+00:01:30,000 --> 00:01:32,000
+So I will just right-click here.
+
+44
+00:01:32,000 --> 00:01:34,000
+Say Run As, Run on Server.
+
+45
+00:01:34,000 --> 00:01:36,000
+We already have a Tomcat server here.
+
+46
+00:01:36,000 --> 00:01:40,000
+Click on Next, Finish, and boom.
+
+47
+00:01:40,000 --> 00:01:43,000
+So you can see, it has opened a browser for us.
+
+48
+00:01:43,000 --> 00:01:45,000
+I'll be using my own browser.
+
+49
+00:01:45,000 --> 00:01:49,000
+And the URL is localhost:8080, enter.
+
+50
+00:01:49,000 --> 00:01:50,000
+It's not working.
+
+51
+00:01:50,000 --> 00:01:51,000
+Something is not working.
+
+52
+00:01:51,000 --> 00:01:52,000
+Okay, what is that?
+
+53
+00:01:52,000 --> 00:01:55,000
+So let's search if it is working,
+
+54
+00:01:55,000 --> 00:01:56,000
+you can see it is not working.
+
+55
+00:01:56,000 --> 00:01:59,000
+It says "resource is not available".
+
+56
+00:01:59,000 --> 00:02:00,000
+Okay, so it is not working.
+
+57
+00:02:00,000 --> 00:02:03,000
+But why? Let's understand that in the next video.
+
diff --git a/13 - Exploring Web MVC without Spring Boot/003 Source-Code.url b/13 - Exploring Web MVC without Spring Boot/003 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..0e1cb0bf3785127e913f25d5668e247b83d14859
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/003 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.3%20Running%20Tomcat%20in%20Eclipse
\ No newline at end of file
diff --git a/13 - Exploring Web MVC without Spring Boot/004 Dispatcher Servlet_en.srt b/13 - Exploring Web MVC without Spring Boot/004 Dispatcher Servlet_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..6b9d98cdbeaa2b2385a01f2cc931be76551a4df1
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/004 Dispatcher Servlet_en.srt	
@@ -0,0 +1,812 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: So, we have created this project off SpringMVC,
+
+3
+00:00:06,000 --> 00:00:07,000
+and that is a Maven project, right?
+
+4
+00:00:07,000 --> 00:00:09,000
+And then, when we were trying to run the project,
+
+5
+00:00:09,000 --> 00:00:10,000
+it is not working.
+
+6
+00:00:10,000 --> 00:00:12,000
+Now, mind you, we do have a controller.
+
+7
+00:00:12,000 --> 00:00:15,000
+So if you see the code, we do have a controller here,
+
+8
+00:00:15,000 --> 00:00:16,000
+which is HomeController.
+
+9
+00:00:16,000 --> 00:00:20,000
+And then, we do have a mapping for the homepage.
+
+10
+00:00:20,000 --> 00:00:22,000
+It should return the index.jsp,
+
+11
+00:00:22,000 --> 00:00:25,000
+but what you got here is not found.
+
+12
+00:00:25,000 --> 00:00:26,000
+What went wrong here?
+
+13
+00:00:26,000 --> 00:00:29,000
+See, the thing is, this is not a Spring Boot project.
+
+14
+00:00:29,000 --> 00:00:31,000
+This is a normal Maven project.
+
+15
+00:00:31,000 --> 00:00:34,000
+Now even if you added your Spring dependencies here,
+
+16
+00:00:34,000 --> 00:00:37,000
+your Maven has no idea that it has to call
+
+17
+00:00:37,000 --> 00:00:38,000
+this particular controller.
+
+18
+00:00:38,000 --> 00:00:40,000
+It's because in this Maven project,
+
+19
+00:00:40,000 --> 00:00:42,000
+which we are running on Tomcat,
+
+20
+00:00:42,000 --> 00:00:44,000
+now Tomcat being a Servlet Container,
+
+21
+00:00:44,000 --> 00:00:47,000
+it is responsible to run the servlets.
+
+22
+00:00:47,000 --> 00:00:49,000
+But then there has to be mapping, right?
+
+23
+00:00:49,000 --> 00:00:53,000
+So there have to be a mapping for a request and a servlet.
+
+24
+00:00:53,000 --> 00:00:54,000
+And we are not doing that.
+
+25
+00:00:54,000 --> 00:00:56,000
+Of course, we will say there is a controller,
+
+26
+00:00:56,000 --> 00:00:59,000
+but then your Tomcat has no idea.
+
+27
+00:00:59,000 --> 00:01:00,000
+The thing is, in Spring Framework,
+
+28
+00:01:00,000 --> 00:01:02,000
+we can have multiple controllers, right?
+
+29
+00:01:02,000 --> 00:01:04,000
+As I mentioned before, for different requests,
+
+30
+00:01:04,000 --> 00:01:05,000
+we'll be having different controllers.
+
+31
+00:01:05,000 --> 00:01:07,000
+And to navigate to different controllers,
+
+32
+00:01:07,000 --> 00:01:09,000
+we have our Front controllers.
+
+33
+00:01:09,000 --> 00:01:11,000
+So basically, you have a client,
+
+34
+00:01:11,000 --> 00:01:13,000
+and then you have a lot of controllers on the other side.
+
+35
+00:01:13,000 --> 00:01:15,000
+But when a client sends a request,
+
+36
+00:01:15,000 --> 00:01:17,000
+the request will not directly go to a particular controller.
+
+37
+00:01:17,000 --> 00:01:20,000
+The request will go to something called a Front controller.
+
+38
+00:01:20,000 --> 00:01:22,000
+Now, this sits in between.
+
+39
+00:01:22,000 --> 00:01:24,000
+And your Front controller is responsible
+
+40
+00:01:24,000 --> 00:01:26,000
+to send a particular request
+
+41
+00:01:26,000 --> 00:01:27,000
+to a particular controller.
+
+42
+00:01:27,000 --> 00:01:29,000
+So let's say if you request for the homepage,
+
+43
+00:01:29,000 --> 00:01:31,000
+it is a job of your Front controller to know
+
+44
+00:01:31,000 --> 00:01:32,000
+that I have a controller here
+
+45
+00:01:32,000 --> 00:01:35,000
+who can accept the request for the homepage.
+
+46
+00:01:35,000 --> 00:01:37,000
+Let's say you request for an addition of two numbers.
+
+47
+00:01:37,000 --> 00:01:38,000
+You are saying add.
+
+48
+00:01:38,000 --> 00:01:39,000
+Now, you have a controller there
+
+49
+00:01:39,000 --> 00:01:41,000
+who is responsible to add two numbers.
+
+50
+00:01:41,000 --> 00:01:43,000
+Now, your front controller will know that,
+
+51
+00:01:43,000 --> 00:01:45,000
+hey, we have a controller there who can add two numbers
+
+52
+00:01:45,000 --> 00:01:47,000
+with a request "add".
+
+53
+00:01:47,000 --> 00:01:48,000
+Now, this controller,
+
+54
+00:01:48,000 --> 00:01:50,000
+the Front controller in Spring Framework
+
+55
+00:01:50,000 --> 00:01:53,000
+is called a DispatcherServlet.
+
+56
+00:01:53,000 --> 00:01:56,000
+So this is the first servlet which you have to go to.
+
+57
+00:01:56,000 --> 00:01:59,000
+And then this will navigate to different controllers.
+
+58
+00:01:59,000 --> 00:02:01,000
+Now, in this project, we do have a controller,
+
+59
+00:02:01,000 --> 00:02:03,000
+but we don't have a DispatcherServlet.
+
+60
+00:02:03,000 --> 00:02:07,000
+Now, do we have to create our own DispatcherServlet? No.
+
+61
+00:02:07,000 --> 00:02:08,000
+Basically, Spring says,
+
+62
+00:02:08,000 --> 00:02:10,000
+don't worry, I do have a DispatcherServlet,
+
+63
+00:02:10,000 --> 00:02:11,000
+you just have to configure it.
+
+64
+00:02:11,000 --> 00:02:13,000
+So you have to tell your Tomcat,
+
+65
+00:02:13,000 --> 00:02:15,000
+hey, you know, every time you send a request,
+
+66
+00:02:15,000 --> 00:02:18,000
+send the request to the DispatcherServlet.
+
+67
+00:02:18,000 --> 00:02:19,000
+DispatcherServlet will take care
+
+68
+00:02:19,000 --> 00:02:21,000
+of the remaining operations.
+
+69
+00:02:21,000 --> 00:02:22,000
+Now, how will you configure that?
+
+70
+00:02:22,000 --> 00:02:25,000
+Now see, one of the file which goes,
+
+71
+00:02:25,000 --> 00:02:26,000
+I mean every time you run this project,
+
+72
+00:02:26,000 --> 00:02:29,000
+your Tomcat goes to one file,
+
+73
+00:02:29,000 --> 00:02:31,000
+which is the web.xml.
+
+74
+00:02:31,000 --> 00:02:32,000
+Now, this is where you have to mention,
+
+75
+00:02:32,000 --> 00:02:33,000
+hey, you know, when you send a request,
+
+76
+00:02:33,000 --> 00:02:36,000
+send request to this particular servlet.
+
+77
+00:02:36,000 --> 00:02:39,000
+And the way you do that is by providing two tags.
+
+78
+00:02:39,000 --> 00:02:43,000
+So basically the first tag is the servlet tag
+
+79
+00:02:43,000 --> 00:02:47,000
+and the second one is the servlet-mapping tag.
+
+80
+00:02:47,000 --> 00:02:49,000
+So basically, we have to use this too,
+
+81
+00:02:49,000 --> 00:02:51,000
+which is servlet tag and servlet-mapping tag.
+
+82
+00:02:51,000 --> 00:02:53,000
+Now, in this servlet mapping,
+
+83
+00:02:53,000 --> 00:02:57,000
+basically this is where you mention the url-pattern.
+
+84
+00:02:57,000 --> 00:02:59,000
+So you can say for all the requests,
+
+85
+00:02:59,000 --> 00:03:01,000
+doesn't matter what request we are getting.
+
+86
+00:03:01,000 --> 00:03:03,000
+For all the requests,
+
+87
+00:03:03,000 --> 00:03:05,000
+send the request to this particular servlet.
+
+88
+00:03:05,000 --> 00:03:07,000
+Now, which servlet I am talking about?
+
+89
+00:03:07,000 --> 00:03:10,000
+I'm talking about the DispatcherServlet.
+
+90
+00:03:10,000 --> 00:03:11,000
+Now, how do you get DispatcherServlet?
+
+91
+00:03:11,000 --> 00:03:13,000
+So, if you go to your dependency,
+
+92
+00:03:13,000 --> 00:03:14,000
+of course, I know the full name,
+
+93
+00:03:14,000 --> 00:03:16,000
+but if you want to know the full name,
+
+94
+00:03:16,000 --> 00:03:18,000
+even we can forgot that, right?
+
+95
+00:03:18,000 --> 00:03:20,000
+So if you expand your Maven Dependencies,
+
+96
+00:03:20,000 --> 00:03:22,000
+we see something called webmvc.
+
+97
+00:03:22,000 --> 00:03:24,000
+If you expand this,
+
+98
+00:03:24,000 --> 00:03:28,000
+there's something called "org.springframework.web.servlet."
+
+99
+00:03:28,000 --> 00:03:29,000
+And if you expand this,
+
+100
+00:03:29,000 --> 00:03:32,000
+you will find a DispatcherServlet here.
+
+101
+00:03:32,000 --> 00:03:34,000
+This is the class you have to use.
+
+102
+00:03:34,000 --> 00:03:38,000
+So I can simply copy the qualified name for it
+
+103
+00:03:38,000 --> 00:03:42,000
+and paste it here without the ".class" extension.
+
+104
+00:03:42,000 --> 00:03:42,000
+And that's done.
+
+105
+00:03:42,000 --> 00:03:44,000
+So what we are saying is,
+
+106
+00:03:44,000 --> 00:03:46,000
+every time someone sends a request for the url-mapping
+
+107
+00:03:46,000 --> 00:03:49,000
+or this particular URL, which is the homepage,
+
+108
+00:03:49,000 --> 00:03:52,000
+you have to call the DispatcherServlet.
+
+109
+00:03:52,000 --> 00:03:54,000
+In fact, not just the homepage, any request.
+
+110
+00:03:54,000 --> 00:03:56,000
+But then to map these two,
+
+111
+00:03:56,000 --> 00:03:57,000
+basically there are different tags, right?
+
+112
+00:03:57,000 --> 00:04:00,000
+Servlet and servlet-mapping are two different tags.
+
+113
+00:04:00,000 --> 00:04:01,000
+If you want to connect these two,
+
+114
+00:04:01,000 --> 00:04:03,000
+you have to add one more tag here,
+
+115
+00:04:03,000 --> 00:04:06,000
+which is your servlet-name.
+
+116
+00:04:06,000 --> 00:04:07,000
+Of course, you can name anything here.
+
+117
+00:04:07,000 --> 00:04:09,000
+I can say "dispatcher" or I can say "telusko".
+
+118
+00:04:09,000 --> 00:04:12,000
+Let's say I'm going for the servlet name as "telusko".
+
+119
+00:04:12,000 --> 00:04:14,000
+And here also, you have to do the same thing,
+
+120
+00:04:14,000 --> 00:04:16,000
+"<servlet-name>telusko".
+
+121
+00:04:16,000 --> 00:04:18,000
+You have to make sure these two are the same
+
+122
+00:04:18,000 --> 00:04:20,000
+because you can have multiple servlet tags
+
+123
+00:04:20,000 --> 00:04:21,000
+in this particular file
+
+124
+00:04:21,000 --> 00:04:23,000
+for different URL or mapping.
+
+125
+00:04:23,000 --> 00:04:26,000
+But at this point, I want to make sure that I only have one.
+
+126
+00:04:26,000 --> 00:04:30,000
+So for all of the requests, call the display servlet.
+
+127
+00:04:30,000 --> 00:04:33,000
+And to map these two, we have to use "telusko", "telusko".
+
+128
+00:04:33,000 --> 00:04:35,000
+Okay, now we have done the mapping.
+
+129
+00:04:35,000 --> 00:04:37,000
+Now we are saying, hey Tomcat,
+
+130
+00:04:37,000 --> 00:04:38,000
+every time you get a request,
+
+131
+00:04:38,000 --> 00:04:40,000
+send the request to the DispatcherServlet.
+
+132
+00:04:40,000 --> 00:04:43,000
+DispatcherServlet will take care of the other operations.
+
+133
+00:04:43,000 --> 00:04:45,000
+I hope this time this will work now.
+
+134
+00:04:45,000 --> 00:04:47,000
+Let's run this application.
+
+135
+00:04:47,000 --> 00:04:49,000
+You can see there is no problem.
+
+136
+00:04:49,000 --> 00:04:50,000
+Tomcat started.
+
+137
+00:04:50,000 --> 00:04:53,000
+So let me go to the browser and run.
+
+138
+00:04:53,000 --> 00:04:55,000
+Okay, I think I missed one more.
+
+139
+00:04:55,000 --> 00:04:56,000
+Let me just change the configuration,
+
+140
+00:04:56,000 --> 00:04:57,000
+this is still not working.
+
+141
+00:04:57,000 --> 00:04:58,000
+So I will go to the Build Path.
+
+142
+00:04:58,000 --> 00:05:02,000
+I'm not sure if it is accepting our Tomcat data.
+
+143
+00:05:02,000 --> 00:05:02,000
+We'll go to library.
+
+144
+00:05:02,000 --> 00:05:05,000
+Okay, so we have forgot to add the Tomcat library here.
+
+145
+00:05:05,000 --> 00:05:07,000
+So sometimes, if it doesn't work,
+
+146
+00:05:07,000 --> 00:05:09,000
+please check your Build Path.
+
+147
+00:05:09,000 --> 00:05:13,000
+So what I did, is I right-clicked on my project,
+
+148
+00:05:13,000 --> 00:05:14,000
+go to the Build Path.
+
+149
+00:05:14,000 --> 00:05:15,000
+And that's what, you know,
+
+150
+00:05:15,000 --> 00:05:17,000
+when you work with normal SpringMVC
+
+151
+00:05:17,000 --> 00:05:18,000
+or normal Spring Framework,
+
+152
+00:05:18,000 --> 00:05:19,000
+you have to do a lot of configuration.
+
+153
+00:05:19,000 --> 00:05:21,000
+And if you're thinking you'll be doing this every time,
+
+154
+00:05:21,000 --> 00:05:22,000
+not exactly.
+
+155
+00:05:22,000 --> 00:05:24,000
+This configuration will be done only once
+
+156
+00:05:24,000 --> 00:05:25,000
+when you start the project.
+
+157
+00:05:25,000 --> 00:05:26,000
+So click on library.
+
+158
+00:05:26,000 --> 00:05:29,000
+First of all, I will change my Java version to Java 21
+
+159
+00:05:29,000 --> 00:05:30,000
+because that's what I'm using.
+
+160
+00:05:30,000 --> 00:05:31,000
+Finish.
+
+161
+00:05:31,000 --> 00:05:35,000
+And then here, I want to add the Runtime as well.
+
+162
+00:05:35,000 --> 00:05:36,000
+Just on the safer side.
+
+163
+00:05:36,000 --> 00:05:38,000
+Click on Apply and Close.
+
+164
+00:05:38,000 --> 00:05:40,000
+Let's see if this works now.
+
+165
+00:05:40,000 --> 00:05:42,000
+Restart the server, go back, refresh.
+
+166
+00:05:42,000 --> 00:05:43,000
+Still not working.
+
+167
+00:05:43,000 --> 00:05:45,000
+Okay, so now when I'm running this,
+
+168
+00:05:45,000 --> 00:05:48,000
+there was some issue with the cashier or something.
+
+169
+00:05:48,000 --> 00:05:50,000
+So you can see when I run this now,
+
+170
+00:05:50,000 --> 00:05:51,000
+we got a different error.
+
+171
+00:05:51,000 --> 00:05:53,000
+So this time you're not getting 404.
+
+172
+00:05:53,000 --> 00:05:54,000
+That means it was able to find it.
+
+173
+00:05:54,000 --> 00:05:56,000
+We got a different error, which is the 500.
+
+174
+00:05:56,000 --> 00:05:59,000
+It says "Internal Server Error".
+
+175
+00:05:59,000 --> 00:06:01,000
+Now, if you read the error
+
+176
+00:06:01,000 --> 00:06:03,000
+and that's what you do when you get the errors, right?
+
+177
+00:06:03,000 --> 00:06:06,000
+So it says, if you see the Root Cause,
+
+178
+00:06:06,000 --> 00:06:09,000
+it says there is a problem with the IOException
+
+179
+00:06:09,000 --> 00:06:10,000
+with the XML file.
+
+180
+00:06:10,000 --> 00:06:12,000
+It's because it is not able to.
+
+181
+00:06:12,000 --> 00:06:16,000
+I mean, from this file, which is called telusko-servlet.xml.
+
+182
+00:06:16,000 --> 00:06:17,000
+Okay, now this is weird
+
+183
+00:06:17,000 --> 00:06:19,000
+because we don't even have this file
+
+184
+00:06:19,000 --> 00:06:21,000
+and if you go down it actually says
+
+185
+00:06:21,000 --> 00:06:23,000
+you don't have this file.
+
+186
+00:06:23,000 --> 00:06:25,000
+But why do we need this file?
+
+187
+00:06:25,000 --> 00:06:28,000
+I mean that's crazy, right? We got the DispatcherServlet.
+
+188
+00:06:28,000 --> 00:06:30,000
+It should send the request to DispatcherServlet.
+
+189
+00:06:30,000 --> 00:06:31,000
+And you know what?
+
+190
+00:06:31,000 --> 00:06:34,000
+It is actually sending the request to the DispatcherServlet.
+
+191
+00:06:34,000 --> 00:06:36,000
+But DispatcherServlet has its own problem.
+
+192
+00:06:36,000 --> 00:06:37,000
+DispatcherServlet says, if you want me to work,
+
+193
+00:06:37,000 --> 00:06:40,000
+and if you want me to understand different controllers
+
+194
+00:06:40,000 --> 00:06:43,000
+and mapping, you have to configure me.
+
+195
+00:06:43,000 --> 00:06:46,000
+Of course, we were expecting that the DispatcherServlet
+
+196
+00:06:46,000 --> 00:06:50,000
+will be a magician to know all the controllers, but not.
+
+197
+00:06:50,000 --> 00:06:51,000
+We have to configure that as well.
+
+198
+00:06:51,000 --> 00:06:53,000
+And how do you configure?
+
+199
+00:06:53,000 --> 00:06:55,000
+How do you talk to dispatch servlet?
+
+200
+00:06:55,000 --> 00:06:57,000
+And that's where we have to create this file,
+
+201
+00:06:57,000 --> 00:06:59,000
+which is telusko-servlet.
+
+202
+00:06:59,000 --> 00:07:00,000
+How do we do that?
+
+203
+00:07:00,000 --> 00:07:01,000
+Let's see in the next video.
+
diff --git a/13 - Exploring Web MVC without Spring Boot/004 Source-Code.url b/13 - Exploring Web MVC without Spring Boot/004 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..97053be509d52e1ed1c32061d4e755fc5f1f8afe
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/004 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.4%20Dispatcher%20Servlet
\ No newline at end of file
diff --git a/13 - Exploring Web MVC without Spring Boot/005 Configuring the DispatcherServlet_en.srt b/13 - Exploring Web MVC without Spring Boot/005 Configuring the DispatcherServlet_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..8f3ff0abc0224b99d671def6a7a6eb332173e7f2
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/005 Configuring the DispatcherServlet_en.srt	
@@ -0,0 +1,548 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: It's time to configure our DispatcherServlet.
+
+3
+00:00:06,000 --> 00:00:08,000
+And the way you do that, the way you talk
+
+4
+00:00:08,000 --> 00:00:10,000
+to a DispatcherServlet is with the help of this file.
+
+5
+00:00:10,000 --> 00:00:12,000
+See, there are multiple ways of doing this.
+
+6
+00:00:12,000 --> 00:00:15,000
+You can also use the Java based configuration
+
+7
+00:00:15,000 --> 00:00:18,000
+using annotations, but then we'll be using XML here,
+
+8
+00:00:18,000 --> 00:00:20,000
+just to understand what happens behind the scene.
+
+9
+00:00:20,000 --> 00:00:22,000
+Okay, so I will create this file.
+
+10
+00:00:22,000 --> 00:00:25,000
+So this is telusko-servlet.xml.
+
+11
+00:00:25,000 --> 00:00:27,000
+I will create this file. But then where?
+
+12
+00:00:27,000 --> 00:00:29,000
+The folder is /WEB-INF.
+
+13
+00:00:29,000 --> 00:00:31,000
+This is where it is expecting it to be.
+
+14
+00:00:31,000 --> 00:00:32,000
+That's the first thing.
+
+15
+00:00:32,000 --> 00:00:35,000
+Second, why it has this name, telusko-servlet?
+
+16
+00:00:35,000 --> 00:00:37,000
+Why not something else?
+
+17
+00:00:37,000 --> 00:00:41,000
+It's because if you look at your project, the name
+
+18
+00:00:41,000 --> 00:00:43,000
+of your servlet we are mentioning as telusko, right?
+
+19
+00:00:43,000 --> 00:00:46,000
+That's why it says telusko-servlet.
+
+20
+00:00:46,000 --> 00:00:48,000
+If you give a different name, let's say
+
+21
+00:00:48,000 --> 00:00:51,000
+if you give a name, t1, t2, or whatever you want to,
+
+22
+00:00:51,000 --> 00:00:55,000
+so it will be that, what the name, -servlet.xml.
+
+23
+00:00:55,000 --> 00:00:57,000
+And that's why we got that particular file.
+
+24
+00:00:57,000 --> 00:01:00,000
+So let's create the file. So I will just right click here.
+
+25
+00:01:00,000 --> 00:01:01,000
+And say, "Hey,
+
+26
+00:01:01,000 --> 00:01:06,000
+I want to create a new XML file," which is here.
+
+27
+00:01:06,000 --> 00:01:11,000
+Click on Next. Name this file, which is telusko-servlet.
+
+28
+00:01:11,000 --> 00:01:13,000
+And if you Enter, you got your file.
+
+29
+00:01:13,000 --> 00:01:15,000
+And now in this, we have to do the configuration.
+
+30
+00:01:15,000 --> 00:01:17,000
+Now what configuration I'm talking about?
+
+31
+00:01:17,000 --> 00:01:19,000
+See, basically we are not, we don't have
+
+32
+00:01:19,000 --> 00:01:22,000
+to actually manually mention each controller.
+
+33
+00:01:22,000 --> 00:01:26,000
+Reason being, we are using annotations here,
+
+34
+00:01:26,000 --> 00:01:28,000
+you can see we are doing the mapping here.
+
+35
+00:01:28,000 --> 00:01:29,000
+But what if you don't want to do mapping
+
+36
+00:01:29,000 --> 00:01:31,000
+in the controller or in the class?
+
+37
+00:01:31,000 --> 00:01:33,000
+In that case, in this particular file,
+
+38
+00:01:33,000 --> 00:01:34,000
+you have to do all the mapping.
+
+39
+00:01:34,000 --> 00:01:36,000
+For this request, call this particular method,
+
+40
+00:01:36,000 --> 00:01:39,000
+for this request, call this particular method.
+
+41
+00:01:39,000 --> 00:01:40,000
+And I don't wanna do that, right?
+
+42
+00:01:40,000 --> 00:01:42,000
+So we do have annotation there.
+
+43
+00:01:42,000 --> 00:01:45,000
+So we just have to mention to your DispatcherServlet
+
+44
+00:01:45,000 --> 00:01:47,000
+by saying, "Hey, you know, I'm using annotations
+
+45
+00:01:47,000 --> 00:01:49,000
+on the controllers, just use them."
+
+46
+00:01:49,000 --> 00:01:51,000
+And the way you can do that is
+
+47
+00:01:51,000 --> 00:01:52,000
+first of all, you can mention that "Hey, you know,"
+
+48
+00:01:52,000 --> 00:01:54,000
+you can say, "Hey, DispatcherServlet,"
+
+49
+00:01:54,000 --> 00:01:59,000
+I can say DS, "Find the classes in this package."
+
+50
+00:01:59,000 --> 00:02:00,000
+You can mention the package name.
+
+51
+00:02:00,000 --> 00:02:02,000
+That's the first thing you have to mention.
+
+52
+00:02:02,000 --> 00:02:06,000
+And second, you have to mention that I'm using annotations.
+
+53
+00:02:06,000 --> 00:02:11,000
+So you can say, "I'm using annotations," that's it.
+
+54
+00:02:11,000 --> 00:02:13,000
+DispatcherServlet will know that I have
+
+55
+00:02:13,000 --> 00:02:15,000
+to find this file in this package,
+
+56
+00:02:15,000 --> 00:02:16,000
+whatever package you mention here.
+
+57
+00:02:16,000 --> 00:02:19,000
+And then you are saying that I'm using annotations.
+
+58
+00:02:19,000 --> 00:02:20,000
+Will it work? Of course not.
+
+59
+00:02:20,000 --> 00:02:23,000
+You know, this is XML file, not a essay book, right?
+
+60
+00:02:23,000 --> 00:02:26,000
+This will not work, so this is not how you write a letter
+
+61
+00:02:26,000 --> 00:02:27,000
+to DispatcherServlet, okay?
+
+62
+00:02:27,000 --> 00:02:29,000
+But then we have to do the same thing.
+
+63
+00:02:29,000 --> 00:02:31,000
+For that, we have to use some tags.
+
+64
+00:02:31,000 --> 00:02:33,000
+And whenever you use tags in XML,
+
+65
+00:02:33,000 --> 00:02:36,000
+we have to also define those tags.
+
+66
+00:02:36,000 --> 00:02:39,000
+So for definition, I don't want to type it, everything,
+
+67
+00:02:39,000 --> 00:02:41,000
+because a lengthy file, so I do have a file with me.
+
+68
+00:02:41,000 --> 00:02:42,000
+You will find that in resources.
+
+69
+00:02:42,000 --> 00:02:45,000
+So this is the definition for those beans
+
+70
+00:02:45,000 --> 00:02:47,000
+or to those tags which you are going to use.
+
+71
+00:02:47,000 --> 00:02:51,000
+So let's end this. So this is what we wanted, right?
+
+72
+00:02:51,000 --> 00:02:53,000
+So this is the bean definition,
+
+73
+00:02:53,000 --> 00:02:57,000
+and now we can talk to the DispatcherServlet.
+
+74
+00:02:57,000 --> 00:02:59,000
+So the first thing you will mention is component scan.
+
+75
+00:02:59,000 --> 00:03:03,000
+Now you want to mention which package you have
+
+76
+00:03:03,000 --> 00:03:04,000
+to scan for the components.
+
+77
+00:03:04,000 --> 00:03:07,000
+So you will say ctx. So what is ctx here? Just context.
+
+78
+00:03:07,000 --> 00:03:11,000
+You can see we are defining the context definition as well.
+
+79
+00:03:11,000 --> 00:03:12,000
+So that's it, refer with ctx,
+
+80
+00:03:12,000 --> 00:03:14,000
+and that's what we are mentioning here.
+
+81
+00:03:14,000 --> 00:03:16,000
+So ctx:component-scan, and then the base package, you have
+
+82
+00:03:16,000 --> 00:03:20,000
+to mention the package name, which is com.telusko here.
+
+83
+00:03:20,000 --> 00:03:21,000
+You can be specific here,
+
+84
+00:03:21,000 --> 00:03:23,000
+you can mention the exact package name.
+
+85
+00:03:23,000 --> 00:03:27,000
+But com.telusko works. And that's the first thing.
+
+86
+00:03:27,000 --> 00:03:30,000
+Next you have to mention that you are using annotations.
+
+87
+00:03:30,000 --> 00:03:33,000
+And for that, you'll be using annotation-config.
+
+88
+00:03:33,000 --> 00:03:36,000
+In fact, you can also do a self-closing tags here
+
+89
+00:03:36,000 --> 00:03:37,000
+instead of typing everything.
+
+90
+00:03:37,000 --> 00:03:39,000
+That's it, these two things you have to mention
+
+91
+00:03:39,000 --> 00:03:42,000
+that you have to scan the package in this package.
+
+92
+00:03:42,000 --> 00:03:45,000
+And then you have to use,
+
+93
+00:03:45,000 --> 00:03:47,000
+I mean we are using annotation configuration, that's it.
+
+94
+00:03:47,000 --> 00:03:49,000
+Now this is how you talk to DispatcherServlet,
+
+95
+00:03:49,000 --> 00:03:52,000
+not by writing those two lines, but will this work?
+
+96
+00:03:52,000 --> 00:03:54,000
+Let's try it out. Of course we learn from the errors.
+
+97
+00:03:54,000 --> 00:03:56,000
+So I will just rerun this application,
+
+98
+00:03:56,000 --> 00:03:59,000
+and go back
+
+99
+00:03:59,000 --> 00:04:02,000
+to my code, run.
+
+100
+00:04:02,000 --> 00:04:04,000
+Okay, now this time we got a different error,
+
+101
+00:04:04,000 --> 00:04:06,000
+but at least every time we do something,
+
+102
+00:04:06,000 --> 00:04:08,000
+errors are changing, so that's a good thing, right?
+
+103
+00:04:08,000 --> 00:04:11,000
+But what is the problem now?
+
+104
+00:04:11,000 --> 00:04:13,000
+Is it the DispatcherServlet is not able to find?
+
+105
+00:04:13,000 --> 00:04:15,000
+Yes, DispatcherServlet was able
+
+106
+00:04:15,000 --> 00:04:17,000
+to find this particular file.
+
+107
+00:04:17,000 --> 00:04:20,000
+Now it knows that which package you have to scan,
+
+108
+00:04:20,000 --> 00:04:21,000
+which annotation you have to, I mean
+
+109
+00:04:21,000 --> 00:04:24,000
+we have been using annotation configuration, what's wrong?
+
+110
+00:04:24,000 --> 00:04:25,000
+And if you observe here,
+
+111
+00:04:25,000 --> 00:04:29,000
+in the console it says home method called,
+
+112
+00:04:29,000 --> 00:04:33,000
+which means it was able to call the controller.
+
+113
+00:04:33,000 --> 00:04:37,000
+So we have reached till here, but it's not going after that.
+
+114
+00:04:37,000 --> 00:04:39,000
+You know what's going wrong?
+
+115
+00:04:39,000 --> 00:04:44,000
+Let's go back to our page and it says 404. That's right.
+
+116
+00:04:44,000 --> 00:04:45,000
+But look at the message.
+
+117
+00:04:45,000 --> 00:04:48,000
+It says, no endpoint GET, for the GET request,
+
+118
+00:04:48,000 --> 00:04:51,000
+and the URL you're searching for is index.
+
+119
+00:04:51,000 --> 00:04:55,000
+Now from where we got index? Let's go back.
+
+120
+00:04:55,000 --> 00:04:58,000
+We are returning a index.
+
+121
+00:04:58,000 --> 00:05:01,000
+DispatcherServlet says, "You are telling me to call index.
+
+122
+00:05:01,000 --> 00:05:02,000
+But what is index?"
+
+123
+00:05:02,000 --> 00:05:04,000
+If you remember, when we were working
+
+124
+00:05:04,000 --> 00:05:08,000
+with this Spring Boot application, we did the same thing.
+
+125
+00:05:08,000 --> 00:05:10,000
+We are returning index there,
+
+126
+00:05:10,000 --> 00:05:13,000
+but in the property files we have mentioned
+
+127
+00:05:13,000 --> 00:05:16,000
+that you have to find the index in this particular folder,
+
+128
+00:05:17,000 --> 00:05:20,000
+and the extension for that index is .jsp.
+
+129
+00:05:20,000 --> 00:05:23,000
+Nowhere we are doing that in this particular project.
+
+130
+00:05:23,000 --> 00:05:26,000
+So that means you have to also configure the resolver.
+
+131
+00:05:26,000 --> 00:05:28,000
+Remember when I mentioned that, when you return this,
+
+132
+00:05:28,000 --> 00:05:31,000
+behind the scene, it uses something called a resolver.
+
+133
+00:05:31,000 --> 00:05:33,000
+So there's something called view resolver, or in full name,
+
+134
+00:05:33,000 --> 00:05:36,000
+it is called InternalResourceViewResolver.
+
+135
+00:05:36,000 --> 00:05:39,000
+So we have to configure that. Okay, how do we do that?
+
+136
+00:05:39,000 --> 00:05:42,000
+How do we configure the InternalResourceViewResolver?
+
+137
+00:05:42,000 --> 00:05:44,000
+Let's see that in the next video.
+
diff --git a/13 - Exploring Web MVC without Spring Boot/005 Source-Code.url b/13 - Exploring Web MVC without Spring Boot/005 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..73f306d639824e359e526c5173ba2c7f887e565a
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/005 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.5%20Configuring%20the%20DispatcherServlet
\ No newline at end of file
diff --git a/13 - Exploring Web MVC without Spring Boot/006 Internal Resource View Resolver_en.srt b/13 - Exploring Web MVC without Spring Boot/006 Internal Resource View Resolver_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..a136378917c7ea96ed9ffd3cdff58afd913207ea
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/006 Internal Resource View Resolver_en.srt	
@@ -0,0 +1,408 @@
+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: Now it's time to configure
+
+3
+00:00:05,000 --> 00:00:08,000
+the Internal Resource View Resolver.
+
+4
+00:00:08,000 --> 00:00:09,000
+It's because when you return index here,
+
+5
+00:00:09,000 --> 00:00:12,000
+despite server has no idea where this index is
+
+6
+00:00:12,000 --> 00:00:14,000
+and what is extension for this, okay.
+
+7
+00:00:14,000 --> 00:00:17,000
+And the way you do that is again, go back to the the server
+
+8
+00:00:18,000 --> 00:00:20,000
+teluskoserver.xml because this is where you
+
+9
+00:00:20,000 --> 00:00:22,000
+talk to your dispatch satellite.
+
+10
+00:00:22,000 --> 00:00:26,000
+Now to configure that, we have to use a bean tag here.
+
+11
+00:00:26,000 --> 00:00:29,000
+So I have to say bean. Now, which bean I'm talking about?
+
+12
+00:00:29,000 --> 00:00:31,000
+So let's enter this. Now, which bean I'm talking about?
+
+13
+00:00:31,000 --> 00:00:34,000
+So there's something called internal resource resolver
+
+14
+00:00:34,000 --> 00:00:38,000
+and we have to mention the qualified path,
+
+15
+00:00:38,000 --> 00:00:40,000
+which is the full path for the class.
+
+16
+00:00:40,000 --> 00:00:41,000
+And the way you get that
+
+17
+00:00:41,000 --> 00:00:43,000
+is if you go back to Maven Dependencies
+
+18
+00:00:43,000 --> 00:00:44,000
+The same package.
+
+19
+00:00:44,000 --> 00:00:45,000
+Again, we have to go with this
+
+20
+00:00:45,000 --> 00:00:50,000
+org.springframework.web.servlet, but a different sub folder.
+
+21
+00:00:50,000 --> 00:00:53,000
+If you go down, you can see something called view.
+
+22
+00:00:53,000 --> 00:00:55,000
+And if you expand this, you will get the name,
+
+23
+00:00:55,000 --> 00:00:58,000
+which is Internal Resource View Resolver, which is this.
+
+24
+00:00:58,000 --> 00:01:02,000
+I will copy this name, qualified copy, qualified name.
+
+25
+00:01:02,000 --> 00:01:05,000
+And in this you have to mention the class equal to
+
+26
+00:01:05,000 --> 00:01:08,000
+and in the double codes, just mention
+
+27
+00:01:08,000 --> 00:01:10,000
+that without the class extension.
+
+28
+00:01:10,000 --> 00:01:11,000
+That's it.
+
+29
+00:01:11,000 --> 00:01:12,000
+This is how you mention that.
+
+30
+00:01:12,000 --> 00:01:15,000
+I'm going to configure the internal view resolver,
+
+31
+00:01:15,000 --> 00:01:17,000
+but you have to set two properties.
+
+32
+00:01:17,000 --> 00:01:20,000
+The first is prefix and the second is suffix.
+
+33
+00:01:20,000 --> 00:01:23,000
+So properties, and again we have used the same thing.
+
+34
+00:01:23,000 --> 00:01:27,000
+If you remember prefix suffix, let's set that.
+
+35
+00:01:27,000 --> 00:01:29,000
+So property is prefix.
+
+36
+00:01:29,000 --> 00:01:31,000
+The value is slash views slash
+
+37
+00:01:31,000 --> 00:01:33,000
+because that's a folder I think.
+
+38
+00:01:33,000 --> 00:01:36,000
+Let's see, yeah, the folder name is views.
+
+39
+00:01:36,000 --> 00:01:40,000
+And next we have to mention the property,
+
+40
+00:01:40,000 --> 00:01:43,000
+which is the suffix, which is in this case is .gsp.
+
+41
+00:01:43,000 --> 00:01:44,000
+That's it.
+
+42
+00:01:44,000 --> 00:01:47,000
+That's how basically you configure things
+
+43
+00:01:47,000 --> 00:01:49,000
+and now you know the importance of Spring Boot, right?
+
+44
+00:01:49,000 --> 00:01:52,000
+How easy it is to do everything in Spring Boot.
+
+45
+00:01:52,000 --> 00:01:56,000
+So now after making the changes, let's reload
+
+46
+00:01:56,000 --> 00:01:58,000
+or relaunch the application.
+
+47
+00:01:58,000 --> 00:02:01,000
+Let's go back and refresh.
+
+48
+00:02:01,000 --> 00:02:03,000
+Oh, and this time we got a different error.
+
+49
+00:02:03,000 --> 00:02:04,000
+Good thing, right?
+
+50
+00:02:04,000 --> 00:02:05,000
+Every time we do something you get
+
+51
+00:02:05,000 --> 00:02:07,000
+different error, but it looks like I made a mistake.
+
+52
+00:02:07,000 --> 00:02:10,000
+Line number 20. Let's see, line number 20.
+
+53
+00:02:10,000 --> 00:02:14,000
+It says perfect property things are looking good.
+
+54
+00:02:14,000 --> 00:02:17,000
+What is wrong there? Oh, this is not how you do it.
+
+55
+00:02:17,000 --> 00:02:19,000
+I still went into a different way.
+
+56
+00:02:19,000 --> 00:02:20,000
+So I have to set the value.
+
+57
+00:02:20,000 --> 00:02:22,000
+Remember in Spring Boot we have talked about the values.
+
+58
+00:02:22,000 --> 00:02:25,000
+I will say slash views slash,
+
+59
+00:02:25,000 --> 00:02:27,000
+and this should be also value.jsp.
+
+60
+00:02:27,000 --> 00:02:30,000
+Sometime you just go with the intuitions, right?
+
+61
+00:02:30,000 --> 00:02:32,000
+And then it doesn't work. Anyway.
+
+62
+00:02:32,000 --> 00:02:35,000
+So you have to set the values like this, not in the bracket.
+
+63
+00:02:35,000 --> 00:02:39,000
+Let's relaunch and go back here, relaunch the application
+
+64
+00:02:39,000 --> 00:02:41,000
+and voila, we got our page.
+
+65
+00:02:41,000 --> 00:02:43,000
+So this is working, but let's see
+
+66
+00:02:43,000 --> 00:02:45,000
+if the actual output also works.
+
+67
+00:02:45,000 --> 00:02:48,000
+So I will say 121.
+
+68
+00:02:48,000 --> 00:02:51,000
+And here I will say, Navin, enter, submit. And you got it.
+
+69
+00:02:51,000 --> 00:02:53,000
+You got the output. Not exactly,
+
+70
+00:02:53,000 --> 00:02:55,000
+I mean we have not seen this problem before,
+
+71
+00:02:55,000 --> 00:02:57,000
+but you can see we are not getting the value.
+
+72
+00:02:57,000 --> 00:02:59,000
+We wanted the value, which is data
+
+73
+00:02:59,000 --> 00:03:01,000
+and we wanted it to print.
+
+74
+00:03:01,000 --> 00:03:03,000
+Welcome to the Java world. What is not working?
+
+75
+00:03:03,000 --> 00:03:06,000
+Let's go back to our code.
+
+76
+00:03:06,000 --> 00:03:08,000
+And if you go to the home controller,
+
+77
+00:03:08,000 --> 00:03:12,000
+if you can see we do have this alien object here
+
+78
+00:03:13,000 --> 00:03:15,000
+and we are returning the result page.
+
+79
+00:03:15,000 --> 00:03:17,000
+And we do have the course model attribute,
+
+80
+00:03:17,000 --> 00:03:18,000
+which returns Java.
+
+81
+00:03:18,000 --> 00:03:20,000
+So it should work, right? See, sometime
+
+82
+00:03:20,000 --> 00:03:23,000
+what happens is in your JSP because of some,
+
+83
+00:03:25,000 --> 00:03:27,000
+because of some support, JSTL might not work.
+
+84
+00:03:27,000 --> 00:03:29,000
+So if you go back to result page, you have
+
+85
+00:03:29,000 --> 00:03:33,000
+to add one more attribute here, which is isELIgnored.
+
+86
+00:03:33,000 --> 00:03:35,000
+So you have to make sure this is always false
+
+87
+00:03:35,000 --> 00:03:37,000
+and you have to put that in double quotes.
+
+88
+00:03:37,000 --> 00:03:39,000
+So sometime the expression language,
+
+89
+00:03:39,000 --> 00:03:41,000
+so this is called the expression language
+
+90
+00:03:41,000 --> 00:03:43,000
+and sometime your framework ignores it.
+
+91
+00:03:43,000 --> 00:03:46,000
+So you have to make sure that you say, Hey, don't ignore it,
+
+92
+00:03:46,000 --> 00:03:48,000
+convert this value and let's see if this works.
+
+93
+00:03:48,000 --> 00:03:53,000
+Let's go back to the output page refresh. And it worked.
+
+94
+00:03:53,000 --> 00:03:55,000
+So that's how basically it works.
+
+95
+00:03:55,000 --> 00:03:58,000
+And we were able to convert our project,
+
+96
+00:03:58,000 --> 00:04:01,000
+the entire project from Spring Boot
+
+97
+00:04:01,000 --> 00:04:03,000
+to normal spring MVC without using Spring Boot of course.
+
+98
+00:04:03,000 --> 00:04:08,000
+And we have done a lot of configuration.
+
+99
+00:04:08,000 --> 00:04:10,000
+So let's do a quick recap in the next video.
+
+100
+00:04:10,000 --> 00:04:11,000
+Whatever we have done, step by step so
+
+101
+00:04:11,000 --> 00:04:13,000
+that you will remember what to do when you want
+
+102
+00:04:13,000 --> 00:04:15,000
+to build a Spring MBC application.
+
diff --git a/13 - Exploring Web MVC without Spring Boot/006 Source-Code.url b/13 - Exploring Web MVC without Spring Boot/006 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..9487b58b603c6415f4930d4598ec4a91d31adbd8
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/006 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.6%20Internal%20Resource%20View%20Resolver
\ No newline at end of file
diff --git a/13 - Exploring Web MVC without Spring Boot/007 Summary_en.srt b/13 - Exploring Web MVC without Spring Boot/007 Summary_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..acf5c47a014aeff5ba5dd09d40b45509e8404281
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/007 Summary_en.srt	
@@ -0,0 +1,308 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: So let's do a quick recap of this app.
+
+3
+00:00:05,000 --> 00:00:07,000
+So what we have done is,
+
+4
+00:00:07,000 --> 00:00:08,000
+initially when you build this project,
+
+5
+00:00:08,000 --> 00:00:10,000
+you will get a Maven project.
+
+6
+00:00:10,000 --> 00:00:12,000
+You have to make sure that you add
+
+7
+00:00:12,000 --> 00:00:14,000
+this dependency for SpringMVC.
+
+8
+00:00:14,000 --> 00:00:17,000
+Now this is SpringMVC, not Spring Boot,
+
+9
+00:00:17,000 --> 00:00:19,000
+and the version I'm going for is 6.1.
+
+10
+00:00:19,000 --> 00:00:20,000
+Now. depending upon when you're watching this,
+
+11
+00:00:20,000 --> 00:00:22,000
+you can try out your own version.
+
+12
+00:00:22,000 --> 00:00:26,000
+And once we do this, we can create our controller.
+
+13
+00:00:26,000 --> 00:00:28,000
+So if you can see, I am creating a home controller here
+
+14
+00:00:28,000 --> 00:00:30,000
+in which I have different methods.
+
+15
+00:00:30,000 --> 00:00:32,000
+Of course, we are using annotations here for the mapping.
+
+16
+00:00:32,000 --> 00:00:34,000
+But then to make this work,
+
+17
+00:00:34,000 --> 00:00:37,000
+we have to make sure that you ask your Tomcat,
+
+18
+00:00:37,000 --> 00:00:40,000
+because Tomcat by default have no idea
+
+19
+00:00:40,000 --> 00:00:43,000
+that you are using a Spring project or SpringMVC project.
+
+20
+00:00:43,000 --> 00:00:45,000
+So you have to tell, "Hey, you know,
+
+21
+00:00:45,000 --> 00:00:47,000
+I want to use SpringMVC here."
+
+22
+00:00:47,000 --> 00:00:49,000
+And the first controller
+
+23
+00:00:49,000 --> 00:00:51,000
+or the first servlet you have to interact with
+
+24
+00:00:51,000 --> 00:00:53,000
+is a DispatcherServlet
+
+25
+00:00:53,000 --> 00:00:55,000
+which is given by the Spring Framework.
+
+26
+00:00:55,000 --> 00:00:59,000
+For all the requests, you have to call a DispatcherServlet.
+
+27
+00:00:59,000 --> 00:01:02,000
+That's what we are doing in the web.xml file.
+
+28
+00:01:02,000 --> 00:01:04,000
+Now, whom we are talking to using web.xml?
+
+29
+00:01:04,000 --> 00:01:05,000
+We are talking to Tomcat, okay?
+
+30
+00:01:05,000 --> 00:01:08,000
+So every file here is responsible for talking to something.
+
+31
+00:01:08,000 --> 00:01:11,000
+So web.xml is a way to talk to Tomcat.
+
+32
+00:01:11,000 --> 00:01:14,000
+And then when you call DispatcherServlet,
+
+33
+00:01:14,000 --> 00:01:15,000
+now DispatcherServlet has no idea
+
+34
+00:01:15,000 --> 00:01:16,000
+that you're using a controller.
+
+35
+00:01:16,000 --> 00:01:18,000
+Now, we have to talk to DispatcherServlet.
+
+36
+00:01:18,000 --> 00:01:21,000
+And the way you do that is using the DispatcherServlet name,
+
+37
+00:01:21,000 --> 00:01:24,000
+which is TELUSKO in this case, -servlet.xml.
+
+38
+00:01:24,000 --> 00:01:27,000
+This is our file which will be there in the WEB-INF folder.
+
+39
+00:01:27,000 --> 00:01:31,000
+In this, you have to mention that I am using annotations
+
+40
+00:01:31,000 --> 00:01:32,000
+using annotation-config.
+
+41
+00:01:32,000 --> 00:01:34,000
+And the package you will find all these classes
+
+42
+00:01:34,000 --> 00:01:36,000
+is com.telusko.
+
+43
+00:01:36,000 --> 00:01:38,000
+And then this basically knows that, hey,
+
+44
+00:01:38,000 --> 00:01:40,000
+I have to look at this controller,
+
+45
+00:01:40,000 --> 00:01:42,000
+I have to map it,
+
+46
+00:01:42,000 --> 00:01:44,000
+and then I have to call a particular page.
+
+47
+00:01:44,000 --> 00:01:46,000
+So like I'm calling the home method here,
+
+48
+00:01:46,000 --> 00:01:48,000
+which is calling "index".
+
+49
+00:01:48,000 --> 00:01:50,000
+So DispatcherServlet has no idea what "index" is.
+
+50
+00:01:50,000 --> 00:01:52,000
+So I have to mention the location of Index
+
+51
+00:01:52,000 --> 00:01:53,000
+and the extension.
+
+52
+00:01:53,000 --> 00:01:55,000
+The way you can do that
+
+53
+00:01:55,000 --> 00:01:57,000
+is with the help of Internal View Resolver,
+
+54
+00:01:57,000 --> 00:01:59,000
+which we have configured here.
+
+55
+00:01:59,000 --> 00:02:01,000
+So Internal Resource View Resolver.
+
+56
+00:02:01,000 --> 00:02:02,000
+In which you have to mention the prefix,
+
+57
+00:02:02,000 --> 00:02:04,000
+that means the location of the file,
+
+58
+00:02:04,000 --> 00:02:06,000
+and the extension for the file, which is suffix,
+
+59
+00:02:06,000 --> 00:02:08,000
+and that is your .jsp.
+
+60
+00:02:08,000 --> 00:02:11,000
+And that's how the entire project is working.
+
+61
+00:02:11,000 --> 00:02:13,000
+So again, you have to do this configuration,
+
+62
+00:02:13,000 --> 00:02:15,000
+but remember, for a big project,
+
+63
+00:02:15,000 --> 00:02:17,000
+you will do this configuration only once.
+
+64
+00:02:17,000 --> 00:02:20,000
+As you add more features, you have to do more configuration.
+
+65
+00:02:20,000 --> 00:02:21,000
+But again, remember,
+
+66
+00:02:21,000 --> 00:02:22,000
+you will do this configuration only once
+
+67
+00:02:22,000 --> 00:02:24,000
+for the entire project.
+
+68
+00:02:24,000 --> 00:02:26,000
+So is it worth building project in SpringMVC?
+
+69
+00:02:26,000 --> 00:02:28,000
+Yes, you get more controls.
+
+70
+00:02:28,000 --> 00:02:30,000
+And is it worth building project in Spring Boot?
+
+71
+00:02:30,000 --> 00:02:31,000
+Yes, if it will save your time.
+
+72
+00:02:31,000 --> 00:02:34,000
+So it depends upon what kind of project you're building.
+
+73
+00:02:34,000 --> 00:02:37,000
+I have seen projects also built in normal SpringMVC,
+
+74
+00:02:37,000 --> 00:02:38,000
+without Spring Boot.
+
+75
+00:02:38,000 --> 00:02:40,000
+But most of the projects are using Spring Boot.
+
+76
+00:02:40,000 --> 00:02:44,000
+So after this, we'll add some more features into Spring,
+
+77
+00:02:44,000 --> 00:02:46,000
+but with the help of Spring Boot.
+
diff --git a/13 - Exploring Web MVC without Spring Boot/external-links.txt b/13 - Exploring Web MVC without Spring Boot/external-links.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3e8ea7a70ad11de0dfe1db2d5bf4abcc467f293f
--- /dev/null
+++ b/13 - Exploring Web MVC without Spring Boot/external-links.txt	
@@ -0,0 +1,15 @@
+
+002 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.2%20Creating%20a%20Spring%20MVC%20Project_1
+
+003 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.3%20Running%20Tomcat%20in%20Eclipse
+
+004 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.4%20Dispatcher%20Servlet
+
+005 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.5%20Configuring%20the%20DispatcherServlet
+
+006 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/f1161e151ea06b68810b3cae03005d4955a96a8b/7%20Exploring%20Web%20MVC%20without%20Spring%20Boot/6.6%20Internal%20Resource%20View%20Resolver
diff --git a/14 - Building a Project/001 Building Job App_en.srt b/14 - Building a Project/001 Building Job App_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..ff40137c26f4c5613f7c78e2086b048f3b3b640b
--- /dev/null
+++ b/14 - Building a Project/001 Building Job App_en.srt	
@@ -0,0 +1,296 @@
+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:04,000
+-: With whatever we have learned 'til now,
+
+3
+00:00:04,000 --> 00:00:07,000
+basically we have talked about Spring, Spring Boot,
+
+4
+00:00:07,000 --> 00:00:09,000
+and we also know how do you build a web application
+
+5
+00:00:09,000 --> 00:00:10,000
+with the help of Spring framework.
+
+6
+00:00:10,000 --> 00:00:12,000
+Now, when you talk about web application
+
+7
+00:00:12,000 --> 00:00:15,000
+and if you try to build a view
+
+8
+00:00:15,000 --> 00:00:16,000
+inside your Spring project as well,
+
+9
+00:00:16,000 --> 00:00:18,000
+we can do that with the help of JSP.
+
+10
+00:00:18,000 --> 00:00:20,000
+And that's what we have done 'til now, right?
+
+11
+00:00:20,000 --> 00:00:22,000
+Now on that, let's build an application.
+
+12
+00:00:22,000 --> 00:00:25,000
+Now what we are building, we are building a job application,
+
+13
+00:00:25,000 --> 00:00:27,000
+or you can say a job portal,
+
+14
+00:00:27,000 --> 00:00:29,000
+where people can, or companies can post
+
+15
+00:00:29,000 --> 00:00:31,000
+about a particular job.
+
+16
+00:00:31,000 --> 00:00:35,000
+And then as a job seeker, you can search for a job.
+
+17
+00:00:35,000 --> 00:00:37,000
+So this is what we are building here.
+
+18
+00:00:37,000 --> 00:00:38,000
+So let's say if you are searching for a job
+
+19
+00:00:38,000 --> 00:00:40,000
+and then you want to see
+
+20
+00:00:40,000 --> 00:00:41,000
+what are the different jobs available,
+
+21
+00:00:41,000 --> 00:00:43,000
+or the the requirements,
+
+22
+00:00:43,000 --> 00:00:45,000
+you can simply click on View All Jobs here.
+
+23
+00:00:45,000 --> 00:00:48,000
+And this will list the number of jobs available.
+
+24
+00:00:48,000 --> 00:00:51,000
+You can see they're looking for Java developers
+
+25
+00:00:51,000 --> 00:00:53,000
+with the experience in core Java, advanced Java,
+
+26
+00:00:53,000 --> 00:00:56,000
+experience two years, and then the tech stack.
+
+27
+00:00:56,000 --> 00:00:58,000
+Then we have front developer, three years.
+
+28
+00:00:58,000 --> 00:01:02,000
+Now all these are just data which we randomly inserted,
+
+29
+00:01:02,000 --> 00:01:03,000
+but it doesn't matter, right?
+
+30
+00:01:03,000 --> 00:01:04,000
+We got this data here,
+
+31
+00:01:04,000 --> 00:01:07,000
+and now if you want to apply for a job,
+
+32
+00:01:07,000 --> 00:01:08,000
+you can see a particular thing.
+
+33
+00:01:08,000 --> 00:01:09,000
+And of course there should be a button here
+
+34
+00:01:09,000 --> 00:01:10,000
+for applying a job.
+
+35
+00:01:10,000 --> 00:01:12,000
+And also there should be a company name.
+
+36
+00:01:12,000 --> 00:01:13,000
+But just to keep it simple,
+
+37
+00:01:13,000 --> 00:01:15,000
+we went for these different profiles here.
+
+38
+00:01:15,000 --> 00:01:16,000
+That's one.
+
+39
+00:01:16,000 --> 00:01:20,000
+Next, what if you are an employer,
+
+40
+00:01:20,000 --> 00:01:21,000
+and you want to post about a job?
+
+41
+00:01:21,000 --> 00:01:22,000
+So you can click on this Add Job
+
+42
+00:01:22,000 --> 00:01:24,000
+and you can post a requirement.
+
+43
+00:01:24,000 --> 00:01:26,000
+Of course this should be auto-generated,
+
+44
+00:01:26,000 --> 00:01:27,000
+but at this point,
+
+45
+00:01:27,000 --> 00:01:29,000
+let's say we have some hardware values there,
+
+46
+00:01:29,000 --> 00:01:30,000
+and then we have a post profile.
+
+47
+00:01:30,000 --> 00:01:35,000
+Let's say we are looking for a Spring dev
+
+48
+00:01:35,000 --> 00:01:36,000
+and some requirement,
+
+49
+00:01:36,000 --> 00:01:38,000
+let's say experience of one year in Spring.
+
+50
+00:01:38,000 --> 00:01:42,000
+And I want the person to know Java,
+
+51
+00:01:42,000 --> 00:01:44,000
+and there should be Spring as well here.
+
+52
+00:01:44,000 --> 00:01:45,000
+And I'm not able to find.
+
+53
+00:01:45,000 --> 00:01:47,000
+Let's say I want someone who knows Java and TypeScript.
+
+54
+00:01:47,000 --> 00:01:49,000
+I will click on Submit and we got an error.
+
+55
+00:01:49,000 --> 00:01:52,000
+Not expected, but it should bring something, right?
+
+56
+00:01:52,000 --> 00:01:54,000
+So there's something wrong with the code.
+
+57
+00:01:54,000 --> 00:01:55,000
+Again, we'll figure it out, and we'll make it work,
+
+58
+00:01:55,000 --> 00:01:57,000
+but it should add the job.
+
+59
+00:01:57,000 --> 00:01:59,000
+And when you go back to View All Jobs,
+
+60
+00:01:59,000 --> 00:02:00,000
+of course it should be there, right?
+
+61
+00:02:00,000 --> 00:02:02,000
+This is what we want to build now.
+
+62
+00:02:02,000 --> 00:02:04,000
+It's not complete, and that's why we got the error.
+
+63
+00:02:04,000 --> 00:02:05,000
+But let's build this.
+
+64
+00:02:05,000 --> 00:02:07,000
+Now, how we are going to start this?
+
+65
+00:02:07,000 --> 00:02:09,000
+Of course, we don't want to focus on the views here
+
+66
+00:02:09,000 --> 00:02:11,000
+because there are a lot of CSS involved here.
+
+67
+00:02:11,000 --> 00:02:13,000
+So I have the view theories.
+
+68
+00:02:13,000 --> 00:02:15,000
+We want to build the backend, okay?
+
+69
+00:02:15,000 --> 00:02:17,000
+So in the next video I will show you
+
+70
+00:02:17,000 --> 00:02:19,000
+how we have built that view.
+
+71
+00:02:19,000 --> 00:02:20,000
+In fact, we'll create the project first,
+
+72
+00:02:20,000 --> 00:02:23,000
+and then we'll add some views which I've already created,
+
+73
+00:02:23,000 --> 00:02:25,000
+and we'll see how those views looks like.
+
+74
+00:02:25,000 --> 00:02:28,000
+And then we'll start coding the Java part of it.
+
diff --git a/14 - Building a Project/002 Creating a Project_en.srt b/14 - Building a Project/002 Creating a Project_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..3447e42a9e7dc038cf444ac904aafd09270bf7d3
--- /dev/null
+++ b/14 - Building a Project/002 Creating a Project_en.srt	
@@ -0,0 +1,508 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:04,000
+-: So let's create a project now.
+
+3
+00:00:04,000 --> 00:00:06,000
+Now, how do we create a project in Spring?
+
+4
+00:00:06,000 --> 00:00:08,000
+Of course, we are building a Spring Boot project.
+
+5
+00:00:08,000 --> 00:00:09,000
+And if you're using the community version
+
+6
+00:00:09,000 --> 00:00:10,000
+of IntelliJ IDEA,
+
+7
+00:00:10,000 --> 00:00:13,000
+we have to use the start.spring.io,
+
+8
+00:00:13,000 --> 00:00:15,000
+which is the Spring Initializr.
+
+9
+00:00:15,000 --> 00:00:17,000
+So what I will do is I will just create,
+
+10
+00:00:17,000 --> 00:00:18,000
+I will just go to a new tab
+
+11
+00:00:18,000 --> 00:00:21,000
+and I will go to the start.spring.io
+
+12
+00:00:21,000 --> 00:00:22,000
+and let's create a project.
+
+13
+00:00:22,000 --> 00:00:24,000
+So I want to create a Maven project,
+
+14
+00:00:24,000 --> 00:00:27,000
+and the language is Java, the snapshot version is this.
+
+15
+00:00:27,000 --> 00:00:29,000
+So while we're making this video,
+
+16
+00:00:29,000 --> 00:00:31,000
+we got a new sub version, which is 3.2.1.
+
+17
+00:00:32,000 --> 00:00:33,000
+Let's use that.
+
+18
+00:00:33,000 --> 00:00:36,000
+And then this should become score.
+
+19
+00:00:36,000 --> 00:00:39,000
+The artifact is I'm making a job app.
+
+20
+00:00:39,000 --> 00:00:42,000
+And okay, let's skip it as it is.
+
+21
+00:00:42,000 --> 00:00:44,000
+I'm using the version Java21.
+
+22
+00:00:44,000 --> 00:00:46,000
+Okay, now what are the dependencies we have to add?
+
+23
+00:00:46,000 --> 00:00:48,000
+So the first dependency I want to add is spring web,
+
+24
+00:00:48,000 --> 00:00:50,000
+because that's what we're building, web application.
+
+25
+00:00:50,000 --> 00:00:53,000
+And next I want to also use Lombok.
+
+26
+00:00:53,000 --> 00:00:56,000
+Now again, once we start coding, I will talk about Lombok.
+
+27
+00:00:56,000 --> 00:00:57,000
+What is Lombok?
+
+28
+00:00:57,000 --> 00:00:59,000
+So Lombok basically helps reduce the number of lines
+
+29
+00:00:59,000 --> 00:01:00,000
+you write in your code.
+
+30
+00:01:00,000 --> 00:01:01,000
+Okay, how?
+
+31
+00:01:01,000 --> 00:01:02,000
+We'll see that in some time,
+
+32
+00:01:02,000 --> 00:01:05,000
+but we have added two libraries here, or two dependencies.
+
+33
+00:01:05,000 --> 00:01:08,000
+One is Spring Web and second is Lombok.
+
+34
+00:01:08,000 --> 00:01:11,000
+After doing these changes, click on generate
+
+35
+00:01:11,000 --> 00:01:15,000
+and okay, allow, it'll download the project
+
+36
+00:01:15,000 --> 00:01:16,000
+and you can see I got it.
+
+37
+00:01:16,000 --> 00:01:17,000
+I have to unzip it
+
+38
+00:01:17,000 --> 00:01:21,000
+and open that in IntelliJ IDEA committee version.
+
+39
+00:01:21,000 --> 00:01:24,000
+So I will open this, let me open my IntelliJ IDEA
+
+40
+00:01:24,000 --> 00:01:25,000
+and open this project.
+
+41
+00:01:25,000 --> 00:01:27,000
+And here we go.
+
+42
+00:01:27,000 --> 00:01:28,000
+So I'm opening this project, which is,
+
+43
+00:01:28,000 --> 00:01:30,000
+you can see we have a job app here.
+
+44
+00:01:30,000 --> 00:01:33,000
+And now if you look at your palm.xml,
+
+45
+00:01:33,000 --> 00:01:35,000
+we got two dependencies here.
+
+46
+00:01:35,000 --> 00:01:38,000
+One is Spring Startup Web and Lombok.
+
+47
+00:01:38,000 --> 00:01:40,000
+Also, we have a test library if you want to use it.
+
+48
+00:01:40,000 --> 00:01:42,000
+But we got two, which is which you're going to use now.
+
+49
+00:01:42,000 --> 00:01:45,000
+Okay, now, apart from this, since we are going to use JSP,
+
+50
+00:01:45,000 --> 00:01:47,000
+and then in JSP, we are going to use JSTL.
+
+51
+00:01:47,000 --> 00:01:50,000
+I will show you what JSP I'm talking about.
+
+52
+00:01:50,000 --> 00:01:53,000
+And to make it work, we have to add two more dependencies.
+
+53
+00:01:53,000 --> 00:01:54,000
+In fact, three dependencies.
+
+54
+00:01:54,000 --> 00:01:57,000
+Remember when we use JSP, we have to also use Jasper,
+
+55
+00:01:57,000 --> 00:01:58,000
+remember?
+
+56
+00:01:58,000 --> 00:02:00,000
+So instead of going to Maven repository,
+
+57
+00:02:00,000 --> 00:02:02,000
+I do have those dependencies with me.
+
+58
+00:02:02,000 --> 00:02:03,000
+I'll just paste it here.
+
+59
+00:02:03,000 --> 00:02:05,000
+Now these are the dependency you need.
+
+60
+00:02:05,000 --> 00:02:08,000
+So basically we need Jasper to convert your JSP pages.
+
+61
+00:02:08,000 --> 00:02:10,000
+We need JST API because
+
+62
+00:02:10,000 --> 00:02:14,000
+after Tomcat 10, we went from Java X to Jakarta.
+
+63
+00:02:14,000 --> 00:02:17,000
+So we'll be using that and the JSP library.
+
+64
+00:02:17,000 --> 00:02:18,000
+So basically we need this two
+
+65
+00:02:18,000 --> 00:02:22,000
+and we need Jasper to convert JSV pages
+
+66
+00:02:22,000 --> 00:02:24,000
+and we need to reduce number lines.
+
+67
+00:02:24,000 --> 00:02:26,000
+And of course, Spring Start.
+
+68
+00:02:26,000 --> 00:02:29,000
+Now, once you have all this dependency,
+
+69
+00:02:29,000 --> 00:02:30,000
+that's our first step.
+
+70
+00:02:30,000 --> 00:02:33,000
+The next step is to get the views here.
+
+71
+00:02:33,000 --> 00:02:35,000
+Now, where you will put the views,
+
+72
+00:02:35,000 --> 00:02:37,000
+you will open your SRC inside main folder,
+
+73
+00:02:37,000 --> 00:02:40,000
+you will create a folder inside main.
+
+74
+00:02:40,000 --> 00:02:43,000
+And for web, we have to create a folder
+
+75
+00:02:43,000 --> 00:02:45,000
+called web app, that's done.
+
+76
+00:02:45,000 --> 00:02:48,000
+And in this web app, I want to put my views.
+
+77
+00:02:48,000 --> 00:02:51,000
+So I'll be using CSS files here.
+
+78
+00:02:51,000 --> 00:02:54,000
+So in the web app, I want views and CSS.
+
+79
+00:02:54,000 --> 00:02:56,000
+So you'll get all the files in the project resources,
+
+80
+00:02:56,000 --> 00:02:57,000
+you will get there.
+
+81
+00:02:57,000 --> 00:03:00,000
+So you have an option here. I mean you have views here.
+
+82
+00:03:00,000 --> 00:03:02,000
+And you can see we have multiple views.
+
+83
+00:03:02,000 --> 00:03:06,000
+In fact, I don't need JSP, Index.jsp, I can delete that.
+
+84
+00:03:07,000 --> 00:03:11,000
+I only need this folder, Add Job Home success.
+
+85
+00:03:11,000 --> 00:03:13,000
+Are we even using success?
+
+86
+00:03:15,000 --> 00:03:18,000
+Yeah, we got success and we got View All Jobs.
+
+87
+00:03:18,000 --> 00:03:20,000
+Now, which page does what?
+
+88
+00:03:20,000 --> 00:03:21,000
+Now if you want the homepage,
+
+89
+00:03:21,000 --> 00:03:24,000
+remember when we talked about the homepage,
+
+90
+00:03:24,000 --> 00:03:25,000
+I'm talking about this page here.
+
+91
+00:03:25,000 --> 00:03:27,000
+So when we talk about this homepage,
+
+92
+00:03:27,000 --> 00:03:30,000
+this is your homepage here, which is this.
+
+93
+00:03:30,000 --> 00:03:32,000
+Next, if you want to view all the jobs,
+
+94
+00:03:32,000 --> 00:03:34,000
+this is this view all jobs.
+
+95
+00:03:34,000 --> 00:03:39,000
+And if you want this add job for this, we have a page,
+
+96
+00:03:39,000 --> 00:03:40,000
+which is add job.
+
+97
+00:03:40,000 --> 00:03:42,000
+And once you add a particular job.
+
+98
+00:03:42,000 --> 00:03:43,000
+So last time it was not working,
+
+99
+00:03:43,000 --> 00:03:45,000
+so let me just try once again,
+
+100
+00:03:45,000 --> 00:03:47,000
+there was small bug which I resolved.
+
+101
+00:03:47,000 --> 00:03:49,000
+And again, we'll talk about that bug in some time.
+
+102
+00:03:49,000 --> 00:03:50,000
+And then pros profile.
+
+103
+00:03:50,000 --> 00:03:53,000
+Let's say I want to hire a React developer,
+
+104
+00:03:53,000 --> 00:03:56,000
+and then some description doesn't matter nowadays
+
+105
+00:03:56,000 --> 00:03:58,000
+because people are in their own way.
+
+106
+00:03:58,000 --> 00:04:01,000
+Let's say I'm looking for years experience one,
+
+107
+00:04:01,000 --> 00:04:03,000
+I want someone who knows TypeScript
+
+108
+00:04:03,000 --> 00:04:05,000
+and JavaScript and also React.
+
+109
+00:04:05,000 --> 00:04:06,000
+But I think it'll take some time for me
+
+110
+00:04:06,000 --> 00:04:10,000
+to search React here, not React native to you, anyway.
+
+111
+00:04:10,000 --> 00:04:13,000
+Let's say we have TypeScript in JavaScript, click on submit
+
+112
+00:04:13,000 --> 00:04:15,000
+and you can see this is the page we want.
+
+113
+00:04:15,000 --> 00:04:19,000
+So React developer, some description, experience one year.
+
+114
+00:04:19,000 --> 00:04:23,000
+And Tech Stack needs is JavaScript and TypeScript both.
+
+115
+00:04:23,000 --> 00:04:25,000
+And if you click on, so this is the success page, okay,
+
+116
+00:04:25,000 --> 00:04:28,000
+so this is what we want here.
+
+117
+00:04:28,000 --> 00:04:30,000
+And then if I click on All Jobs, it should be there.
+
+118
+00:04:30,000 --> 00:04:32,000
+So you can see we got React developer,
+
+119
+00:04:32,000 --> 00:04:35,000
+this is what we want to build, right?
+
+120
+00:04:35,000 --> 00:04:38,000
+And for that, we got all these views here,
+
+121
+00:04:38,000 --> 00:04:40,000
+but then none of this view will actually work
+
+122
+00:04:40,000 --> 00:04:43,000
+because I mean, of course we do have a view there,
+
+123
+00:04:43,000 --> 00:04:45,000
+but we have to build a backend.
+
+124
+00:04:45,000 --> 00:04:47,000
+But before we build a backend, I want to show you the code
+
+125
+00:04:47,000 --> 00:04:50,000
+inside this to show you what we really trying to build
+
+126
+00:04:50,000 --> 00:04:53,000
+and what should be the backend for it.
+
+127
+00:04:53,000 --> 00:04:55,000
+So we'll see that in the next video.
+
diff --git a/14 - Building a Project/002 Source-Code.url b/14 - Building a Project/002 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..7e04a22f1e5caf33ffb7f668c9099f00c6aa7c14
--- /dev/null
+++ b/14 - Building a Project/002 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/main/7%20JobApp-Project
\ No newline at end of file
diff --git a/14 - Building a Project/003 Understanding Views_en.srt b/14 - Building a Project/003 Understanding Views_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..1dfc51d557f837c5e644ed9bd0eab3aeef2fba3e
--- /dev/null
+++ b/14 - Building a Project/003 Understanding Views_en.srt	
@@ -0,0 +1,576 @@
+1
+00:00:00,000 --> 00:00:03,000
+(soft music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: Now let's understand these pages here.
+
+3
+00:00:05,000 --> 00:00:07,000
+So initially I will go for the homepage.
+
+4
+00:00:07,000 --> 00:00:09,000
+Now what we want in homepage is very simple.
+
+5
+00:00:09,000 --> 00:00:10,000
+Let me just show you the homepage.
+
+6
+00:00:10,000 --> 00:00:13,000
+So basically we want this, all this text on the top.
+
+7
+00:00:13,000 --> 00:00:14,000
+Again, not a big fan of views,
+
+8
+00:00:14,000 --> 00:00:16,000
+but let's say we have this top screen here
+
+9
+00:00:16,000 --> 00:00:19,000
+and let me just close that spring initialize.
+
+10
+00:00:19,000 --> 00:00:22,000
+Okay, and then in this, I want two tabs here.
+
+11
+00:00:22,000 --> 00:00:26,000
+One for view all jobs and second on add jobs.
+
+12
+00:00:26,000 --> 00:00:29,000
+So basically I need two links to call those URLs.
+
+13
+00:00:29,000 --> 00:00:31,000
+And the way I have done that is this.
+
+14
+00:00:31,000 --> 00:00:33,000
+So in this view, basically you can see
+
+15
+00:00:33,000 --> 00:00:36,000
+there are lot of things, but we are using some bootstraps
+
+16
+00:00:36,000 --> 00:00:38,000
+so that it'll look beautiful
+
+17
+00:00:38,000 --> 00:00:40,000
+and some external settings in our CSS.
+
+18
+00:00:40,000 --> 00:00:42,000
+But important thing is not views,
+
+19
+00:00:42,000 --> 00:00:44,000
+but the way we are calling them.
+
+20
+00:00:44,000 --> 00:00:46,000
+So you can see we have two links here.
+
+21
+00:00:46,000 --> 00:00:49,000
+One for the homepage, in fact that's for the navigation bar.
+
+22
+00:00:49,000 --> 00:00:51,000
+We got home, we got view all jobs,
+
+23
+00:00:51,000 --> 00:00:54,000
+and we are also visiting the homepage of Telusko
+
+24
+00:00:54,000 --> 00:00:57,000
+using contact and okay,
+
+25
+00:00:57,000 --> 00:00:59,000
+but this is the thing which I want.
+
+26
+00:00:59,000 --> 00:01:01,000
+So those two buttons are because of this view all jobs,
+
+27
+00:01:01,000 --> 00:01:03,000
+this is a URL we are hitting.
+
+28
+00:01:03,000 --> 00:01:05,000
+So when I click on view all jobs,
+
+29
+00:01:05,000 --> 00:01:07,000
+this is a URL.
+
+30
+00:01:07,000 --> 00:01:10,000
+For add job this is a URL.
+
+31
+00:01:10,000 --> 00:01:11,000
+So we have to map it for two things,
+
+32
+00:01:11,000 --> 00:01:15,000
+/view all jobs and /add job.
+
+33
+00:01:15,000 --> 00:01:19,000
+And also if you observe when you go to the homepage,
+
+34
+00:01:19,000 --> 00:01:23,000
+so let's say if I run the homepage, it shows the same page.
+
+35
+00:01:23,000 --> 00:01:25,000
+When I click on home, again, it shows the same page
+
+36
+00:01:25,000 --> 00:01:30,000
+because we got two URLs hitting the same page, right?
+
+37
+00:01:30,000 --> 00:01:32,000
+So have to do the mapping for that as well.
+
+38
+00:01:32,000 --> 00:01:35,000
+So basically you have to map four URLs now.
+
+39
+00:01:35,000 --> 00:01:39,000
+Add job, view all jobs, homepage, and /home.
+
+40
+00:01:39,000 --> 00:01:40,000
+So four.
+
+41
+00:01:40,000 --> 00:01:41,000
+In fact, we also need success, right?
+
+42
+00:01:41,000 --> 00:01:44,000
+If you remember, we also have one more page called success
+
+43
+00:01:44,000 --> 00:01:46,000
+and we'll see how do we call success there.
+
+44
+00:01:46,000 --> 00:01:47,000
+But at this point we are editing.
+
+45
+00:01:47,000 --> 00:01:51,000
+So in total we have to hit 5, 4, one is the redaction.
+
+46
+00:01:51,000 --> 00:01:53,000
+But yeah, four URLs
+
+47
+00:01:53,000 --> 00:01:56,000
+and anything else if I want to view all jobs,
+
+48
+00:01:56,000 --> 00:01:58,000
+because this will be stored somewhere, right?
+
+49
+00:01:58,000 --> 00:02:00,000
+Of course we are not using database here,
+
+50
+00:02:00,000 --> 00:02:02,000
+but slowly we'll move to a database as well.
+
+51
+00:02:02,000 --> 00:02:03,000
+Now this project becomes important
+
+52
+00:02:03,000 --> 00:02:05,000
+because once we move forward,
+
+53
+00:02:05,000 --> 00:02:08,000
+we'll talk about how do we use Spring web
+
+54
+00:02:08,000 --> 00:02:10,000
+with the React front end.
+
+55
+00:02:10,000 --> 00:02:13,000
+So we'll convert the entire project into React front end,
+
+56
+00:02:13,000 --> 00:02:15,000
+which will use separate application,
+
+57
+00:02:15,000 --> 00:02:16,000
+which will hit your server.
+
+58
+00:02:16,000 --> 00:02:19,000
+And then a server will not be responding with the pages.
+
+59
+00:02:19,000 --> 00:02:22,000
+A server will respond with JSON data and that will be fancy.
+
+60
+00:02:22,000 --> 00:02:26,000
+And then if you see here, what we have done is, again,
+
+61
+00:02:26,000 --> 00:02:28,000
+these are all the nav bar.
+
+62
+00:02:28,000 --> 00:02:31,000
+This is where we are actually printing data.
+
+63
+00:02:31,000 --> 00:02:33,000
+So whatever data you're getting printed here,
+
+64
+00:02:33,000 --> 00:02:34,000
+so if I click on view jobs,
+
+65
+00:02:34,000 --> 00:02:36,000
+all this data which is getting printed here
+
+66
+00:02:36,000 --> 00:02:39,000
+is because of this particular tags here.
+
+67
+00:02:39,000 --> 00:02:43,000
+So example, the first thing, which is the Java developer,
+
+68
+00:02:43,000 --> 00:02:44,000
+how this is coming,
+
+69
+00:02:44,000 --> 00:02:47,000
+it is coming because of this post profile.
+
+70
+00:02:47,000 --> 00:02:50,000
+This is one of the variable in the class.
+
+71
+00:02:50,000 --> 00:02:53,000
+And if you see we are running a for loop.
+
+72
+00:02:53,000 --> 00:02:56,000
+Now basically I'm not focusing more on JSPs
+
+73
+00:02:56,000 --> 00:02:58,000
+because the front technology,
+
+74
+00:02:58,000 --> 00:03:00,000
+the view technology will keep changing.
+
+75
+00:03:00,000 --> 00:03:01,000
+Even if you're learning Spring,
+
+76
+00:03:01,000 --> 00:03:04,000
+you might want to use some different view technologies.
+
+77
+00:03:04,000 --> 00:03:05,000
+So this specific to JSP,
+
+78
+00:03:05,000 --> 00:03:07,000
+and that's what we're not focusing on that,
+
+79
+00:03:07,000 --> 00:03:11,000
+but you can basically use forEach, which is a loop,
+
+80
+00:03:11,000 --> 00:03:14,000
+which it trades for an array here
+
+81
+00:03:14,000 --> 00:03:16,000
+and it'll pick up one by one.
+
+82
+00:03:16,000 --> 00:03:18,000
+So whatever data you have in the array
+
+83
+00:03:18,000 --> 00:03:21,000
+it'll pick up the first element.
+
+84
+00:03:21,000 --> 00:03:23,000
+It'll get all the value from the element.
+
+85
+00:03:23,000 --> 00:03:25,000
+You can see I'm fetching post profile,
+
+86
+00:03:25,000 --> 00:03:27,000
+I'm fetching post description,
+
+87
+00:03:27,000 --> 00:03:29,000
+I'm fetching required experience,
+
+88
+00:03:29,000 --> 00:03:32,000
+I'm fetching the tech stack, which is itself
+
+89
+00:03:32,000 --> 00:03:34,000
+is a array, right?
+
+90
+00:03:34,000 --> 00:03:37,000
+So you can see again we are using a forEach here
+
+91
+00:03:37,000 --> 00:03:39,000
+to fetch each tech stack.
+
+92
+00:03:39,000 --> 00:03:40,000
+That's what we are doing here.
+
+93
+00:03:40,000 --> 00:03:43,000
+You can see we have multiple tech stack, not just one.
+
+94
+00:03:43,000 --> 00:03:44,000
+So that's what we are doing here
+
+95
+00:03:44,000 --> 00:03:46,000
+and that's what we are able to fetch.
+
+96
+00:03:46,000 --> 00:03:48,000
+But then not once, depending upon how many elements
+
+97
+00:03:48,000 --> 00:03:49,000
+you have in the array
+
+98
+00:03:49,000 --> 00:03:52,000
+that many time it will basically run the loop.
+
+99
+00:03:52,000 --> 00:03:53,000
+In the add job,
+
+100
+00:03:53,000 --> 00:03:54,000
+we have a simple form here.
+
+101
+00:03:54,000 --> 00:03:57,000
+You can see we got a form.
+
+102
+00:03:57,000 --> 00:03:59,000
+This is a form.
+
+103
+00:03:59,000 --> 00:04:00,000
+There is a form, yeah, this is a form.
+
+104
+00:04:00,000 --> 00:04:03,000
+And the URL is handle form.
+
+105
+00:04:03,000 --> 00:04:06,000
+So basically we got five URLs to handle now,
+
+106
+00:04:06,000 --> 00:04:08,000
+and then we are sending a POST request.
+
+107
+00:04:08,000 --> 00:04:10,000
+Now when you say in HTTP
+
+108
+00:04:10,000 --> 00:04:11,000
+we have different types of methods.
+
+109
+00:04:11,000 --> 00:04:13,000
+At this point let's discuss only two.
+
+110
+00:04:13,000 --> 00:04:15,000
+So when you want to get data from the server,
+
+111
+00:04:15,000 --> 00:04:16,000
+we use a GET request
+
+112
+00:04:16,000 --> 00:04:19,000
+and by default all the requests are GET.
+
+113
+00:04:19,000 --> 00:04:20,000
+But if you want to submit data,
+
+114
+00:04:20,000 --> 00:04:22,000
+we have to use a POST request.
+
+115
+00:04:22,000 --> 00:04:24,000
+It's not like you cannot use GET here,
+
+116
+00:04:24,000 --> 00:04:27,000
+it's just that when you use a GET request in the URL,
+
+117
+00:04:27,000 --> 00:04:28,000
+you will get all the values.
+
+118
+00:04:28,000 --> 00:04:29,000
+We don't want that.
+
+119
+00:04:29,000 --> 00:04:30,000
+We want to send a POST request
+
+120
+00:04:30,000 --> 00:04:33,000
+where the URL should not show the data.
+
+121
+00:04:33,000 --> 00:04:36,000
+Imagine you're sending a password, okay, let's not do that.
+
+122
+00:04:36,000 --> 00:04:38,000
+Okay, so we have all this data here you can see
+
+123
+00:04:38,000 --> 00:04:40,000
+we are asking for the POST ID.
+
+124
+00:04:40,000 --> 00:04:44,000
+We are asking for POST profile, POST description,
+
+125
+00:04:44,000 --> 00:04:46,000
+required experience and tech stack.
+
+126
+00:04:46,000 --> 00:04:48,000
+And you can see we have a list of tech stack there.
+
+127
+00:04:48,000 --> 00:04:50,000
+And that's why we have all these options here.
+
+128
+00:04:50,000 --> 00:04:52,000
+It's huge.
+
+129
+00:04:52,000 --> 00:04:55,000
+My team has done that, searched all this tech stack.
+
+130
+00:04:55,000 --> 00:04:57,000
+I'm not sure how long it is, but it doesn't matter.
+
+131
+00:04:57,000 --> 00:04:59,000
+We have quite a huge tech stack here.
+
+132
+00:04:59,000 --> 00:05:02,000
+And yeah, some script for bootstrap.
+
+133
+00:05:02,000 --> 00:05:04,000
+Okay, so this is what the add job is.
+
+134
+00:05:04,000 --> 00:05:06,000
+The home is, we have talked about home.
+
+135
+00:05:06,000 --> 00:05:10,000
+Success since we only adding one POST at a time
+
+136
+00:05:10,000 --> 00:05:14,000
+in the success page, you just want to see one POST.
+
+137
+00:05:14,000 --> 00:05:16,000
+And that's why you can see we are only fetching
+
+138
+00:05:16,000 --> 00:05:20,000
+one POST here, not a loop, a simple get profile
+
+139
+00:05:20,000 --> 00:05:23,000
+and get tech stack and all the stuff.
+
+140
+00:05:23,000 --> 00:05:24,000
+Nothing fancy.
+
+141
+00:05:24,000 --> 00:05:25,000
+We're just fetching here.
+
+142
+00:05:25,000 --> 00:05:27,000
+But none of this will work
+
+143
+00:05:27,000 --> 00:05:29,000
+because we have not created the controller.
+
+144
+00:05:29,000 --> 00:05:30,000
+Okay, let's do that in the next video.
+
diff --git a/14 - Building a Project/004 Home and AddJob Controller_en.srt b/14 - Building a Project/004 Home and AddJob Controller_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..868d6caa50675daf62ee4b83b05b96ee8f33c11b
--- /dev/null
+++ b/14 - Building a Project/004 Home and AddJob Controller_en.srt	
@@ -0,0 +1,588 @@
+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: So it's time to build the backend of it.
+
+3
+00:00:05,000 --> 00:00:07,000
+Basically, I'm talking about the controllers,
+
+4
+00:00:07,000 --> 00:00:09,000
+the service class, and the model class.
+
+5
+00:00:09,000 --> 00:00:11,000
+And also we need repo.
+
+6
+00:00:11,000 --> 00:00:12,000
+We are not going to connect with the database,
+
+7
+00:00:12,000 --> 00:00:14,000
+but at least let's have the repo layer.
+
+8
+00:00:14,000 --> 00:00:16,000
+Maybe in future, if you want to connect into a database,
+
+9
+00:00:16,000 --> 00:00:17,000
+how will you do it?
+
+10
+00:00:17,000 --> 00:00:18,000
+So let's have that repo layer ready
+
+11
+00:00:18,000 --> 00:00:20,000
+and then we can start working.
+
+12
+00:00:20,000 --> 00:00:22,000
+Okay, there's one more thing I want to do here
+
+13
+00:00:22,000 --> 00:00:24,000
+is I wanna make sure that the properties are set
+
+14
+00:00:24,000 --> 00:00:26,000
+in the application properties.
+
+15
+00:00:26,000 --> 00:00:29,000
+Now what I'm talking about is if you go to the sources,
+
+16
+00:00:29,000 --> 00:00:31,000
+we do have application dot properties,
+
+17
+00:00:31,000 --> 00:00:33,000
+and this is where we have to send two things,
+
+18
+00:00:33,000 --> 00:00:35,000
+the prefix and suffix.
+
+19
+00:00:35,000 --> 00:00:38,000
+So I can just use that from the previous project.
+
+20
+00:00:38,000 --> 00:00:39,000
+We have done this before, right?
+
+21
+00:00:39,000 --> 00:00:40,000
+So I'm just studying the properties,
+
+22
+00:00:40,000 --> 00:00:42,000
+which is views and dot jsp,
+
+23
+00:00:42,000 --> 00:00:44,000
+because my views are in the views folder.
+
+24
+00:00:44,000 --> 00:00:45,000
+That's done.
+
+25
+00:00:45,000 --> 00:00:47,000
+Now let's, we'll not be touching this file again,
+
+26
+00:00:47,000 --> 00:00:48,000
+so let me close it.
+
+27
+00:00:48,000 --> 00:00:49,000
+I think I've made some changes in the admin,
+
+28
+00:00:49,000 --> 00:00:52,000
+so let me just reload the changes.
+
+29
+00:00:52,000 --> 00:00:54,000
+Maybe have done that in the last video.
+
+30
+00:00:54,000 --> 00:00:55,000
+Let me just check that once.
+
+31
+00:00:55,000 --> 00:00:56,000
+Okay, looks good.
+
+32
+00:00:56,000 --> 00:00:59,000
+So now let's start with the Java part here.
+
+33
+00:00:59,000 --> 00:01:02,000
+So if you see we do have only one file, which is your main,
+
+34
+00:01:02,000 --> 00:01:03,000
+and we will not touching this.
+
+35
+00:01:03,000 --> 00:01:05,000
+We have to create controllers, the first step, right?
+
+36
+00:01:05,000 --> 00:01:09,000
+So let's create a controller here and we'll say Java class.
+
+37
+00:01:09,000 --> 00:01:11,000
+Now we'll say this is job controller, okay.
+
+38
+00:01:11,000 --> 00:01:13,000
+Now, if you want this to be a controller,
+
+39
+00:01:13,000 --> 00:01:17,000
+you have to use annotation, which is controller.
+
+40
+00:01:17,000 --> 00:01:17,000
+That's the first thing.
+
+41
+00:01:17,000 --> 00:01:19,000
+And now we have to do the mapping, right?
+
+42
+00:01:19,000 --> 00:01:22,000
+Remember we have talked about the five different mappings
+
+43
+00:01:22,000 --> 00:01:23,000
+which you have to do.
+
+44
+00:01:23,000 --> 00:01:25,000
+And we have start step by step.
+
+45
+00:01:25,000 --> 00:01:27,000
+Let's work with the home, okay?
+
+46
+00:01:27,000 --> 00:01:29,000
+So if you wanna make sure that when you call home
+
+47
+00:01:29,000 --> 00:01:33,000
+or slash home, or you said simply the homepage,
+
+48
+00:01:33,000 --> 00:01:34,000
+it should call the same page, okay?
+
+49
+00:01:34,000 --> 00:01:36,000
+So that's the first thing we want to do.
+
+50
+00:01:36,000 --> 00:01:38,000
+So for that, what you're going to do
+
+51
+00:01:38,000 --> 00:01:40,000
+is you are going to create a method which is public wide,
+
+52
+00:01:40,000 --> 00:01:42,000
+in fact, not wide, public string,
+
+53
+00:01:42,000 --> 00:01:43,000
+because we wanna return the name of the page,
+
+54
+00:01:43,000 --> 00:01:46,000
+and let's call this as home, okay?
+
+55
+00:01:46,000 --> 00:01:49,000
+And in this, we are going to return the page name,
+
+56
+00:01:49,000 --> 00:01:50,000
+and what's the page name here?
+
+57
+00:01:50,000 --> 00:01:52,000
+So the page is home dot jsp.
+
+58
+00:01:52,000 --> 00:01:55,000
+I will just return home, our job is done,
+
+59
+00:01:55,000 --> 00:01:56,000
+but then we have to do the mapping as well, right?
+
+60
+00:01:56,000 --> 00:01:58,000
+Now what mapping have to do?
+
+61
+00:01:58,000 --> 00:02:01,000
+Of course, I will say request mapping here, and in bracket.
+
+62
+00:02:01,000 --> 00:02:03,000
+Now it's not just one URL, right?
+
+63
+00:02:03,000 --> 00:02:06,000
+So example, if you just want to make it for homepage,
+
+64
+00:02:06,000 --> 00:02:07,000
+you can simply say slash,
+
+65
+00:02:07,000 --> 00:02:09,000
+but I want this to work for two URLs,
+
+66
+00:02:09,000 --> 00:02:12,000
+slash and home as well.
+
+67
+00:02:12,000 --> 00:02:14,000
+So in that case, what I will do is I will just put that
+
+68
+00:02:14,000 --> 00:02:18,000
+in as an alley, and the next one is home.
+
+69
+00:02:18,000 --> 00:02:20,000
+So this method will be called for both request.
+
+70
+00:02:20,000 --> 00:02:24,000
+So slash and when you click on home button on the page,
+
+71
+00:02:24,000 --> 00:02:26,000
+it will be hitting this URL.
+
+72
+00:02:26,000 --> 00:02:29,000
+So for both, we are calling the homepage, okay?
+
+73
+00:02:29,000 --> 00:02:30,000
+That's what we are doing.
+
+74
+00:02:30,000 --> 00:02:32,000
+So let's see if that works.
+
+75
+00:02:32,000 --> 00:02:36,000
+I will just go back to my application and run this.
+
+76
+00:02:36,000 --> 00:02:37,000
+I hope this will work.
+
+77
+00:02:37,000 --> 00:02:38,000
+Okay, Tomcat started.
+
+78
+00:02:38,000 --> 00:02:40,000
+It's time to open the browser.
+
+79
+00:02:40,000 --> 00:02:42,000
+Okay, this was the earlier thing.
+
+80
+00:02:42,000 --> 00:02:44,000
+Let's hit that URL once again.
+
+81
+00:02:44,000 --> 00:02:45,000
+Loading, okay, so we got the homepage, right?
+
+82
+00:02:45,000 --> 00:02:46,000
+That's awesome.
+
+83
+00:02:46,000 --> 00:02:49,000
+But if I try to say view all pages not working
+
+84
+00:02:49,000 --> 00:02:50,000
+because we have not done the mapping yet,
+
+85
+00:02:50,000 --> 00:02:53,000
+add job not working, but the homepage is working.
+
+86
+00:02:53,000 --> 00:02:56,000
+If I click on home again, it's working,
+
+87
+00:02:56,000 --> 00:02:58,000
+but if you see the URL, it is slash home.
+
+88
+00:02:58,000 --> 00:03:00,000
+So both for both the URL,
+
+89
+00:03:00,000 --> 00:03:04,000
+if you say slash home or just the website homepage,
+
+90
+00:03:04,000 --> 00:03:06,000
+you get the things working out.
+
+91
+00:03:06,000 --> 00:03:08,000
+So we got the same, we got the first page.
+
+92
+00:03:08,000 --> 00:03:10,000
+I want the contact to work.
+
+93
+00:03:10,000 --> 00:03:12,000
+It will work because we are referring
+
+94
+00:03:12,000 --> 00:03:15,000
+to the external website, which there is called homepage.
+
+95
+00:03:15,000 --> 00:03:16,000
+This is working fine,
+
+96
+00:03:16,000 --> 00:03:19,000
+but if I click on all jobs, not working.
+
+97
+00:03:19,000 --> 00:03:21,000
+So this is what we need to work now.
+
+98
+00:03:21,000 --> 00:03:23,000
+Okay, let's go back to the Java project,
+
+99
+00:03:23,000 --> 00:03:25,000
+and let's go back to the homepage or the controller.
+
+100
+00:03:25,000 --> 00:03:30,000
+Okay, so now let's do the mapping for add job, okay?
+
+101
+00:03:30,000 --> 00:03:34,000
+So I will say public string add.
+
+102
+00:03:34,000 --> 00:03:37,000
+So someone, if someone calls for the add job request,
+
+103
+00:03:37,000 --> 00:03:39,000
+so when you click on the add job, it should,
+
+104
+00:03:39,000 --> 00:03:41,000
+it should call the add job page, right?
+
+105
+00:03:41,000 --> 00:03:44,000
+So I will say simply return, add job,
+
+106
+00:03:44,000 --> 00:03:46,000
+and let's do the mapping for this.
+
+107
+00:03:46,000 --> 00:03:49,000
+This should be mapping for request mapping.
+
+108
+00:03:49,000 --> 00:03:51,000
+Now what's the URL is heading?
+
+109
+00:03:51,000 --> 00:03:54,000
+So if you go back here, click on add job, look at the URL.
+
+110
+00:03:54,000 --> 00:03:59,000
+It says local 8080 slash add job, okay?
+
+111
+00:03:59,000 --> 00:04:01,000
+So that's what we need to refer here,
+
+112
+00:04:01,000 --> 00:04:02,000
+add job, that's it.
+
+113
+00:04:02,000 --> 00:04:04,000
+This should look, this looks good.
+
+114
+00:04:04,000 --> 00:04:06,000
+Let's see if that works.
+
+115
+00:04:06,000 --> 00:04:08,000
+Let's restart the application and go back here.
+
+116
+00:04:08,000 --> 00:04:09,000
+Let's refresh.
+
+117
+00:04:09,000 --> 00:04:11,000
+Still not working.
+
+118
+00:04:11,000 --> 00:04:13,000
+Okay, so let's see what went wrong.
+
+119
+00:04:13,000 --> 00:04:17,000
+So when I click on add job, is it doing something?
+
+120
+00:04:17,000 --> 00:04:18,000
+Let me just check.
+
+121
+00:04:18,000 --> 00:04:21,000
+So maybe it is calling the add job.
+
+122
+00:04:21,000 --> 00:04:22,000
+Oh, the page is wrong.
+
+123
+00:04:22,000 --> 00:04:23,000
+It is add job.
+
+124
+00:04:23,000 --> 00:04:25,000
+It's not capital, my bad.
+
+125
+00:04:25,000 --> 00:04:26,000
+And let's refresh.
+
+126
+00:04:26,000 --> 00:04:28,000
+Okay, it worked.
+
+127
+00:04:28,000 --> 00:04:29,000
+So let me go back to homepage again.
+
+128
+00:04:29,000 --> 00:04:31,000
+And when I click on add job, so we got this page, right?
+
+129
+00:04:31,000 --> 00:04:36,000
+And now if I click on some data, so when I say post 101,
+
+130
+00:04:36,000 --> 00:04:40,000
+I'm adding a profile here, which is let's say, Java dev,
+
+131
+00:04:40,000 --> 00:04:43,000
+and then some post, some experience,
+
+132
+00:04:43,000 --> 00:04:45,000
+and let's say only Java, click on Submit.
+
+133
+00:04:45,000 --> 00:04:46,000
+Oh, it's not working.
+
+134
+00:04:46,000 --> 00:04:47,000
+You know why it's not working?
+
+135
+00:04:47,000 --> 00:04:50,000
+Because when you click on that page,
+
+136
+00:04:50,000 --> 00:04:52,000
+because this page is getting called, right?
+
+137
+00:04:52,000 --> 00:04:55,000
+In this page, when you click on Submit,
+
+138
+00:04:55,000 --> 00:04:57,000
+so let's look at the form tag.
+
+139
+00:04:57,000 --> 00:05:00,000
+You are basically calling the handle form.
+
+140
+00:05:00,000 --> 00:05:03,000
+So when you click on Submit, you're calling a handle form
+
+141
+00:05:03,000 --> 00:05:06,000
+and we are not doing anything to handle this form, okay?
+
+142
+00:05:06,000 --> 00:05:08,000
+So let's do that in the next video.
+
+143
+00:05:08,000 --> 00:05:09,000
+How do we handle the form?
+
+144
+00:05:09,000 --> 00:05:12,000
+Because this is where we have to work with the post request.
+
+145
+00:05:12,000 --> 00:05:13,000
+Now this is new.
+
+146
+00:05:13,000 --> 00:05:15,000
+We have worked with the get request, but not post.
+
+147
+00:05:15,000 --> 00:05:16,000
+Let's say that in the next video.
+
diff --git a/14 - Building a Project/005 Handling Form_en.srt b/14 - Building a Project/005 Handling Form_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..46f0d891cc5104b30bb8ef72e67ba20583712cd0
--- /dev/null
+++ b/14 - Building a Project/005 Handling Form_en.srt	
@@ -0,0 +1,760 @@
+1
+00:00:00,000 --> 00:00:03,000
+(upbeat music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: Okay, so let's work with the form handling now.
+
+3
+00:00:05,000 --> 00:00:08,000
+So basically we are sending a form here, right?
+
+4
+00:00:08,000 --> 00:00:10,000
+So this is not normal HTML form in which you have certain
+
+5
+00:00:10,000 --> 00:00:12,000
+fields and when you click on submit,
+
+6
+00:00:12,000 --> 00:00:15,000
+and we are sending a post request now.
+
+7
+00:00:15,000 --> 00:00:17,000
+So to handle the post request, let's go back
+
+8
+00:00:17,000 --> 00:00:21,000
+to the job controller and let's create a method.
+
+9
+00:00:21,000 --> 00:00:23,000
+I will say public string
+
+10
+00:00:23,000 --> 00:00:26,000
+and let's maintain this as handle form.
+
+11
+00:00:26,000 --> 00:00:27,000
+Okay, now what is a URL?
+
+12
+00:00:27,000 --> 00:00:29,000
+So we have to say request mapping,
+
+13
+00:00:29,000 --> 00:00:34,000
+and then in the bracket we have to mention the request,
+
+14
+00:00:34,000 --> 00:00:36,000
+which is handle form.
+
+15
+00:00:36,000 --> 00:00:39,000
+I think it is small, let's verify, no, it's capital.
+
+16
+00:00:39,000 --> 00:00:41,000
+Let's go with capital.
+
+17
+00:00:42,000 --> 00:00:44,000
+Okay, so we are handling the form now
+
+18
+00:00:44,000 --> 00:00:47,000
+and here we have to basically return the page,
+
+19
+00:00:47,000 --> 00:00:48,000
+which is success.jsp.
+
+20
+00:00:48,000 --> 00:00:51,000
+So let's return success, okay, but will it really work?
+
+21
+00:00:51,000 --> 00:00:54,000
+Let's try, so what I will do is I will just relaunch this
+
+22
+00:00:54,000 --> 00:00:58,000
+and go back here, refresh, send.
+
+23
+00:00:58,000 --> 00:01:01,000
+Okay, let's go back to the homepage again.
+
+24
+00:01:01,000 --> 00:01:02,000
+So let's click on submit now
+
+25
+00:01:02,000 --> 00:01:04,000
+and you can see it's not working,
+
+26
+00:01:04,000 --> 00:01:08,000
+but this time you're not getting 404, we are getting 500.
+
+27
+00:01:08,000 --> 00:01:11,000
+So something worked and something doesn't.
+
+28
+00:01:11,000 --> 00:01:12,000
+So let's see what worked.
+
+29
+00:01:12,000 --> 00:01:15,000
+If you see it is trying to call the success page.
+
+30
+00:01:15,000 --> 00:01:19,000
+If you go back here or is it really calling success page?
+
+31
+00:01:19,000 --> 00:01:22,000
+Let's see what's there though, okay, it says it's trying
+
+32
+00:01:22,000 --> 00:01:24,000
+to call the success page.
+
+33
+00:01:24,000 --> 00:01:25,000
+So nothing went wrong there.
+
+34
+00:01:25,000 --> 00:01:27,000
+It's calling the success page,
+
+35
+00:01:27,000 --> 00:01:31,000
+but it is not able to find, it cannot resolve the job post.
+
+36
+00:01:31,000 --> 00:01:32,000
+What is this job post?
+
+37
+00:01:32,000 --> 00:01:34,000
+Let's go back to success page
+
+38
+00:01:34,000 --> 00:01:36,000
+and let's see what is job post here.
+
+39
+00:01:36,000 --> 00:01:37,000
+Now job post,
+
+40
+00:01:37,000 --> 00:01:39,000
+if you see have written a Java coin inside this.
+
+41
+00:01:39,000 --> 00:01:41,000
+So job post is basically a class
+
+42
+00:01:41,000 --> 00:01:43,000
+and we don't have that class.
+
+43
+00:01:43,000 --> 00:01:44,000
+So basically it's a model.
+
+44
+00:01:44,000 --> 00:01:46,000
+So what are the things we need in job post?
+
+45
+00:01:46,000 --> 00:01:49,000
+Now basically whatever you are entering in your
+
+46
+00:01:49,000 --> 00:01:52,000
+page here, everything.
+
+47
+00:01:52,000 --> 00:01:55,000
+So I need ID, I need profile, I need description,
+
+48
+00:01:55,000 --> 00:01:57,000
+I need required experience, I need tech stack.
+
+49
+00:01:57,000 --> 00:01:59,000
+And tech stack is not one, we have multiple.
+
+50
+00:01:59,000 --> 00:02:03,000
+So we basically we have to use array or at least.
+
+51
+00:02:03,000 --> 00:02:06,000
+So let's see, so I have to create a page.
+
+52
+00:02:06,000 --> 00:02:07,000
+So we'll just create a package here.
+
+53
+00:02:07,000 --> 00:02:12,000
+And this is for the, okay, so we'll say job post,
+
+54
+00:02:12,000 --> 00:02:16,000
+but this should be a part of a package called model.
+
+55
+00:02:16,000 --> 00:02:18,000
+Of course you can keep everything in one file,
+
+56
+00:02:18,000 --> 00:02:21,000
+but it makes sense to our different package.
+
+57
+00:02:21,000 --> 00:02:22,000
+So job post,
+
+58
+00:02:25,000 --> 00:02:26,000
+move to package.
+
+59
+00:02:26,000 --> 00:02:28,000
+Yeah, so you can say we got a model package now in which we
+
+60
+00:02:28,000 --> 00:02:31,000
+have job post, what are the things we need in job post?
+
+61
+00:02:31,000 --> 00:02:35,000
+So basically I need the post ID, the post profile,
+
+62
+00:02:35,000 --> 00:02:37,000
+the post description required experience
+
+63
+00:02:37,000 --> 00:02:40,000
+and the list of tech stack.
+
+64
+00:02:40,000 --> 00:02:43,000
+Okay, so basically I need these five variables
+
+65
+00:02:43,000 --> 00:02:44,000
+to make it work because this is
+
+66
+00:02:44,000 --> 00:02:46,000
+what you are sending from a form
+
+67
+00:02:46,000 --> 00:02:49,000
+and you want to display that in the success.
+
+68
+00:02:49,000 --> 00:02:51,000
+Now the thing is for these five variables, I need to work
+
+69
+00:02:51,000 --> 00:02:53,000
+with getters and setters.
+
+70
+00:02:53,000 --> 00:02:55,000
+But don't you think the getter setters
+
+71
+00:02:55,000 --> 00:02:57,000
+should be something which Java should give you?
+
+72
+00:02:57,000 --> 00:03:00,000
+See the thing is, when you create a variable
+
+73
+00:03:00,000 --> 00:03:01,000
+private, you have to need datasets.
+
+74
+00:03:01,000 --> 00:03:03,000
+You also need toString method
+
+75
+00:03:03,000 --> 00:03:06,000
+and that's where we have added one of the dependency.
+
+76
+00:03:06,000 --> 00:03:08,000
+If you go to your pom.xml,
+
+77
+00:03:08,000 --> 00:03:10,000
+we have added something called Lombok.
+
+78
+00:03:10,000 --> 00:03:12,000
+Now Lombok will basically help you
+
+79
+00:03:12,000 --> 00:03:15,000
+to reduce the number of lines of code.
+
+80
+00:03:15,000 --> 00:03:17,000
+So what you can basically do is you can mention
+
+81
+00:03:17,000 --> 00:03:20,000
+that this is a data class, so you don't have
+
+82
+00:03:20,000 --> 00:03:22,000
+to create getter setters for this.
+
+83
+00:03:22,000 --> 00:03:24,000
+Also, if you need constructor, I need a default constructor,
+
+84
+00:03:24,000 --> 00:03:27,000
+I need a constructor for all the arguments,
+
+85
+00:03:27,000 --> 00:03:29,000
+you can simply use this annotations there.
+
+86
+00:03:29,000 --> 00:03:31,000
+So basically by using these annotations,
+
+87
+00:03:31,000 --> 00:03:33,000
+what you're doing is you are making sure that you don't need
+
+88
+00:03:33,000 --> 00:03:36,000
+to create all the getter setters
+
+89
+00:03:36,000 --> 00:03:38,000
+and toString method, the hash code method,
+
+90
+00:03:38,000 --> 00:03:40,000
+everything will be taken gear by this data class here
+
+91
+00:03:40,000 --> 00:03:44,000
+if you want constructor, these two annotations are required
+
+92
+00:03:44,000 --> 00:03:46,000
+for a default constructor
+
+93
+00:03:46,000 --> 00:03:48,000
+and a constructor, which will take all the parameters,
+
+94
+00:03:48,000 --> 00:03:50,000
+but also since we're using spring, so we have
+
+95
+00:03:50,000 --> 00:03:51,000
+to also make this component
+
+96
+00:03:51,000 --> 00:03:55,000
+because I want to use it in the other classes.
+
+97
+00:03:55,000 --> 00:03:57,000
+So that's one, that's it, this is the class we need.
+
+98
+00:03:57,000 --> 00:03:59,000
+Now success page should work, right?
+
+99
+00:03:59,000 --> 00:04:02,000
+Because we do have that class now.
+
+100
+00:04:02,000 --> 00:04:03,000
+Let's see if that works.
+
+101
+00:04:03,000 --> 00:04:05,000
+Let's relaunch, so when you use Lombok, basically it'll
+
+102
+00:04:05,000 --> 00:04:08,000
+ask you to enable the annotation processing
+
+103
+00:04:08,000 --> 00:04:09,000
+and we have enabled that now.
+
+104
+00:04:09,000 --> 00:04:13,000
+Let's go back here, click on submit,
+
+105
+00:04:13,000 --> 00:04:14,000
+something is happening again, we got the error,
+
+106
+00:04:14,000 --> 00:04:16,000
+but this time the error should be different.
+
+107
+00:04:16,000 --> 00:04:18,000
+Let's see what the error is.
+
+108
+00:04:18,000 --> 00:04:21,000
+Okay, so it says job post cannot be resolved to a type.
+
+109
+00:04:21,000 --> 00:04:24,000
+Is it the same problem before?
+
+110
+00:04:24,000 --> 00:04:26,000
+So the error is not very specific,
+
+111
+00:04:26,000 --> 00:04:27,000
+but let's solve the problem one by one.
+
+112
+00:04:27,000 --> 00:04:31,000
+So what we got here is, you know, in the JSP,
+
+113
+00:04:31,000 --> 00:04:32,000
+basically we are expecting
+
+114
+00:04:32,000 --> 00:04:35,000
+that from the controller you will be sending this data
+
+115
+00:04:35,000 --> 00:04:38,000
+because in the controller you are basically
+
+116
+00:04:38,000 --> 00:04:40,000
+accepting the value.
+
+117
+00:04:40,000 --> 00:04:43,000
+So if you are, see here we have handle form,
+
+118
+00:04:43,000 --> 00:04:45,000
+you have to basically accept those values.
+
+119
+00:04:45,000 --> 00:04:48,000
+We are not doing it, and one of one more problem is
+
+120
+00:04:48,000 --> 00:04:49,000
+that the request mapping
+
+121
+00:04:49,000 --> 00:04:51,000
+by default goes for the get request.
+
+122
+00:04:51,000 --> 00:04:53,000
+Remember we talked about the get request and post request.
+
+123
+00:04:53,000 --> 00:04:56,000
+So we use get to fetch data, we use post to submit data.
+
+124
+00:04:56,000 --> 00:05:00,000
+So if you want to use post here, so you have to mention
+
+125
+00:05:00,000 --> 00:05:02,000
+that the method which we are using here is post.
+
+126
+00:05:02,000 --> 00:05:04,000
+Otherwise, what you can also do is instead
+
+127
+00:05:04,000 --> 00:05:07,000
+of using request mapping, you can use post mapping.
+
+128
+00:05:07,000 --> 00:05:09,000
+What it does is it says we are doing
+
+129
+00:05:09,000 --> 00:05:11,000
+the mapping for the post method.
+
+130
+00:05:11,000 --> 00:05:12,000
+So instead of using request
+
+131
+00:05:12,000 --> 00:05:13,000
+mapping, then specify the method.
+
+132
+00:05:13,000 --> 00:05:15,000
+You can also use post mapping.
+
+133
+00:05:15,000 --> 00:05:18,000
+That means here, instead of using request mapping,
+
+134
+00:05:18,000 --> 00:05:21,000
+we can say get mapping, let's import the package.
+
+135
+00:05:21,000 --> 00:05:23,000
+So from now basically we'll be focusing on get mapping
+
+136
+00:05:23,000 --> 00:05:26,000
+and post mapping, not request mapping.
+
+137
+00:05:26,000 --> 00:05:29,000
+Okay, so when you have a get method, get mapping, post map,
+
+138
+00:05:29,000 --> 00:05:31,000
+post method, post mapping.
+
+139
+00:05:31,000 --> 00:05:33,000
+Now since you are sending data,
+
+140
+00:05:33,000 --> 00:05:34,000
+we have to also accept it, right?
+
+141
+00:05:34,000 --> 00:05:35,000
+And we have seen that before, right?
+
+142
+00:05:35,000 --> 00:05:39,000
+If you just want to accept, just create the job post object,
+
+143
+00:05:39,000 --> 00:05:42,000
+which is let's say job post and your job is done.
+
+144
+00:05:42,000 --> 00:05:44,000
+That's it, so let's verify the success page.
+
+145
+00:05:44,000 --> 00:05:47,000
+Once again, we want the job post
+
+146
+00:05:48,000 --> 00:05:50,000
+and then we got the request dot get attribute.
+
+147
+00:05:50,000 --> 00:05:53,000
+We can also use JSP here, which we were using before,
+
+148
+00:05:53,000 --> 00:05:55,000
+but if you want to use java code we can also do that.
+
+149
+00:05:55,000 --> 00:05:57,000
+So request dot, get attribute job post.
+
+150
+00:05:57,000 --> 00:05:59,000
+And that's what we are signing here.
+
+151
+00:05:59,000 --> 00:06:00,000
+This time I think it should work
+
+152
+00:06:00,000 --> 00:06:02,000
+or maybe we'll get some of different error.
+
+153
+00:06:02,000 --> 00:06:04,000
+Okay, let's see the output page.
+
+154
+00:06:04,000 --> 00:06:06,000
+Let's go back here and click on submit.
+
+155
+00:06:06,000 --> 00:06:08,000
+Okay, again, we got 500.
+
+156
+00:06:08,000 --> 00:06:10,000
+I'm just expecting different editor this time.
+
+157
+00:06:10,000 --> 00:06:12,000
+You know what, let me just clear this.
+
+158
+00:06:12,000 --> 00:06:15,000
+I'm not sure if it is coming from the earlier letter.
+
+159
+00:06:15,000 --> 00:06:18,000
+Let's refresh, resend the data and go back here.
+
+160
+00:06:18,000 --> 00:06:20,000
+Okay, it's not able to find job post.
+
+161
+00:06:20,000 --> 00:06:22,000
+Are we importing the right package?
+
+162
+00:06:22,000 --> 00:06:25,000
+No, we are importing the wrong package.
+
+163
+00:06:25,000 --> 00:06:26,000
+So the project name is not this,
+
+164
+00:06:26,000 --> 00:06:28,000
+this is my idea project name.
+
+165
+00:06:28,000 --> 00:06:33,000
+The package is com.telusko.jobapp, also verify this.
+
+166
+00:06:35,000 --> 00:06:37,000
+When you get this project, make sure that you match it.
+
+167
+00:06:37,000 --> 00:06:40,000
+You are matching with everything which is mentioned here
+
+168
+00:06:41,000 --> 00:06:46,000
+and let's see if that works now, okay, so it worked.
+
+169
+00:06:46,000 --> 00:06:48,000
+So you can see we got the post.
+
+170
+00:06:48,000 --> 00:06:49,000
+The error was because
+
+171
+00:06:49,000 --> 00:06:51,000
+of this package import, which we were doing.
+
+172
+00:06:51,000 --> 00:06:55,000
+So we are able to get the data from the user request
+
+173
+00:06:55,000 --> 00:06:59,000
+to the controller and the data which you are sending is
+
+174
+00:06:59,000 --> 00:07:01,000
+getting stored in this job post object.
+
+175
+00:07:01,000 --> 00:07:05,000
+And then the same object we are using in the JSP.
+
+176
+00:07:05,000 --> 00:07:10,000
+So if you can see, we are basically fetching this object
+
+177
+00:07:10,000 --> 00:07:13,000
+and that data we are printing in this HTML tags
+
+178
+00:07:13,000 --> 00:07:16,000
+and that's why you got this data here.
+
+179
+00:07:16,000 --> 00:07:17,000
+Okay, this is what we have done, right?
+
+180
+00:07:17,000 --> 00:07:21,000
+Java dev description one year and Java here.
+
+181
+00:07:21,000 --> 00:07:24,000
+So that's how basically we can use the post mapping.
+
+182
+00:07:24,000 --> 00:07:26,000
+Now we have few more example.
+
+183
+00:07:26,000 --> 00:07:29,000
+We have to make sure that this all jobs work.
+
+184
+00:07:29,000 --> 00:07:31,000
+And also is it really saving
+
+185
+00:07:31,000 --> 00:07:33,000
+because when you say add job,
+
+186
+00:07:33,000 --> 00:07:35,000
+is it really saving the data somewhere?
+
+187
+00:07:35,000 --> 00:07:37,000
+Because once you go back you will not
+
+188
+00:07:37,000 --> 00:07:38,000
+get the same page again, right?
+
+189
+00:07:38,000 --> 00:07:40,000
+View jobs will not be having it.
+
+190
+00:07:40,000 --> 00:07:42,000
+So let's try to solve that in the next video.
+
diff --git a/14 - Building a Project/006 Working with Layers_en.srt b/14 - Building a Project/006 Working with Layers_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..9cfbc9c7cf56bcaf769ce0c688eef9134a52ff93
--- /dev/null
+++ b/14 - Building a Project/006 Working with Layers_en.srt	
@@ -0,0 +1,848 @@
+1
+00:00:00,000 --> 00:00:03,000
+(bright calm piano music)
+
+2
+00:00:03,000 --> 00:00:04,000
+-: Now, basically, to this point,
+
+3
+00:00:04,000 --> 00:00:09,000
+we were able to add the data in the add post or add job
+
+4
+00:00:09,000 --> 00:00:12,000
+and then we were able to get that on the success page.
+
+5
+00:00:12,000 --> 00:00:14,000
+Just to confirm that if I refer to the homepage
+
+6
+00:00:14,000 --> 00:00:16,000
+and if I click on add job
+
+7
+00:00:16,000 --> 00:00:19,000
+and whatever data you insert here, so I'm writing this too,
+
+8
+00:00:19,000 --> 00:00:22,000
+I will click on submit, you are getting data here,
+
+9
+00:00:22,000 --> 00:00:25,000
+but then this is not actually getting added somewhere.
+
+10
+00:00:25,000 --> 00:00:26,000
+As I mentioned before,
+
+11
+00:00:26,000 --> 00:00:28,000
+we are not going to use database here,
+
+12
+00:00:28,000 --> 00:00:30,000
+but still I want to store this data somewhere maybe
+
+13
+00:00:30,000 --> 00:00:32,000
+in the array or added list.
+
+14
+00:00:32,000 --> 00:00:35,000
+So let's store this data in the added list.
+
+15
+00:00:35,000 --> 00:00:37,000
+But how we are going to do that?
+
+16
+00:00:37,000 --> 00:00:39,000
+See, the thing is if you ask your controller
+
+17
+00:00:39,000 --> 00:00:41,000
+to save the data, controller will say,
+
+18
+00:00:41,000 --> 00:00:42,000
+that's not my job, right?
+
+19
+00:00:42,000 --> 00:00:45,000
+Normally, when you want to do some processing
+
+20
+00:00:45,000 --> 00:00:47,000
+or if you want to store data somewhere,
+
+21
+00:00:47,000 --> 00:00:48,000
+it is not the job of a controller.
+
+22
+00:00:48,000 --> 00:00:50,000
+For this, we have different layers.
+
+23
+00:00:50,000 --> 00:00:52,000
+Now, one of the layer where controller talks
+
+24
+00:00:52,000 --> 00:00:53,000
+to is your service layer.
+
+25
+00:00:53,000 --> 00:00:56,000
+So what I will do is I will just right click here
+
+26
+00:00:56,000 --> 00:01:00,000
+and create a new class which is your job service,
+
+27
+00:01:00,000 --> 00:01:02,000
+and this will be in a different package.
+
+28
+00:01:02,000 --> 00:01:05,000
+Let's say, we are putting that in a service package, okay?
+
+29
+00:01:05,000 --> 00:01:07,000
+And, of course, we don't have this package here,
+
+30
+00:01:07,000 --> 00:01:09,000
+so let me create one.
+
+31
+00:01:09,000 --> 00:01:10,000
+So you can see we got a service package here
+
+32
+00:01:10,000 --> 00:01:13,000
+in which you got a class called job service.
+
+33
+00:01:13,000 --> 00:01:17,000
+Now, in this, basically I need two methods.
+
+34
+00:01:17,000 --> 00:01:21,000
+One to view data and one to add data, okay?
+
+35
+00:01:21,000 --> 00:01:22,000
+And so, let's say we have the method
+
+36
+00:01:22,000 --> 00:01:25,000
+which is public void addJob.
+
+37
+00:01:26,000 --> 00:01:27,000
+That's one of the methods we have.
+
+38
+00:01:27,000 --> 00:01:31,000
+And then, we'll need one more, which is public,
+
+39
+00:01:31,000 --> 00:01:34,000
+which will return the least of job posts,
+
+40
+00:01:34,000 --> 00:01:37,000
+not just one with the least of job posts.
+
+41
+00:01:37,000 --> 00:01:38,000
+We have to input the package.
+
+42
+00:01:39,000 --> 00:01:43,000
+And let's say this is get all jobs.
+
+43
+00:01:43,000 --> 00:01:44,000
+Again, this method doesn't matter,
+
+44
+00:01:44,000 --> 00:01:46,000
+but let's say we have get all jobs.
+
+45
+00:01:46,000 --> 00:01:49,000
+And here I want to return a list, right?
+
+46
+00:01:49,000 --> 00:01:51,000
+Now, basically this job of service is
+
+47
+00:01:51,000 --> 00:01:52,000
+to do any processing,
+
+48
+00:01:52,000 --> 00:01:55,000
+but what if you want to fetch data from somewhere,
+
+49
+00:01:55,000 --> 00:01:57,000
+maybe database or some other server?
+
+50
+00:01:57,000 --> 00:02:00,000
+In that case, it's not the job of service layer.
+
+51
+00:02:00,000 --> 00:02:02,000
+So here, we have to use one more class
+
+52
+00:02:02,000 --> 00:02:04,000
+or one more layer which is your repository.
+
+53
+00:02:04,000 --> 00:02:06,000
+So we'll just right click here
+
+54
+00:02:06,000 --> 00:02:09,000
+and say class, this is my JobRepo.
+
+55
+00:02:10,000 --> 00:02:12,000
+And then this should be in different package.
+
+56
+00:02:12,000 --> 00:02:16,000
+This should be in say, let's say .repo package.
+
+57
+00:02:16,000 --> 00:02:19,000
+And, of course, I have to move this to a repo package.
+
+58
+00:02:19,000 --> 00:02:21,000
+I will just say, move and click.
+
+59
+00:02:21,000 --> 00:02:23,000
+So you can see we have different classes
+
+60
+00:02:23,000 --> 00:02:23,000
+in different packages now.
+
+61
+00:02:23,000 --> 00:02:26,000
+We got one in model which is job post.
+
+62
+00:02:26,000 --> 00:02:28,000
+We got repo which is job repo.
+
+63
+00:02:28,000 --> 00:02:30,000
+And then we got job service.
+
+64
+00:02:30,000 --> 00:02:32,000
+Now, it is a job of the job repo,
+
+65
+00:02:32,000 --> 00:02:34,000
+basically to have the elements.
+
+66
+00:02:34,000 --> 00:02:36,000
+Of course, I'm not using the database here,
+
+67
+00:02:36,000 --> 00:02:39,000
+so we'll have all my data in this part class. okay?
+
+68
+00:02:39,000 --> 00:02:42,000
+So maybe we can say this is mocking,
+
+69
+00:02:42,000 --> 00:02:44,000
+like actual database, but yeah,
+
+70
+00:02:44,000 --> 00:02:45,000
+so that's what you wanna do here.
+
+71
+00:02:45,000 --> 00:02:46,000
+So what do we need here?
+
+72
+00:02:46,000 --> 00:02:47,000
+So basically, I need a method
+
+73
+00:02:47,000 --> 00:02:50,000
+which will return the list of jobs.
+
+74
+00:02:50,000 --> 00:02:54,000
+I will say public list of job post.
+
+75
+00:02:54,000 --> 00:02:57,000
+And we have to import the package for list as well,
+
+76
+00:02:57,000 --> 00:02:58,000
+so I will do that.
+
+77
+00:02:58,000 --> 00:03:01,000
+And then here, I will say this is getAllJobs.
+
+78
+00:03:03,000 --> 00:03:05,000
+Now, basically, we have to return the data.
+
+79
+00:03:05,000 --> 00:03:07,000
+Now, the way I can return that data is
+
+80
+00:03:07,000 --> 00:03:09,000
+with the help of array list, okay?
+
+81
+00:03:09,000 --> 00:03:12,000
+So as I mentioned, I will be having some demo data here.
+
+82
+00:03:12,000 --> 00:03:17,000
+And so, for that, I have to create a list of job post.
+
+83
+00:03:17,000 --> 00:03:20,000
+Let's say, I will say this is jobs equal to,
+
+84
+00:03:20,000 --> 00:03:22,000
+and I want to create a data.
+
+85
+00:03:22,000 --> 00:03:24,000
+I mean, of course, we want dummy data here.
+
+86
+00:03:24,000 --> 00:03:27,000
+And the way I can get that is let me just paste the code.
+
+87
+00:03:27,000 --> 00:03:30,000
+I don't want to type the entire demo data.
+
+88
+00:03:30,000 --> 00:03:33,000
+So basically, I have to create a new array list
+
+89
+00:03:33,000 --> 00:03:36,000
+and then I'm adding all this data into an array
+
+90
+00:03:36,000 --> 00:03:38,000
+and give it to the array list.
+
+91
+00:03:38,000 --> 00:03:41,000
+If you remember when I started with the video,
+
+92
+00:03:41,000 --> 00:03:42,000
+something was not working, right?
+
+93
+00:03:42,000 --> 00:03:45,000
+So I made one mistake when I was trying
+
+94
+00:03:45,000 --> 00:03:48,000
+to add the data in the array, I missed this part.
+
+95
+00:03:48,000 --> 00:03:51,000
+So what I was doing is I was directly using this syntax.
+
+96
+00:03:51,000 --> 00:03:54,000
+This works, but then this will make your list immutable.
+
+97
+00:03:54,000 --> 00:03:55,000
+I want a mutable string,
+
+98
+00:03:55,000 --> 00:03:58,000
+so for that, we have to use a new array list.
+
+99
+00:03:58,000 --> 00:04:00,000
+Okay, so we got the data here.
+
+100
+00:04:00,000 --> 00:04:03,000
+Here we just have to do one thing, just return the jobs,
+
+101
+00:04:03,000 --> 00:04:06,000
+our job is done, right?
+
+102
+00:04:06,000 --> 00:04:09,000
+And then we need one more to add the job.
+
+103
+00:04:09,000 --> 00:04:11,000
+So I will say public void addJob,
+
+104
+00:04:13,000 --> 00:04:15,000
+and this will accept a job object.
+
+105
+00:04:15,000 --> 00:04:17,000
+So I will say JobPost job,
+
+106
+00:04:17,000 --> 00:04:20,000
+and this will add the job in the list.
+
+107
+00:04:20,000 --> 00:04:21,000
+So whatever jobs you have, inside that,
+
+108
+00:04:21,000 --> 00:04:23,000
+you'll be adding one more.
+
+109
+00:04:23,000 --> 00:04:27,000
+So we'll say jobs.add the job.
+
+110
+00:04:28,000 --> 00:04:30,000
+That's it. These are the two methods we need.
+
+111
+00:04:30,000 --> 00:04:34,000
+So let's say, in future, if you want to use a database,
+
+112
+00:04:34,000 --> 00:04:37,000
+you will only change this class.
+
+113
+00:04:37,000 --> 00:04:39,000
+Other classes will have no idea what you're doing, okay?
+
+114
+00:04:39,000 --> 00:04:41,000
+So this class is responsible to fetch data from database
+
+115
+00:04:41,000 --> 00:04:45,000
+or some other server or maybe from a file for that matter.
+
+116
+00:04:45,000 --> 00:04:47,000
+We got this class. Let's go back to service.
+
+117
+00:04:47,000 --> 00:04:49,000
+Now, what service will do is service needs
+
+118
+00:04:49,000 --> 00:04:51,000
+an object of job posts.
+
+119
+00:04:51,000 --> 00:04:53,000
+I will say not this one
+
+120
+00:04:53,000 --> 00:04:56,000
+or JobService, not job post with a service.
+
+121
+00:04:57,000 --> 00:05:01,000
+And then using this object, I can basically say service dot.
+
+122
+00:05:01,000 --> 00:05:03,000
+But of course, when you want to add,
+
+123
+00:05:03,000 --> 00:05:07,000
+you have to also accept the JobPost here, right?
+
+124
+00:05:08,000 --> 00:05:11,000
+So that means someone who is calling this method
+
+125
+00:05:11,000 --> 00:05:14,000
+should also send, so add the job controller.
+
+126
+00:05:14,000 --> 00:05:15,000
+When you're calling this service,
+
+127
+00:05:15,000 --> 00:05:17,000
+we have to pass this object of job post.
+
+128
+00:05:17,000 --> 00:05:22,000
+So this object is getting passed from controller to service.
+
+129
+00:05:22,000 --> 00:05:25,000
+From service, it will go to the repo.
+
+130
+00:05:25,000 --> 00:05:27,000
+So we say addJob, jobPost.
+
+131
+00:05:27,000 --> 00:05:29,000
+So now, from the service, it's going to repo.
+
+132
+00:05:29,000 --> 00:05:31,000
+Repo is accepting it.
+
+133
+00:05:31,000 --> 00:05:34,000
+Now, this kind of objects are called DTO
+
+134
+00:05:34,000 --> 00:05:36,000
+which is data transfer objects, okay?
+
+135
+00:05:36,000 --> 00:05:39,000
+Because they're getting transfer between different layers.
+
+136
+00:05:39,000 --> 00:05:41,000
+Okay, so just from this point,
+
+137
+00:05:41,000 --> 00:05:43,000
+because we are going to use this later,
+
+138
+00:05:43,000 --> 00:05:46,000
+DTO, data transfer object.
+
+139
+00:05:46,000 --> 00:05:50,000
+So let's go back here. We got a job controller in this.
+
+140
+00:05:50,000 --> 00:05:52,000
+We have to pass this data, right?
+
+141
+00:05:53,000 --> 00:05:55,000
+But then we are not getting object of service here, right?
+
+142
+00:05:55,000 --> 00:05:57,000
+We are just declaring it.
+
+143
+00:05:57,000 --> 00:05:59,000
+So what we can do is, since we are using spring,
+
+144
+00:05:59,000 --> 00:06:01,000
+so we can simply say Autowired,
+
+145
+00:06:01,000 --> 00:06:03,000
+but for that, we have to also make sure,
+
+146
+00:06:03,000 --> 00:06:05,000
+okay, there's some problem.
+
+147
+00:06:05,000 --> 00:06:09,000
+Yeah, in the job repo, we are saying this is okay,
+
+148
+00:06:09,000 --> 00:06:11,000
+what annotation we have to use?
+
+149
+00:06:11,000 --> 00:06:13,000
+For database, we are going to use,
+
+150
+00:06:13,000 --> 00:06:15,000
+for the layer which works with database,
+
+151
+00:06:15,000 --> 00:06:18,000
+we use repository annotation.
+
+152
+00:06:18,000 --> 00:06:19,000
+Service also works here.
+
+153
+00:06:19,000 --> 00:06:23,000
+Component also works, but then repository makes sense.
+
+154
+00:06:23,000 --> 00:06:24,000
+In service, we have an issue.
+
+155
+00:06:24,000 --> 00:06:29,000
+We have to return, so it's a return service.getAllJobs.
+
+156
+00:06:32,000 --> 00:06:35,000
+Okay, so this is done, service layer is done
+
+157
+00:06:35,000 --> 00:06:36,000
+because we are, what we are doing in service layer
+
+158
+00:06:36,000 --> 00:06:40,000
+is just send data to the repo layer
+
+159
+00:06:40,000 --> 00:06:43,000
+and then just get data from the repo layer.
+
+160
+00:06:43,000 --> 00:06:46,000
+The job controller will get the data and add data.
+
+161
+00:06:46,000 --> 00:06:48,000
+So when you say you are adding a job,
+
+162
+00:06:48,000 --> 00:06:50,000
+or we are sending a new request,
+
+163
+00:06:50,000 --> 00:06:52,000
+we have to make sure that you add that there.
+
+164
+00:06:52,000 --> 00:06:54,000
+For this, you need object of service here.
+
+165
+00:06:54,000 --> 00:06:55,000
+So in the controller, normally,
+
+166
+00:06:55,000 --> 00:06:57,000
+you'll be having the object of service.
+
+167
+00:06:57,000 --> 00:07:02,000
+So it's a job service and we'll make this private.
+
+168
+00:07:02,000 --> 00:07:04,000
+And for this, I need Autowired.
+
+169
+00:07:04,000 --> 00:07:07,000
+Okay, so now, we are doing the wiring between the elements,
+
+170
+00:07:07,000 --> 00:07:08,000
+between the values.
+
+171
+00:07:08,000 --> 00:07:11,000
+So basically, controller has a object of service.
+
+172
+00:07:11,000 --> 00:07:14,000
+Service has the object of, oh,
+
+173
+00:07:14,000 --> 00:07:16,000
+I made a mistake here, I'm calling the same method.
+
+174
+00:07:16,000 --> 00:07:19,000
+My bad, it should be repo, not service.
+
+175
+00:07:19,000 --> 00:07:21,000
+Okay, so controller talking to service,
+
+176
+00:07:21,000 --> 00:07:22,000
+service talking to repo.
+
+177
+00:07:22,000 --> 00:07:24,000
+Okay, that's what we are doing here, right?
+
+178
+00:07:24,000 --> 00:07:27,000
+And now, will this work?
+
+179
+00:07:27,000 --> 00:07:28,000
+Am I missing something here?
+
+180
+00:07:28,000 --> 00:07:32,000
+On service, we got @Service.
+
+181
+00:07:32,000 --> 00:07:34,000
+On repo, we got @Repo.
+
+182
+00:07:35,000 --> 00:07:36,000
+Everything looks cool.
+
+183
+00:07:36,000 --> 00:07:37,000
+Let's go to controller.
+
+184
+00:07:37,000 --> 00:07:41,000
+Looks cool. But then we are not sending data, right?
+
+185
+00:07:41,000 --> 00:07:46,000
+So we say service.addJob. Let's send the job post.
+
+186
+00:07:46,000 --> 00:07:46,000
+It should work now.
+
+187
+00:07:46,000 --> 00:07:48,000
+So we have completed all the layers,
+
+188
+00:07:48,000 --> 00:07:51,000
+and it should add the data in the list, okay?
+
+189
+00:07:51,000 --> 00:07:52,000
+But how we are going to verify?
+
+190
+00:07:52,000 --> 00:07:55,000
+So temporary what I'm gonna do is before,
+
+191
+00:07:55,000 --> 00:07:59,000
+I mean after adding this, let me also print the entire list.
+
+192
+00:07:59,000 --> 00:08:04,000
+So I'll print the jobs, so that I will know
+
+193
+00:08:04,000 --> 00:08:08,000
+it got added in the existing list here, okay?
+
+194
+00:08:08,000 --> 00:08:09,000
+The last number, the last post right here is five.
+
+195
+00:08:09,000 --> 00:08:13,000
+Anyway, we are going to use 101. Let's see if that works.
+
+196
+00:08:13,000 --> 00:08:15,000
+Let's restart this. Okay, server started.
+
+197
+00:08:15,000 --> 00:08:18,000
+Let's go back to our page.
+
+198
+00:08:18,000 --> 00:08:20,000
+And I will just go back here a bit.
+
+199
+00:08:20,000 --> 00:08:22,000
+I don't want to enter this data once again.
+
+200
+00:08:22,000 --> 00:08:24,000
+So click on submit. Something happened.
+
+201
+00:08:24,000 --> 00:08:26,000
+You can see we got the page here.
+
+202
+00:08:26,000 --> 00:08:29,000
+But let's say the output, if you see the output,
+
+203
+00:08:29,000 --> 00:08:31,000
+we are basically printing everything, right?
+
+204
+00:08:31,000 --> 00:08:33,000
+So let me just wrap the content.
+
+205
+00:08:33,000 --> 00:08:37,000
+And if you see the last entry is for 101.
+
+206
+00:08:37,000 --> 00:08:40,000
+So yes, it came, the data came to the repo layer
+
+207
+00:08:40,000 --> 00:08:42,000
+and then we are adding that.
+
+208
+00:08:42,000 --> 00:08:45,000
+So yes, it's there in the list, okay?
+
+209
+00:08:45,000 --> 00:08:47,000
+But I don't want to view data here.
+
+210
+00:08:47,000 --> 00:08:49,000
+I want to view the data in the view page.
+
+211
+00:08:49,000 --> 00:08:51,000
+And we have not done that yet.
+
+212
+00:08:51,000 --> 00:08:53,000
+So let's see that in the next video.
+
diff --git a/14 - Building a Project/007 View Data_en.srt b/14 - Building a Project/007 View Data_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..42e9bc5f6fec7aa9564dfba1a5415257c7f01974
--- /dev/null
+++ b/14 - Building a Project/007 View Data_en.srt	
@@ -0,0 +1,468 @@
+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: Now it's time to work with the view, okay?
+
+3
+00:00:05,000 --> 00:00:08,000
+When I say view, I'm saying view all jobs
+
+4
+00:00:08,000 --> 00:00:10,000
+because that is not working, right?
+
+5
+00:00:10,000 --> 00:00:12,000
+So example, if I go back here
+
+6
+00:00:12,000 --> 00:00:14,000
+and if I click on all jobs, nothing is there
+
+7
+00:00:14,000 --> 00:00:17,000
+because we are not doing that.
+
+8
+00:00:17,000 --> 00:00:19,000
+It says 404.
+
+9
+00:00:19,000 --> 00:00:21,000
+To achieve that, we have to go to the controller
+
+10
+00:00:21,000 --> 00:00:23,000
+and we have to handle the view all
+
+11
+00:00:23,000 --> 00:00:24,000
+because that's the UL, right?
+
+12
+00:00:24,000 --> 00:00:26,000
+So if I go back to the UL,
+
+13
+00:00:26,000 --> 00:00:29,000
+we have to map it to view all jobs.
+
+14
+00:00:29,000 --> 00:00:32,000
+So let's do that. So let me create a controller here.
+
+15
+00:00:32,000 --> 00:00:36,000
+So as a public, it should return a string, a page of course.
+
+16
+00:00:36,000 --> 00:00:39,000
+And then the meta name will be, let's say, view jobs.
+
+17
+00:00:39,000 --> 00:00:41,000
+And of course we are not accepting anything in the back.
+
+18
+00:00:41,000 --> 00:00:42,000
+So let's keep it empty.
+
+19
+00:00:42,000 --> 00:00:44,000
+But we have to do the mapping, right?
+
+20
+00:00:44,000 --> 00:00:45,000
+So it should guest mapping, as I mentioned,
+
+21
+00:00:45,000 --> 00:00:47,000
+we will be using Get mapping or post mapping here.
+
+22
+00:00:47,000 --> 00:00:52,000
+And the URL is view all jobs.
+
+23
+00:00:52,000 --> 00:00:53,000
+This is a UL, right? Now.
+
+24
+00:00:53,000 --> 00:00:55,000
+If you go back here, now basically we have
+
+25
+00:00:55,000 --> 00:00:57,000
+to return all the data, right?
+
+26
+00:00:57,000 --> 00:00:58,000
+So first of all, it may turn the name of the view.
+
+27
+00:00:58,000 --> 00:01:00,000
+So the name of the view is view, okay?
+
+28
+00:01:00,000 --> 00:01:02,000
+What was the name of the view?
+
+29
+00:01:02,000 --> 00:01:06,000
+So it's view all jobs, right?
+
+30
+00:01:06,000 --> 00:01:09,000
+But here we don't just want to return the view, right?
+
+31
+00:01:09,000 --> 00:01:12,000
+Because if you do that, let me just restart the application.
+
+32
+00:01:12,000 --> 00:01:13,000
+So server started,
+
+33
+00:01:13,000 --> 00:01:17,000
+and if I click on all jobs,
+
+34
+00:01:17,000 --> 00:01:20,000
+so you can see we got the view, but not the data.
+
+35
+00:01:20,000 --> 00:01:23,000
+So the page is coming, but where's the data?
+
+36
+00:01:23,000 --> 00:01:24,000
+You know why data is not coming?
+
+37
+00:01:24,000 --> 00:01:26,000
+Because we are not sending data. So how do we do that?
+
+38
+00:01:26,000 --> 00:01:28,000
+First of all, we have to get the data in a list.
+
+39
+00:01:28,000 --> 00:01:31,000
+So I will say list of job post,
+
+40
+00:01:31,000 --> 00:01:33,000
+we have to input the package for list.
+
+41
+00:01:33,000 --> 00:01:36,000
+And here we'll say jobs equal to,
+
+42
+00:01:36,000 --> 00:01:38,000
+we have to get this from service, right?
+
+43
+00:01:38,000 --> 00:01:39,000
+So service will return all the jobs
+
+44
+00:01:39,000 --> 00:01:41,000
+because we are doing that from the different layers.
+
+45
+00:01:41,000 --> 00:01:42,000
+In the service also,
+
+46
+00:01:42,000 --> 00:01:45,000
+we are returning all the jobs.
+
+47
+00:01:45,000 --> 00:01:47,000
+In the repo also, we are returning all the jobs, right?
+
+48
+00:01:47,000 --> 00:01:50,000
+If you can see here, but we were not sending the data
+
+49
+00:01:50,000 --> 00:01:52,000
+to the view and now we have the data,
+
+50
+00:01:52,000 --> 00:01:54,000
+we just have to send that to the view.
+
+51
+00:01:54,000 --> 00:01:55,000
+How will you send that?
+
+52
+00:01:55,000 --> 00:01:56,000
+We have seen this before, right?
+
+53
+00:01:56,000 --> 00:01:58,000
+We can use a model object here.
+
+54
+00:01:58,000 --> 00:02:00,000
+So to import the package for Model M,
+
+55
+00:02:00,000 --> 00:02:04,000
+and then whatever data you have, just add that to the model.
+
+56
+00:02:04,000 --> 00:02:06,000
+So I would say this is, okay.
+
+57
+00:02:06,000 --> 00:02:07,000
+Now what should your name, in fact, in the view,
+
+58
+00:02:07,000 --> 00:02:09,000
+we are already using a name.
+
+59
+00:02:09,000 --> 00:02:10,000
+So let's use that.
+
+60
+00:02:10,000 --> 00:02:12,000
+So if you go to view all jobs,
+
+61
+00:02:12,000 --> 00:02:17,000
+and if you see this is what we are sending there, job posts.
+
+62
+00:02:17,000 --> 00:02:18,000
+So of course you have to make sure
+
+63
+00:02:18,000 --> 00:02:20,000
+that you send the same thing.
+
+64
+00:02:20,000 --> 00:02:23,000
+So it is job posts.
+
+65
+00:02:23,000 --> 00:02:26,000
+And then we can send jobs.
+
+66
+00:02:26,000 --> 00:02:28,000
+Of course, this name can be different from this.
+
+67
+00:02:28,000 --> 00:02:32,000
+And that's why we are using a different name here and done.
+
+68
+00:02:32,000 --> 00:02:34,000
+I mean this should work. Let's try.
+
+69
+00:02:34,000 --> 00:02:37,000
+So we shut the application, go back here,
+
+70
+00:02:37,000 --> 00:02:38,000
+I will go to the homepage first.
+
+71
+00:02:38,000 --> 00:02:41,000
+So I'm on the homepage. Let's click on all jobs.
+
+72
+00:02:41,000 --> 00:02:43,000
+And yes, we got the data.
+
+73
+00:02:43,000 --> 00:02:45,000
+So basically it's all about sending data to the view, right?
+
+74
+00:02:45,000 --> 00:02:48,000
+View is already designed, you just have to send it.
+
+75
+00:02:48,000 --> 00:02:52,000
+The beauty is, why I'm not focusing on view here is
+
+76
+00:02:52,000 --> 00:02:54,000
+because this view will change, right?
+
+77
+00:02:54,000 --> 00:02:56,000
+In the upcoming sections, we are gonna talk about
+
+78
+00:02:56,000 --> 00:02:59,000
+how do you connect this with your React.
+
+79
+00:02:59,000 --> 00:03:01,000
+Now in the React, we'll be having a separate view, right?
+
+80
+00:03:01,000 --> 00:03:03,000
+A separate front end.
+
+81
+00:03:03,000 --> 00:03:05,000
+From here we just have to send data
+
+82
+00:03:05,000 --> 00:03:09,000
+and you'll be amazed to see how many lines of code
+
+83
+00:03:09,000 --> 00:03:10,000
+you have to change.
+
+84
+00:03:10,000 --> 00:03:12,000
+I mean, I'm saying in a positive way.
+
+85
+00:03:12,000 --> 00:03:14,000
+You have to basically work with less lines of code.
+
+86
+00:03:14,000 --> 00:03:16,000
+I mean you have to change less lines of code
+
+87
+00:03:16,000 --> 00:03:17,000
+to make it work.
+
+88
+00:03:17,000 --> 00:03:20,000
+And we'll be using the same project just to achieve that.
+
+89
+00:03:20,000 --> 00:03:22,000
+Okay, so this view is working,
+
+90
+00:03:22,000 --> 00:03:24,000
+but then we have to also verify if I add a new job.
+
+91
+00:03:24,000 --> 00:03:27,000
+Example here we only have five,
+
+92
+00:03:27,000 --> 00:03:28,000
+but let's say if I add a new job now.
+
+93
+00:03:29,000 --> 00:03:32,000
+Let's say post is 101,
+
+94
+00:03:32,000 --> 00:03:36,000
+profile is Java Spring Dev.
+
+95
+00:03:36,000 --> 00:03:38,000
+Some description,
+
+96
+00:03:38,000 --> 00:03:40,000
+experience, let's say one year,
+
+97
+00:03:40,000 --> 00:03:42,000
+person should know Java, JavaScript
+
+98
+00:03:42,000 --> 00:03:44,000
+and TypeScript also Spring, but I'm not able
+
+99
+00:03:44,000 --> 00:03:45,000
+to find Spring here.
+
+100
+00:03:45,000 --> 00:03:47,000
+But let's click on submit.
+
+101
+00:03:47,000 --> 00:03:49,000
+You can say this is the data we want, right?
+
+102
+00:03:49,000 --> 00:03:52,000
+But if I click on all jobs now the data should be there
+
+103
+00:03:52,000 --> 00:03:53,000
+and it it is there.
+
+104
+00:03:53,000 --> 00:03:55,000
+So a person who is using this application
+
+105
+00:03:55,000 --> 00:03:58,000
+has no idea if you're even using database, but yes,
+
+106
+00:03:58,000 --> 00:04:00,000
+the moment you reach out the application,
+
+107
+00:04:00,000 --> 00:04:01,000
+you will lose everything.
+
+108
+00:04:01,000 --> 00:04:03,000
+And we don't want that, right?
+
+109
+00:04:03,000 --> 00:04:05,000
+We want a database layer there. How do we do that?
+
+110
+00:04:05,000 --> 00:04:07,000
+So we'll see that in the upcoming sessions.
+
+111
+00:04:07,000 --> 00:04:09,000
+We'll also see how can you have a separate front end
+
+112
+00:04:09,000 --> 00:04:11,000
+and then this particular server
+
+113
+00:04:11,000 --> 00:04:13,000
+will only work with the data.
+
+114
+00:04:13,000 --> 00:04:16,000
+So the client can be anything, a React application,
+
+115
+00:04:16,000 --> 00:04:18,000
+a mobile application, or any other server.
+
+116
+00:04:18,000 --> 00:04:21,000
+So we are slowly heading towards that point.
+
+117
+00:04:21,000 --> 00:04:24,000
+And how do we do it? Let's see in the upcoming videos.
+
diff --git a/14 - Building a Project/008 Source-Code.url b/14 - Building a Project/008 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..7e04a22f1e5caf33ffb7f668c9099f00c6aa7c14
--- /dev/null
+++ b/14 - Building a Project/008 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/main/7%20JobApp-Project
\ No newline at end of file
diff --git a/14 - Building a Project/008 Summary for Job Webapp_en.srt b/14 - Building a Project/008 Summary for Job Webapp_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..704fc46eec2e398bb65c73382db7d3c5b5be1b56
--- /dev/null
+++ b/14 - Building a Project/008 Summary for Job Webapp_en.srt	
@@ -0,0 +1,348 @@
+1
+00:00:00,000 --> 00:00:03,000
+(soft music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: So let's do a quick summary
+
+3
+00:00:05,000 --> 00:00:06,000
+of whatever we have done.
+
+4
+00:00:06,000 --> 00:00:07,000
+So basically we have
+
+5
+00:00:07,000 --> 00:00:08,000
+a project which we are
+
+6
+00:00:08,000 --> 00:00:10,000
+building for the job portal.
+
+7
+00:00:10,000 --> 00:00:11,000
+Now this is where you can
+
+8
+00:00:11,000 --> 00:00:12,000
+add a new job.
+
+9
+00:00:12,000 --> 00:00:13,000
+If you're an employer,
+
+10
+00:00:13,000 --> 00:00:14,000
+you can add a new job.
+
+11
+00:00:14,000 --> 00:00:17,000
+But if you are a employer
+
+12
+00:00:17,000 --> 00:00:18,000
+and if you're searching for a job,
+
+13
+00:00:18,000 --> 00:00:19,000
+basically you can click on
+
+14
+00:00:19,000 --> 00:00:20,000
+view all jobs, and you can search
+
+15
+00:00:20,000 --> 00:00:21,000
+for the jobs here.
+
+16
+00:00:21,000 --> 00:00:23,000
+The way we have implemented this is,
+
+17
+00:00:23,000 --> 00:00:23,000
+we have already have
+
+18
+00:00:23,000 --> 00:00:25,000
+a lot of views here.
+
+19
+00:00:25,000 --> 00:00:27,000
+One for add job homepage,
+
+20
+00:00:27,000 --> 00:00:29,000
+success page if you want to post
+
+21
+00:00:29,000 --> 00:00:30,000
+a new job.
+
+22
+00:00:30,000 --> 00:00:31,000
+And then once you post a new job,
+
+23
+00:00:31,000 --> 00:00:32,000
+you want to see a screen
+
+24
+00:00:32,000 --> 00:00:33,000
+that is success page.
+
+25
+00:00:33,000 --> 00:00:35,000
+And then we have View All Jobs.
+
+26
+00:00:35,000 --> 00:00:36,000
+And to achieve this,
+
+27
+00:00:36,000 --> 00:00:38,000
+we have a controller here.
+
+28
+00:00:38,000 --> 00:00:40,000
+So controller is handling different requests.
+
+29
+00:00:40,000 --> 00:00:42,000
+The first one is for the home.
+
+30
+00:00:42,000 --> 00:00:43,000
+And this homepage will be called,
+
+31
+00:00:43,000 --> 00:00:45,000
+if you send a request
+
+32
+00:00:45,000 --> 00:00:46,000
+for the actual homepage
+
+33
+00:00:46,000 --> 00:00:48,000
+or slash home, you will...
+
+34
+00:00:48,000 --> 00:00:50,000
+It'll call the homepage.
+
+35
+00:00:50,000 --> 00:00:52,000
+For Add Job, we are adding a URL here.
+
+36
+00:00:52,000 --> 00:00:56,000
+For form, we are having this method here.
+
+37
+00:00:56,000 --> 00:00:57,000
+But then this is a post mapping,
+
+38
+00:00:57,000 --> 00:00:58,000
+not the get mapping.
+
+39
+00:00:58,000 --> 00:00:59,000
+So whatever data send,
+
+40
+00:00:59,000 --> 00:01:01,000
+you're sending from the form will be
+
+41
+00:01:01,000 --> 00:01:02,000
+stored in this job post.
+
+42
+00:01:02,000 --> 00:01:03,000
+We can also use model attribute here,
+
+43
+00:01:03,000 --> 00:01:05,000
+but not required.
+
+44
+00:01:05,000 --> 00:01:07,000
+And whatever data you're getting,
+
+45
+00:01:09,000 --> 00:01:10,000
+you are basically sending to a collection.
+
+46
+00:01:10,000 --> 00:01:11,000
+Now this collection is getting created in
+
+47
+00:01:11,000 --> 00:01:13,000
+the reppo.
+
+48
+00:01:13,000 --> 00:01:16,000
+So if you see we have a reppo layer here,
+
+49
+00:01:16,000 --> 00:01:18,000
+we are not using database, we are just using a
+
+50
+00:01:18,000 --> 00:01:19,000
+hard coded list.
+
+51
+00:01:19,000 --> 00:01:20,000
+And this is basically,
+
+52
+00:01:20,000 --> 00:01:22,000
+you gonna add the jobs as well.
+
+53
+00:01:22,000 --> 00:01:24,000
+And that's what we have done.
+
+54
+00:01:24,000 --> 00:01:25,000
+But we can also convert this
+
+55
+00:01:25,000 --> 00:01:27,000
+into a database application.
+
+56
+00:01:27,000 --> 00:01:28,000
+Just connect with database.
+
+57
+00:01:28,000 --> 00:01:29,000
+In between we have a service layer.
+
+58
+00:01:29,000 --> 00:01:30,000
+So basically a
+
+59
+00:01:30,000 --> 00:01:32,000
+client talks to a controller, controller,
+
+60
+00:01:32,000 --> 00:01:32,000
+talks to our service,
+
+61
+00:01:32,000 --> 00:01:35,000
+service, talks to reppo, talks
+
+62
+00:01:35,000 --> 00:01:37,000
+to a database or a file or some other server,
+
+63
+00:01:37,000 --> 00:01:38,000
+right?
+
+64
+00:01:38,000 --> 00:01:40,000
+And in the controller we are able to add
+
+65
+00:01:40,000 --> 00:01:42,000
+that we are able to fetch data.
+
+66
+00:01:42,000 --> 00:01:45,000
+So when you say view all jobs, you should be able
+
+67
+00:01:45,000 --> 00:01:46,000
+to view all the jobs.
+
+68
+00:01:46,000 --> 00:01:47,000
+So that's what you're doing here.
+
+69
+00:01:47,000 --> 00:01:49,000
+And additionally,
+
+70
+00:01:49,000 --> 00:01:53,000
+we have used some dependency here for the JSP.
+
+71
+00:01:53,000 --> 00:01:54,000
+And the moment you remove
+
+72
+00:01:54,000 --> 00:01:55,000
+JSP from your project, lot
+
+73
+00:01:55,000 --> 00:01:56,000
+of dependency will go away.
+
+74
+00:01:56,000 --> 00:01:57,000
+Like, we don't need Jasper,
+
+75
+00:01:57,000 --> 00:02:00,000
+we don't need this Jakarta,
+
+76
+00:02:00,000 --> 00:02:01,000
+J-S-P-J-S Steel.
+
+77
+00:02:01,000 --> 00:02:03,000
+We don't need this from the glass fish.
+
+78
+00:02:03,000 --> 00:02:05,000
+All this will be removed when you don't have a
+
+79
+00:02:05,000 --> 00:02:06,000
+JSP in your project.
+
+80
+00:02:06,000 --> 00:02:07,000
+Okay? Maybe that's the way people are
+
+81
+00:02:07,000 --> 00:02:09,000
+running away from JSP,
+
+82
+00:02:09,000 --> 00:02:11,000
+but that, yeah, that's, that's
+
+83
+00:02:11,000 --> 00:02:13,000
+how things are working out here.
+
+84
+00:02:13,000 --> 00:02:14,000
+So look at the project,
+
+85
+00:02:14,000 --> 00:02:16,000
+make sure you do this project by yourself also.
+
+86
+00:02:16,000 --> 00:02:19,000
+That's important. And that's it.
+
+87
+00:02:19,000 --> 00:02:20,000
+See you in the next section.
+
diff --git a/14 - Building a Project/external-links.txt b/14 - Building a Project/external-links.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b1506226b4bf5acc1d22066faff59f0d5edc6807
--- /dev/null
+++ b/14 - Building a Project/external-links.txt	
@@ -0,0 +1,6 @@
+
+002 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/main/7%20JobApp-Project
+
+008 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/main/7%20JobApp-Project
diff --git a/15 - REST using Spring Boot/001 Rest using Spring Boot Introduction_en.srt b/15 - REST using Spring Boot/001 Rest using Spring Boot Introduction_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..537f4f137a80725b04514b4de170d59185ca927a
--- /dev/null
+++ b/15 - REST using Spring Boot/001 Rest using Spring Boot Introduction_en.srt	
@@ -0,0 +1,508 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: Welcome to the new section where we're gonna talk about
+
+3
+00:00:06,000 --> 00:00:09,000
+how do you work with REST API using Spring Boot.
+
+4
+00:00:09,000 --> 00:00:12,000
+The thing is, whatever we have done till now is
+
+5
+00:00:12,000 --> 00:00:15,000
+we have built a application, which is for the job
+
+6
+00:00:15,000 --> 00:00:18,000
+where a user can basically view all the jobs
+
+7
+00:00:18,000 --> 00:00:21,000
+as an job seeker.
+
+8
+00:00:21,000 --> 00:00:23,000
+And if you're an employer you can add a job.
+
+9
+00:00:23,000 --> 00:00:24,000
+And in this section we are going
+
+10
+00:00:24,000 --> 00:00:28,000
+to focus on the same project but with a different concept.
+
+11
+00:00:28,000 --> 00:00:30,000
+The thing is, when you build this application,
+
+12
+00:00:30,000 --> 00:00:32,000
+in the same application, you have everything,
+
+13
+00:00:32,000 --> 00:00:34,000
+you have a front end and you have a backend.
+
+14
+00:00:34,000 --> 00:00:37,000
+So we can say this is a full stack application
+
+15
+00:00:37,000 --> 00:00:40,000
+where you have a front end, backend in one project, right?
+
+16
+00:00:40,000 --> 00:00:41,000
+And that's what we have done here.
+
+17
+00:00:41,000 --> 00:00:45,000
+So basically we have controllers for accepting the request.
+
+18
+00:00:45,000 --> 00:00:48,000
+We have different layers to do some processing,
+
+19
+00:00:48,000 --> 00:00:49,000
+getting data from database.
+
+20
+00:00:49,000 --> 00:00:51,000
+Of course we don't have a database,
+
+21
+00:00:51,000 --> 00:00:53,000
+but we are mocking that we are using a database here.
+
+22
+00:00:53,000 --> 00:00:56,000
+So this job rapport, we are retaining data,
+
+23
+00:00:56,000 --> 00:00:59,000
+but we can assume that this is coming from database now.
+
+24
+00:00:59,000 --> 00:01:02,000
+Okay, but the important thing is we have also created
+
+25
+00:01:02,000 --> 00:01:04,000
+all these view pages, right?
+
+26
+00:01:04,000 --> 00:01:06,000
+So we have got JSP pages here.
+
+27
+00:01:06,000 --> 00:01:09,000
+So every time a client requests for something,
+
+28
+00:01:09,000 --> 00:01:11,000
+you return a page, right?
+
+29
+00:01:11,000 --> 00:01:13,000
+See, ultimately you want to return data,
+
+30
+00:01:13,000 --> 00:01:15,000
+but then you can't simply return any data.
+
+31
+00:01:15,000 --> 00:01:18,000
+So you have to format that data in a particular format.
+
+32
+00:01:18,000 --> 00:01:21,000
+So basically you have to do proper formatting for that data.
+
+33
+00:01:21,000 --> 00:01:23,000
+So you have your page should look beautiful, right?
+
+34
+00:01:23,000 --> 00:01:25,000
+And that's what we have done here.
+
+35
+00:01:25,000 --> 00:01:27,000
+Of course, this page is not that beautiful,
+
+36
+00:01:27,000 --> 00:01:29,000
+but at least as a user, I can use this website, right?
+
+37
+00:01:29,000 --> 00:01:31,000
+So I can click on this, I can click on this ad,
+
+38
+00:01:31,000 --> 00:01:35,000
+I can just click on the links here and I will get my data.
+
+39
+00:01:35,000 --> 00:01:36,000
+But think about this.
+
+40
+00:01:36,000 --> 00:01:37,000
+See, in the earlier days what we used
+
+41
+00:01:37,000 --> 00:01:40,000
+to have is we used to have a proper web application
+
+42
+00:01:40,000 --> 00:01:42,000
+with a front end, with a backend.
+
+43
+00:01:42,000 --> 00:01:44,000
+And anyone want to use your website
+
+44
+00:01:44,000 --> 00:01:47,000
+or your web application, they can simply open the browser,
+
+45
+00:01:47,000 --> 00:01:49,000
+they can go to the page and they can access everything.
+
+46
+00:01:49,000 --> 00:01:52,000
+But also we have something called mobiles, right?
+
+47
+00:01:52,000 --> 00:01:55,000
+So nowadays we also use mobiles to achieve the same thing.
+
+48
+00:01:55,000 --> 00:01:59,000
+Doesn't matter which app you talk about, Facebook, LinkedIn,
+
+49
+00:01:59,000 --> 00:02:02,000
+maybe you want to check a score for your cricket game,
+
+50
+00:02:02,000 --> 00:02:04,000
+you have applications.
+
+51
+00:02:04,000 --> 00:02:06,000
+So that means whatever we do using browsers,
+
+52
+00:02:06,000 --> 00:02:08,000
+we also have apps for that.
+
+53
+00:02:08,000 --> 00:02:11,000
+Now, if you're trying to understand this architecture,
+
+54
+00:02:11,000 --> 00:02:15,000
+let's say for a client, which is your browser-based client,
+
+55
+00:02:15,000 --> 00:02:16,000
+you are building a server.
+
+56
+00:02:16,000 --> 00:02:19,000
+Now this server is responsible to return HTML pages
+
+57
+00:02:19,000 --> 00:02:21,000
+because that's what your browser expect.
+
+58
+00:02:21,000 --> 00:02:24,000
+On the other hand, you have a mobile phone now.
+
+59
+00:02:24,000 --> 00:02:26,000
+In the mobile phone, the layout is there.
+
+60
+00:02:26,000 --> 00:02:30,000
+What you want from this server is just data, right?
+
+61
+00:02:30,000 --> 00:02:30,000
+Adjacent data.
+
+62
+00:02:30,000 --> 00:02:32,000
+So that means we have to basically create
+
+63
+00:02:32,000 --> 00:02:33,000
+two different servers.
+
+64
+00:02:33,000 --> 00:02:35,000
+One to work with the browsers
+
+65
+00:02:35,000 --> 00:02:37,000
+because they expect you to give JSP
+
+66
+00:02:37,000 --> 00:02:39,000
+and second server for the mobile applications
+
+67
+00:02:39,000 --> 00:02:40,000
+where you can give data.
+
+68
+00:02:40,000 --> 00:02:41,000
+And not just mobile,
+
+69
+00:02:41,000 --> 00:02:44,000
+this can be a server as well as, as we discussed before.
+
+70
+00:02:44,000 --> 00:02:45,000
+Don't you think?
+
+71
+00:02:45,000 --> 00:02:47,000
+You know, we can create a common server
+
+72
+00:02:47,000 --> 00:02:51,000
+and this server is not going to return any page.
+
+73
+00:02:51,000 --> 00:02:53,000
+It'll return just data.
+
+74
+00:02:53,000 --> 00:02:56,000
+Then you will say, you know, the people who use browsers
+
+75
+00:02:56,000 --> 00:02:59,000
+or if you want to access the same application using browser,
+
+76
+00:02:59,000 --> 00:03:02,000
+what you will get is JSON data in the page.
+
+77
+00:03:02,000 --> 00:03:05,000
+You do not get this UI. How do you work with the UI?
+
+78
+00:03:05,000 --> 00:03:08,000
+And that's where you build a front end separately,
+
+79
+00:03:08,000 --> 00:03:10,000
+maybe with the help of React, Angular,
+
+80
+00:03:10,000 --> 00:03:12,000
+whatever technology you want to use.
+
+81
+00:03:12,000 --> 00:03:16,000
+So you'll be having a separate UI, which is your front end,
+
+82
+00:03:16,000 --> 00:03:18,000
+and you'll building a separate backend.
+
+83
+00:03:18,000 --> 00:03:21,000
+Now the advantage of this is this backend server
+
+84
+00:03:21,000 --> 00:03:22,000
+will only work with JSON format,
+
+85
+00:03:22,000 --> 00:03:24,000
+or it can be also XML format.
+
+86
+00:03:24,000 --> 00:03:26,000
+Because these two are famous formats,
+
+87
+00:03:26,000 --> 00:03:28,000
+which we use JSON, XML.
+
+88
+00:03:28,000 --> 00:03:31,000
+Basically if you want to send data from client to server,
+
+89
+00:03:31,000 --> 00:03:33,000
+you will use JSON format.
+
+90
+00:03:33,000 --> 00:03:35,000
+If you want to send data from server to client,
+
+91
+00:03:35,000 --> 00:03:37,000
+you will use adjacent format.
+
+92
+00:03:37,000 --> 00:03:40,000
+So the communication, the payload is happening with the help
+
+93
+00:03:40,000 --> 00:03:41,000
+of adjacent data there.
+
+94
+00:03:41,000 --> 00:03:44,000
+It can be browser, it can be your Android application
+
+95
+00:03:44,000 --> 00:03:46,000
+or iOS application for that matter.
+
+96
+00:03:46,000 --> 00:03:47,000
+So how do we achieve this?
+
+97
+00:03:47,000 --> 00:03:49,000
+How do you return just data from the server?
+
+98
+00:03:49,000 --> 00:03:53,000
+And that's where we can use something called a REST API.
+
+99
+00:03:53,000 --> 00:03:57,000
+So we want to build this entire application
+
+100
+00:03:57,000 --> 00:03:59,000
+where a server will not return a page.
+
+101
+00:03:59,000 --> 00:04:00,000
+So whatever we are doing here,
+
+102
+00:04:00,000 --> 00:04:02,000
+all these pages will not be keeping this.
+
+103
+00:04:02,000 --> 00:04:05,000
+We'll remove all the GSV pages will remove,
+
+104
+00:04:05,000 --> 00:04:08,000
+I mean the controllers will not return the pages now.
+
+105
+00:04:08,000 --> 00:04:09,000
+They will return data.
+
+106
+00:04:09,000 --> 00:04:11,000
+But how do we do that?
+
+107
+00:04:11,000 --> 00:04:12,000
+And what is REST?
+
+108
+00:04:12,000 --> 00:04:14,000
+So let's discuss that in the next video,
+
+109
+00:04:14,000 --> 00:04:16,000
+we'll also focus on the front end part.
+
+110
+00:04:16,000 --> 00:04:18,000
+So I do have a React front end ready,
+
+111
+00:04:18,000 --> 00:04:20,000
+which will act as a front end here.
+
+112
+00:04:20,000 --> 00:04:21,000
+And again, this is not a React course.
+
+113
+00:04:21,000 --> 00:04:24,000
+I will not teach you each thing in React,
+
+114
+00:04:24,000 --> 00:04:26,000
+but I will explain the project structure.
+
+115
+00:04:26,000 --> 00:04:27,000
+You can just get the project, make it run,
+
+116
+00:04:27,000 --> 00:04:29,000
+and you can connect with it.
+
+117
+00:04:29,000 --> 00:04:31,000
+And now you will say, Hey, you know, I don't want
+
+118
+00:04:31,000 --> 00:04:33,000
+to learn front end here.
+
+119
+00:04:33,000 --> 00:04:36,000
+In that case, how will you test your backend?
+
+120
+00:04:36,000 --> 00:04:37,000
+How will you know that?
+
+121
+00:04:37,000 --> 00:04:39,000
+What data you will you are receiving?
+
+122
+00:04:39,000 --> 00:04:41,000
+How do you send data?
+
+123
+00:04:41,000 --> 00:04:43,000
+So that's why we have to also use something called
+
+124
+00:04:43,000 --> 00:04:46,000
+a client, a REST client.
+
+125
+00:04:46,000 --> 00:04:47,000
+And that REST client is Postman.
+
+126
+00:04:47,000 --> 00:04:50,000
+We have multiple options, but Postman is famous.
+
+127
+00:04:50,000 --> 00:04:52,000
+So we'll also see how do we work with postman.
+
diff --git a/15 - REST using Spring Boot/002 What is REST_en.srt b/15 - REST using Spring Boot/002 What is REST_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..a141427f9fa9b306c195d65e9eb78ee5b0cf988e
--- /dev/null
+++ b/15 - REST using Spring Boot/002 What is REST_en.srt	
@@ -0,0 +1,688 @@
+1
+00:00:00,000 --> 00:00:03,000
+(mellow bright music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: In this video, we'll talk about REST,
+
+3
+00:00:05,000 --> 00:00:09,000
+which stands for Representational State Transfer.
+
+4
+00:00:09,000 --> 00:00:11,000
+See, the thing is, if we talk about a web application,
+
+5
+00:00:11,000 --> 00:00:14,000
+most of the time, we work with data, right?
+
+6
+00:00:14,000 --> 00:00:16,000
+Creating data, reading data,
+
+7
+00:00:16,000 --> 00:00:18,000
+updating data, and deleting data.
+
+8
+00:00:18,000 --> 00:00:21,000
+We can also call this as a CRUD operation:
+
+9
+00:00:21,000 --> 00:00:23,000
+create, read, update, and delete.
+
+10
+00:00:23,000 --> 00:00:26,000
+So what we basically do is you want to create some data
+
+11
+00:00:26,000 --> 00:00:27,000
+on the server.
+
+12
+00:00:27,000 --> 00:00:28,000
+You want to get some data.
+
+13
+00:00:28,000 --> 00:00:30,000
+You want to update some data.
+
+14
+00:00:30,000 --> 00:00:31,000
+You want to delete some data.
+
+15
+00:00:31,000 --> 00:00:33,000
+To achieve this, first of all,
+
+16
+00:00:33,000 --> 00:00:34,000
+we have to consider this data,
+
+17
+00:00:34,000 --> 00:00:37,000
+which is on the server, as a resource.
+
+18
+00:00:37,000 --> 00:00:37,000
+I mean, think about this.
+
+19
+00:00:37,000 --> 00:00:39,000
+Whenever you try to build an application,
+
+20
+00:00:39,000 --> 00:00:42,000
+you create entities out of it, right?
+
+21
+00:00:42,000 --> 00:00:43,000
+So let's say if you talk about the job application,
+
+22
+00:00:43,000 --> 00:00:44,000
+which you are building,
+
+23
+00:00:44,000 --> 00:00:45,000
+in this job application,
+
+24
+00:00:45,000 --> 00:00:49,000
+we can think about job itself as one entity, right?
+
+25
+00:00:49,000 --> 00:00:51,000
+Maybe you can also think about
+
+26
+00:00:51,000 --> 00:00:53,000
+if you want to maintain the employee details,
+
+27
+00:00:53,000 --> 00:00:54,000
+which we are not doing,
+
+28
+00:00:54,000 --> 00:00:55,000
+but let's say if you have employee details,
+
+29
+00:00:55,000 --> 00:00:57,000
+so employee becomes one entity.
+
+30
+00:00:57,000 --> 00:00:59,000
+Your job is one entity.
+
+31
+00:00:59,000 --> 00:01:00,000
+Let's say you have an admin,
+
+32
+00:01:00,000 --> 00:01:02,000
+so admin becomes one entity.
+
+33
+00:01:02,000 --> 00:01:04,000
+Let's say you want to also represent some companies there.
+
+34
+00:01:04,000 --> 00:01:06,000
+So if you're an employer,
+
+35
+00:01:06,000 --> 00:01:08,000
+first, you have to talk about your own company,
+
+36
+00:01:08,000 --> 00:01:11,000
+why someone should join your company, right?
+
+37
+00:01:11,000 --> 00:01:13,000
+So this is your employer profile.
+
+38
+00:01:13,000 --> 00:01:15,000
+So that's your one entity.
+
+39
+00:01:15,000 --> 00:01:17,000
+So basically what we have is in your application,
+
+40
+00:01:17,000 --> 00:01:19,000
+we have different entities.
+
+41
+00:01:19,000 --> 00:01:21,000
+Each entity you can represent,
+
+42
+00:01:21,000 --> 00:01:23,000
+you can think about them as a resource, right?
+
+43
+00:01:23,000 --> 00:01:25,000
+You have a job resource, you have a employee resource,
+
+44
+00:01:25,000 --> 00:01:28,000
+you have a employer resource.
+
+45
+00:01:28,000 --> 00:01:30,000
+So what we are doing is we are just working
+
+46
+00:01:30,000 --> 00:01:32,000
+with a resource here, right?
+
+47
+00:01:32,000 --> 00:01:35,000
+Now when I say, "I want to add a new job,"
+
+48
+00:01:35,000 --> 00:01:37,000
+now that is one resource, right?
+
+49
+00:01:37,000 --> 00:01:39,000
+Now, whatever data you have in a server,
+
+50
+00:01:39,000 --> 00:01:41,000
+of course they will be changing, right?
+
+51
+00:01:41,000 --> 00:01:43,000
+So let's say if you talk about employee data.
+
+52
+00:01:43,000 --> 00:01:45,000
+So an employee,
+
+53
+00:01:45,000 --> 00:01:48,000
+maybe you have a section there which says current employer,
+
+54
+00:01:48,000 --> 00:01:50,000
+which is null at this point.
+
+55
+00:01:50,000 --> 00:01:52,000
+And after some time you got a job,
+
+56
+00:01:52,000 --> 00:01:55,000
+so the current employer will change to something else.
+
+57
+00:01:55,000 --> 00:01:57,000
+Maybe it'll become Google, Microsoft,
+
+58
+00:01:57,000 --> 00:01:58,000
+Telusko, doesn't matter.
+
+59
+00:01:58,000 --> 00:02:01,000
+So what happens is you update those resources, right?
+
+60
+00:02:01,000 --> 00:02:04,000
+But if you think about a moment,
+
+61
+00:02:04,000 --> 00:02:06,000
+at this moment, what's the value?
+
+62
+00:02:06,000 --> 00:02:09,000
+So let's say at this moment, the value is Microsoft.
+
+63
+00:02:09,000 --> 00:02:11,000
+Maybe after a few months, it becomes Telusko.
+
+64
+00:02:11,000 --> 00:02:13,000
+After a few months, it's become some other company.
+
+65
+00:02:13,000 --> 00:02:15,000
+So what we are doing is we are changing, right?
+
+66
+00:02:15,000 --> 00:02:17,000
+But at a given point,
+
+67
+00:02:17,000 --> 00:02:20,000
+you got some value that is called a state.
+
+68
+00:02:20,000 --> 00:02:22,000
+So example, at this point, if I say,
+
+69
+00:02:22,000 --> 00:02:24,000
+"Hey, give me the data about the employee,"
+
+70
+00:02:24,000 --> 00:02:27,000
+of course, employee will have a name, ID,
+
+71
+00:02:27,000 --> 00:02:29,000
+or some other details, which will be fixed, right?
+
+72
+00:02:29,000 --> 00:02:31,000
+You don't change your name often.
+
+73
+00:02:31,000 --> 00:02:35,000
+You might, but most of the time it is fixed.
+
+74
+00:02:35,000 --> 00:02:36,000
+You might be having an ID,
+
+75
+00:02:36,000 --> 00:02:38,000
+which is common for the application,
+
+76
+00:02:38,000 --> 00:02:38,000
+so it will be fixed.
+
+77
+00:02:38,000 --> 00:02:40,000
+Maybe you have address as well,
+
+78
+00:02:40,000 --> 00:02:43,000
+which will not change frequently, but it might.
+
+79
+00:02:43,000 --> 00:02:44,000
+But what about the employer?
+
+80
+00:02:44,000 --> 00:02:47,000
+You know, people do switch job every few months nowadays,
+
+81
+00:02:47,000 --> 00:02:49,000
+so that thing is keep changing, right?
+
+82
+00:02:49,000 --> 00:02:53,000
+But at a given point, we can call it as a state.
+
+83
+00:02:53,000 --> 00:02:55,000
+So if you fetch now, you will get a different state.
+
+84
+00:02:55,000 --> 00:02:58,000
+If you fetch later, you will get a different state.
+
+85
+00:02:58,000 --> 00:03:01,000
+So what you have to do is you just have to send the state
+
+86
+00:03:01,000 --> 00:03:02,000
+to the client
+
+87
+00:03:02,000 --> 00:03:04,000
+because client is asking for data, right?
+
+88
+00:03:04,000 --> 00:03:06,000
+So client says, "Hey, I want the details
+
+89
+00:03:06,000 --> 00:03:07,000
+about this employee."
+
+90
+00:03:07,000 --> 00:03:10,000
+So servers will say, "Okay, let me send the current state,"
+
+91
+00:03:10,000 --> 00:03:12,000
+so the server will send it.
+
+92
+00:03:12,000 --> 00:03:13,000
+So we are sending a state,
+
+93
+00:03:13,000 --> 00:03:16,000
+but also we have to send that in a proper format.
+
+94
+00:03:16,000 --> 00:03:17,000
+So we will say,
+
+95
+00:03:17,000 --> 00:03:20,000
+"Let's make it a proper presentable thing,
+
+96
+00:03:20,000 --> 00:03:22,000
+presentational state."
+
+97
+00:03:22,000 --> 00:03:24,000
+So that is your representational state.
+
+98
+00:03:24,000 --> 00:03:27,000
+And then we have to also make sure that we are transferring.
+
+99
+00:03:27,000 --> 00:03:30,000
+So it is transfer, that is REST, right?
+
+100
+00:03:30,000 --> 00:03:33,000
+So important thing is you are transferring state here.
+
+101
+00:03:33,000 --> 00:03:35,000
+Also, remember when you talk about REST as architecture,
+
+102
+00:03:35,000 --> 00:03:38,000
+you have to use it as a stateless,
+
+103
+00:03:38,000 --> 00:03:40,000
+which means when a client talk to the server
+
+104
+00:03:40,000 --> 00:03:42,000
+for the first time,
+
+105
+00:03:42,000 --> 00:03:44,000
+client has to mention all the details, right?
+
+106
+00:03:44,000 --> 00:03:45,000
+"Hey, I want this data.
+
+107
+00:03:45,000 --> 00:03:47,000
+Why I want this data because I have this login."
+
+108
+00:03:47,000 --> 00:03:50,000
+Maybe you have to also implement security there.
+
+109
+00:03:50,000 --> 00:03:52,000
+But when a client comes for the second time,
+
+110
+00:03:52,000 --> 00:03:55,000
+you cannot expect from the server that server knows you
+
+111
+00:03:55,000 --> 00:03:58,000
+because every request is stateless, okay?
+
+112
+00:03:58,000 --> 00:04:00,000
+So every time you talk to a server,
+
+113
+00:04:00,000 --> 00:04:01,000
+you have to talk about who you are,
+
+114
+00:04:01,000 --> 00:04:02,000
+why you're asking for it.
+
+115
+00:04:02,000 --> 00:04:04,000
+So that's one thing.
+
+116
+00:04:04,000 --> 00:04:09,000
+Next, in the REST API, we use something called a noun.
+
+117
+00:04:09,000 --> 00:04:11,000
+So example, if you talk about our code here,
+
+118
+00:04:11,000 --> 00:04:15,000
+we were using view all jobs, add a job.
+
+119
+00:04:15,000 --> 00:04:17,000
+So basically we were using actions, right?
+
+120
+00:04:17,000 --> 00:04:21,000
+So in the URL, we were basically using actions, words.
+
+121
+00:04:21,000 --> 00:04:24,000
+But now in REST API, you will not be using actions.
+
+122
+00:04:24,000 --> 00:04:27,000
+We'll be using something called a noun.
+
+123
+00:04:27,000 --> 00:04:29,000
+Example, let's say if you want details about the jobs,
+
+124
+00:04:29,000 --> 00:04:30,000
+you can simply say:
+
+125
+00:04:30,000 --> 00:04:32,000
+localhost:8080/jobs.
+
+126
+00:04:32,000 --> 00:04:35,000
+If you want to add a job, you will say:
+
+127
+00:04:35,000 --> 00:04:37,000
+localhost:8080/job.
+
+128
+00:04:37,000 --> 00:04:40,000
+If you want to get one job, you will say:
+
+129
+00:04:40,000 --> 00:04:42,000
+localhost:8080/job.
+
+130
+00:04:42,000 --> 00:04:44,000
+But is it matching with the add job?
+
+131
+00:04:44,000 --> 00:04:45,000
+How do you differentiate between this two?
+
+132
+00:04:45,000 --> 00:04:48,000
+Add job also has the same URL,
+
+133
+00:04:48,000 --> 00:04:50,000
+get job also has the same URL,
+
+134
+00:04:50,000 --> 00:04:51,000
+how it will work?
+
+135
+00:04:51,000 --> 00:04:54,000
+So the URL is same, but the methods will change.
+
+136
+00:04:54,000 --> 00:04:56,000
+Now, which method I'm talking about?
+
+137
+00:04:56,000 --> 00:04:58,000
+See, REST uses something called HTTP.
+
+138
+00:04:58,000 --> 00:05:01,000
+And we all know the HTTP is Hyper Text Transfer Protocol,
+
+139
+00:05:01,000 --> 00:05:04,000
+which are protocol which we use to access the web.
+
+140
+00:05:04,000 --> 00:05:07,000
+Now in HTTP, we have different methods.
+
+141
+00:05:07,000 --> 00:05:10,000
+We have a lot of methods, but then few are important,
+
+142
+00:05:10,000 --> 00:05:13,000
+and let's discuss about those things in the next video.
+
+143
+00:05:13,000 --> 00:05:15,000
+But if we talk about REST API,
+
+144
+00:05:15,000 --> 00:05:17,000
+what we deal is we deal with resources.
+
+145
+00:05:17,000 --> 00:05:20,000
+And what you send data is your states.
+
+146
+00:05:20,000 --> 00:05:23,000
+You transfer the states from server to client,
+
+147
+00:05:23,000 --> 00:05:25,000
+or maybe you get a new state from the client to the server.
+
+148
+00:05:25,000 --> 00:05:28,000
+So the important thing is from our server,
+
+149
+00:05:28,000 --> 00:05:29,000
+we are not going to return JSP,
+
+150
+00:05:29,000 --> 00:05:31,000
+we are going to return data, the current state.
+
+151
+00:05:31,000 --> 00:05:32,000
+Now to represent this,
+
+152
+00:05:32,000 --> 00:05:34,000
+we have two different formats, which are very famous,
+
+153
+00:05:34,000 --> 00:05:36,000
+JSON and XML.
+
+154
+00:05:36,000 --> 00:05:37,000
+XML is a old format.
+
+155
+00:05:37,000 --> 00:05:40,000
+JSON is a new format because it is easy to read.
+
+156
+00:05:40,000 --> 00:05:43,000
+It takes less memory to represent the data.
+
+157
+00:05:43,000 --> 00:05:46,000
+And this is how basically a simple JSON looks like, right?
+
+158
+00:05:46,000 --> 00:05:48,000
+So this is a JSON data.
+
+159
+00:05:48,000 --> 00:05:50,000
+And if you want the similar part for the XML,
+
+160
+00:05:50,000 --> 00:05:51,000
+this is what XML looks like.
+
+161
+00:05:51,000 --> 00:05:54,000
+Now you decide which one looks better, right?
+
+162
+00:05:54,000 --> 00:05:56,000
+So JSON looks better than the XML, right?
+
+163
+00:05:56,000 --> 00:05:58,000
+Now JSON is basically stands
+
+164
+00:05:58,000 --> 00:06:00,000
+for JavaScript Object Notation.
+
+165
+00:06:00,000 --> 00:06:02,000
+I know you'll be thinking this is only used
+
+166
+00:06:02,000 --> 00:06:03,000
+for the JavaScript.
+
+167
+00:06:03,000 --> 00:06:05,000
+No, this is just a notation,
+
+168
+00:06:05,000 --> 00:06:07,000
+which came from the JavaScript object.
+
+169
+00:06:07,000 --> 00:06:10,000
+So we got the name, but we can use this type of data
+
+170
+00:06:10,000 --> 00:06:12,000
+for any other programming language.
+
+171
+00:06:12,000 --> 00:06:14,000
+But still we have a question on the HTTP methods.
+
+172
+00:06:14,000 --> 00:06:16,000
+Let's discuss that in the next video.
+
diff --git a/15 - REST using Spring Boot/003 Http Methods_en.srt b/15 - REST using Spring Boot/003 Http Methods_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..449a05d3fabce1f4cd065a481cd770c904a2f086
--- /dev/null
+++ b/15 - REST using Spring Boot/003 Http Methods_en.srt	
@@ -0,0 +1,280 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: So let's talk about H-T-T-P,
+
+3
+00:00:05,000 --> 00:00:08,000
+which stands for Hypertext Transfer Protocol.
+
+4
+00:00:08,000 --> 00:00:09,000
+Of course, we are not here to discuss about,
+
+5
+00:00:09,000 --> 00:00:10,000
+what is a protocol?
+
+6
+00:00:10,000 --> 00:00:11,000
+We are here to discuss,
+
+7
+00:00:11,000 --> 00:00:15,000
+what are the methods which we can use to work with HTTP.
+
+8
+00:00:15,000 --> 00:00:16,000
+See if you remember,
+
+9
+00:00:16,000 --> 00:00:19,000
+when we were building this application for Job,
+
+10
+00:00:19,000 --> 00:00:22,000
+we have used two methods: the GET and the POST.
+
+11
+00:00:22,000 --> 00:00:24,000
+Now, when we want to fetch data from the server,
+
+12
+00:00:24,000 --> 00:00:26,000
+we use something called a GET request.
+
+13
+00:00:26,000 --> 00:00:29,000
+So in the CRUD operations, if you want to read something,
+
+14
+00:00:29,000 --> 00:00:31,000
+we use the GET method.
+
+15
+00:00:31,000 --> 00:00:33,000
+But what if you want to create a resource?
+
+16
+00:00:33,000 --> 00:00:36,000
+So you want to send some data from client to server,
+
+17
+00:00:36,000 --> 00:00:37,000
+which maybe you want to save
+
+18
+00:00:37,000 --> 00:00:38,000
+that in a database or something.
+
+19
+00:00:38,000 --> 00:00:40,000
+But if you want to send data,
+
+20
+00:00:40,000 --> 00:00:43,000
+if you want to create something on the server, we use POST.
+
+21
+00:00:43,000 --> 00:00:45,000
+So POST is for sending data.
+
+22
+00:00:45,000 --> 00:00:48,000
+Now, we can also use it for updating data,
+
+23
+00:00:48,000 --> 00:00:50,000
+but mostly we use POST to create data.
+
+24
+00:00:50,000 --> 00:00:51,000
+But what if you want to update something?
+
+25
+00:00:51,000 --> 00:00:54,000
+In that case, you can use PUT.
+
+26
+00:00:54,000 --> 00:00:56,000
+So you can use PUT request for the updating.
+
+27
+00:00:56,000 --> 00:00:58,000
+And then we have a DELETE as well, right?
+
+28
+00:00:58,000 --> 00:01:00,000
+So in the HTTP, we also have a DELETE method.
+
+29
+00:01:00,000 --> 00:01:02,000
+So just like CRUD, we have DELETE-DELETE,
+
+30
+00:01:02,000 --> 00:01:05,000
+so we have it the same for the HTTP.
+
+31
+00:01:05,000 --> 00:01:06,000
+So in HTTP, we have different methods.
+
+32
+00:01:06,000 --> 00:01:11,000
+The famous four is POST, GET, PUT, and DELETE.
+
+33
+00:01:11,000 --> 00:01:15,000
+So if you want to use that in the Spring Boot,
+
+34
+00:01:15,000 --> 00:01:17,000
+we have talked about GetMapping and PostMapping.
+
+35
+00:01:17,000 --> 00:01:18,000
+What about PUT?
+
+36
+00:01:18,000 --> 00:01:19,000
+So we have PutMapping.
+
+37
+00:01:19,000 --> 00:01:21,000
+What if you have DELETE?
+
+38
+00:01:21,000 --> 00:01:22,000
+You have DeleteMapping.
+
+39
+00:01:22,000 --> 00:01:24,000
+So now, let's say if we talk about the URL,
+
+40
+00:01:24,000 --> 00:01:27,000
+which we talked about in the rest,
+
+41
+00:01:27,000 --> 00:01:29,000
+if you want to add a new job,
+
+42
+00:01:29,000 --> 00:01:32,000
+you will use your URL /job, right?
+
+43
+00:01:34,000 --> 00:01:34,000
+That's for create.
+
+44
+00:01:34,000 --> 00:01:39,000
+If you want to get a particular job, same URL /job.
+
+45
+00:01:39,000 --> 00:01:40,000
+Both are same.
+
+46
+00:01:40,000 --> 00:01:42,000
+The difference is the methods.
+
+47
+00:01:42,000 --> 00:01:44,000
+For the creation of the job, you will use POST.
+
+48
+00:01:44,000 --> 00:01:47,000
+For the getting the job, you will use GET method.
+
+49
+00:01:47,000 --> 00:01:48,000
+Two different methods.
+
+50
+00:01:48,000 --> 00:01:49,000
+So from the client side as well,
+
+51
+00:01:49,000 --> 00:01:51,000
+you have to mention POST.
+
+52
+00:01:51,000 --> 00:01:53,000
+On the server side also you have to mention POST.
+
+53
+00:01:53,000 --> 00:01:54,000
+In the server, we will be using PostMapping.
+
+54
+00:01:54,000 --> 00:01:55,000
+But the question arises,
+
+55
+00:01:55,000 --> 00:01:57,000
+how we are going to use these methods?
+
+56
+00:01:57,000 --> 00:01:58,000
+If we talk about your browser,
+
+57
+00:01:58,000 --> 00:02:00,000
+in the browser, we do have GET.
+
+58
+00:02:00,000 --> 00:02:02,000
+So by default, the URL when you use,
+
+59
+00:02:02,000 --> 00:02:04,000
+it will throw a GET request.
+
+60
+00:02:04,000 --> 00:02:05,000
+But what about the POST?
+
+61
+00:02:05,000 --> 00:02:08,000
+To send the POST request, we have to create a Form.
+
+62
+00:02:08,000 --> 00:02:10,000
+But then what if you don't want to get a form?
+
+63
+00:02:10,000 --> 00:02:11,000
+What if you want to test it?
+
+64
+00:02:11,000 --> 00:02:14,000
+So, browser will not be having that option, right?
+
+65
+00:02:14,000 --> 00:02:16,000
+And that's why we have to look for a client.
+
+66
+00:02:16,000 --> 00:02:18,000
+And that's where this client can be a React application
+
+67
+00:02:18,000 --> 00:02:20,000
+or this client can be your testing client,
+
+68
+00:02:20,000 --> 00:02:22,000
+let's say Postman.
+
+69
+00:02:22,000 --> 00:02:23,000
+So we'll see, how do we use Postman,
+
+70
+00:02:23,000 --> 00:02:26,000
+and what we are trying to build here in the next video.
+
diff --git a/15 - REST using Spring Boot/004 Source-Code.url b/15 - REST using Spring Boot/004 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..7db762151df8db77e9b2cf4ed5497ee142b1350a
--- /dev/null
+++ b/15 - REST using Spring Boot/004 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/main/React%20UI
\ No newline at end of file
diff --git a/15 - REST using Spring Boot/004 Understanding the React UI_en.srt b/15 - REST using Spring Boot/004 Understanding the React UI_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..b52e5caf4c506cf904c3fd7cc3239c21534fb762
--- /dev/null
+++ b/15 - REST using Spring Boot/004 Understanding the React UI_en.srt	
@@ -0,0 +1,1092 @@
+1
+00:00:00,000 --> 00:00:03,000
+(upbeat music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: So now we have talked about what is rest?
+
+3
+00:00:05,000 --> 00:00:07,000
+We have talked about different HDP methods.
+
+4
+00:00:07,000 --> 00:00:10,000
+Now let's start building the application.
+
+5
+00:00:10,000 --> 00:00:12,000
+But the thing is, before we write the backend, we need
+
+6
+00:00:12,000 --> 00:00:14,000
+to understand how do we test it in the front end.
+
+7
+00:00:14,000 --> 00:00:17,000
+Now basically when you talk about real application,
+
+8
+00:00:17,000 --> 00:00:20,000
+the way we are building this project, we have two things,
+
+9
+00:00:20,000 --> 00:00:22,000
+the front end and a back end.
+
+10
+00:00:22,000 --> 00:00:24,000
+I do have a front end ready with me.
+
+11
+00:00:24,000 --> 00:00:25,000
+Of course not the entire front end.
+
+12
+00:00:25,000 --> 00:00:28,000
+We are going to build this step by step.
+
+13
+00:00:28,000 --> 00:00:31,000
+Initially we'll focus on fetching all the job post.
+
+14
+00:00:31,000 --> 00:00:33,000
+Remember when we talked about the job portal
+
+15
+00:00:33,000 --> 00:00:36,000
+and then we had two buttons, view all jobs
+
+16
+00:00:36,000 --> 00:00:39,000
+and then we had the button for add job.
+
+17
+00:00:39,000 --> 00:00:42,000
+Now when you click on view all job,
+
+18
+00:00:42,000 --> 00:00:44,000
+basically it'll show you all the requirements
+
+19
+00:00:44,000 --> 00:00:45,000
+we have, right?
+
+20
+00:00:45,000 --> 00:00:46,000
+Now here, basically we have
+
+21
+00:00:46,000 --> 00:00:49,000
+a React application as a front end,
+
+22
+00:00:49,000 --> 00:00:50,000
+which will show all the jobs.
+
+23
+00:00:50,000 --> 00:00:53,000
+And I just want to show you the code here.
+
+24
+00:00:53,000 --> 00:00:54,000
+Of course, we are not here to learn React,
+
+25
+00:00:54,000 --> 00:00:57,000
+but I will show you the code, what we have done
+
+26
+00:00:57,000 --> 00:00:58,000
+and how do you run this project.
+
+27
+00:00:58,000 --> 00:01:01,000
+You will find this project in your resources.
+
+28
+00:01:01,000 --> 00:01:02,000
+So please download this project.
+
+29
+00:01:02,000 --> 00:01:05,000
+Now, when you get this project, you can use GitClone
+
+30
+00:01:05,000 --> 00:01:07,000
+or you can download the zip file, your choice.
+
+31
+00:01:07,000 --> 00:01:10,000
+Now, when you get this project on your machine,
+
+32
+00:01:10,000 --> 00:01:11,000
+just open that in VS code and open the terminal
+
+33
+00:01:11,000 --> 00:01:14,000
+because this is where we will write a code.
+
+34
+00:01:14,000 --> 00:01:15,000
+But before we run the code or
+
+35
+00:01:15,000 --> 00:01:18,000
+before we, oh, let's run the code first.
+
+36
+00:01:18,000 --> 00:01:22,000
+So what I will do is I will, I want to run a server here.
+
+37
+00:01:22,000 --> 00:01:26,000
+Now since we don't have a backend server to work with this,
+
+38
+00:01:26,000 --> 00:01:29,000
+so we created something in this page itself, which liked
+
+39
+00:01:29,000 --> 00:01:30,000
+as a backend, the fake backend.
+
+40
+00:01:30,000 --> 00:01:33,000
+So what I will do is I will open a new terminal here
+
+41
+00:01:33,000 --> 00:01:34,000
+and I will pass a command.
+
+42
+00:01:34,000 --> 00:01:37,000
+So we are going to use a json-server.
+
+43
+00:01:37,000 --> 00:01:40,000
+Now by default, this will not be available in your machine.
+
+44
+00:01:40,000 --> 00:01:42,000
+So you have to make sure that you download this.
+
+45
+00:01:42,000 --> 00:01:46,000
+So you can say NPM install, you can set it globally
+
+46
+00:01:46,000 --> 00:01:50,000
+and you can download json-server.
+
+47
+00:01:50,000 --> 00:01:52,000
+So basically when you, when you install this,
+
+48
+00:01:52,000 --> 00:01:54,000
+you will be having json-server in your machine.
+
+49
+00:01:54,000 --> 00:01:56,000
+I do have it, I will not run this command.
+
+50
+00:01:56,000 --> 00:01:58,000
+Now the command which I want to run, to run the json-server,
+
+51
+00:01:58,000 --> 00:02:01,000
+which is a fake server for us, I would say json-server,
+
+52
+00:02:01,000 --> 00:02:03,000
+-: -watch.
+
+53
+00:02:03,000 --> 00:02:05,000
+And then when you say you have a json-server,
+
+54
+00:02:05,000 --> 00:02:07,000
+you need to have some data, right?
+
+55
+00:02:07,000 --> 00:02:11,000
+JSON Data, so if you can see we have data db.json here
+
+56
+00:02:11,000 --> 00:02:13,000
+and that we have some data in the JSON file.
+
+57
+00:02:13,000 --> 00:02:17,000
+Okay, not lot, we have only three or four.
+
+58
+00:02:17,000 --> 00:02:18,000
+I can say two IDs similar,
+
+59
+00:02:18,000 --> 00:02:20,000
+maybe I can just change it to two.
+
+60
+00:02:21,000 --> 00:02:24,000
+This should be three and four.
+
+61
+00:02:24,000 --> 00:02:26,000
+So we've got different IDs here,
+
+62
+00:02:26,000 --> 00:02:28,000
+I will save it some dummy data just to test
+
+63
+00:02:28,000 --> 00:02:30,000
+if my front end is working properly
+
+64
+00:02:30,000 --> 00:02:33,000
+and I will say watch, then I will mention the name
+
+65
+00:02:33,000 --> 00:02:35,000
+of the file, which is db.json,
+
+66
+00:02:35,000 --> 00:02:38,000
+by default it'll run on port number 3000.
+
+67
+00:02:38,000 --> 00:02:40,000
+I don't wanna do that because my React application,
+
+68
+00:02:40,000 --> 00:02:43,000
+the front end will run on port number 3000.
+
+69
+00:02:43,000 --> 00:02:45,000
+So I want to run this on a different port.
+
+70
+00:02:45,000 --> 00:02:48,000
+So I will say Port 8,000, any port number will do,
+
+71
+00:02:48,000 --> 00:02:51,000
+which is which is available, and click on enter.
+
+72
+00:02:51,000 --> 00:02:53,000
+So it'll make sure that your backend is ready.
+
+73
+00:02:53,000 --> 00:02:56,000
+So if you want to access any post, you can say we have
+
+74
+00:02:56,000 --> 00:02:58,000
+a what we call resources here.
+
+75
+00:02:58,000 --> 00:03:02,000
+Remember in the rest video we have talked about resources.
+
+76
+00:03:02,000 --> 00:03:05,000
+So if you want to get all the posts here, you have
+
+77
+00:03:05,000 --> 00:03:08,000
+to hit the URL, which is HTTP colon, localized colon,
+
+78
+00:03:08,000 --> 00:03:10,000
+8,000 slash posts.
+
+79
+00:03:10,000 --> 00:03:14,000
+We have to use noun, not get AllPosts or show AllPostss.
+
+80
+00:03:14,000 --> 00:03:16,000
+You have to say posts, so my backend is running,
+
+81
+00:03:16,000 --> 00:03:17,000
+the fake backend is running.
+
+82
+00:03:17,000 --> 00:03:19,000
+Now we have to run the front end.
+
+83
+00:03:19,000 --> 00:03:21,000
+So I will go back to my original terminal
+
+84
+00:03:21,000 --> 00:03:25,000
+and here I will run the front end.
+
+85
+00:03:25,000 --> 00:03:27,000
+First of all, I have to say NPM install
+
+86
+00:03:27,000 --> 00:03:30,000
+to install all the packages, which will take some time.
+
+87
+00:03:30,000 --> 00:03:31,000
+So you can see node modules is getting created now.
+
+88
+00:03:31,000 --> 00:03:34,000
+I'm doing this because when you get the project you will
+
+89
+00:03:34,000 --> 00:03:35,000
+not get node modules.
+
+90
+00:03:35,000 --> 00:03:37,000
+So you have to run this command first NPM install.
+
+91
+00:03:37,000 --> 00:03:40,000
+So if you are new to the world of JavaScript,
+
+92
+00:03:40,000 --> 00:03:42,000
+basically this is a React application which
+
+93
+00:03:42,000 --> 00:03:46,000
+behind the scene the language is JavaScript.
+
+94
+00:03:46,000 --> 00:03:49,000
+And if you want to use any of the feature, basically we have
+
+95
+00:03:49,000 --> 00:03:50,000
+to install those packages.
+
+96
+00:03:50,000 --> 00:03:53,000
+Now React itself is a library, so you have to install it.
+
+97
+00:03:53,000 --> 00:03:55,000
+And where do you find all the required
+
+98
+00:03:55,000 --> 00:03:58,000
+packages is in package.json.
+
+99
+00:03:58,000 --> 00:04:01,000
+Now if you try to compare this with Java World,
+
+100
+00:04:01,000 --> 00:04:03,000
+we got something called Mavin.
+
+101
+00:04:03,000 --> 00:04:05,000
+In Mavin we mentioned what dependency you need.
+
+102
+00:04:05,000 --> 00:04:08,000
+In the same way in the world of JavaScript,
+
+103
+00:04:08,000 --> 00:04:09,000
+we use package.json.
+
+104
+00:04:09,000 --> 00:04:13,000
+And you can see we need React, here is React.
+
+105
+00:04:13,000 --> 00:04:13,000
+So basically we need React.
+
+106
+00:04:13,000 --> 00:04:17,000
+We need react-dom to change the elements of HTML.
+
+107
+00:04:17,000 --> 00:04:22,000
+We need a router-dom to specify the navigations,
+
+108
+00:04:22,000 --> 00:04:24,000
+which links to click and what will
+
+109
+00:04:24,000 --> 00:04:25,000
+happen when you click on that link.
+
+110
+00:04:25,000 --> 00:04:27,000
+And we also have a jsonserver here,
+
+111
+00:04:27,000 --> 00:04:30,000
+which is a fake backend, which we are using now.
+
+112
+00:04:30,000 --> 00:04:32,000
+And yeah, so we have a lot of dependencies
+
+113
+00:04:32,000 --> 00:04:35,000
+and the version of React I'm using is React 18.
+
+114
+00:04:35,000 --> 00:04:38,000
+So you have to make sure that you have node installed in
+
+115
+00:04:38,000 --> 00:04:39,000
+your machine, latest version of Node.
+
+116
+00:04:39,000 --> 00:04:41,000
+Okay, so I have installed the packages, now it's time
+
+117
+00:04:41,000 --> 00:04:44,000
+to start the React application.
+
+118
+00:04:44,000 --> 00:04:45,000
+So I will say NPM start.
+
+119
+00:04:45,000 --> 00:04:47,000
+Now it'll load the application
+
+120
+00:04:47,000 --> 00:04:51,000
+and boom, you can see we got this page here.
+
+121
+00:04:51,000 --> 00:04:53,000
+If you are not able to see this page,
+
+122
+00:04:53,000 --> 00:04:55,000
+I mean when you run this on your machine,
+
+123
+00:04:55,000 --> 00:04:58,000
+maybe there's something wrong with the json-server
+
+124
+00:04:58,000 --> 00:05:00,000
+because if you don't run json-server,
+
+125
+00:05:00,000 --> 00:05:02,000
+you will get the other here.
+
+126
+00:05:02,000 --> 00:05:03,000
+That server is not available or something.
+
+127
+00:05:03,000 --> 00:05:04,000
+So basically you have to make sure that you have
+
+128
+00:05:04,000 --> 00:05:08,000
+your json-server running and you will get this data here.
+
+129
+00:05:08,000 --> 00:05:11,000
+But mind you, the data which you are getting here is coming
+
+130
+00:05:11,000 --> 00:05:14,000
+from the fake server, not from the server, which we're going
+
+131
+00:05:14,000 --> 00:05:17,000
+to build in Spring Boot, okay?
+
+132
+00:05:17,000 --> 00:05:19,000
+Which we'll do, in fact we do have this server,
+
+133
+00:05:19,000 --> 00:05:22,000
+but that is sending the JC pages.
+
+134
+00:05:22,000 --> 00:05:23,000
+We don't want that, right?
+
+135
+00:05:23,000 --> 00:05:25,000
+We want our server to send the JSON.
+
+136
+00:05:25,000 --> 00:05:28,000
+So instead of using this fake database here, we are going
+
+137
+00:05:28,000 --> 00:05:30,000
+to use our server.
+
+138
+00:05:30,000 --> 00:05:32,000
+Okay, but this is working,
+
+139
+00:05:32,000 --> 00:05:34,000
+but let's understand what is happening here.
+
+140
+00:05:34,000 --> 00:05:37,000
+So the way you work with React is React is simply a library.
+
+141
+00:05:37,000 --> 00:05:40,000
+So which provides you a feature of component based designing
+
+142
+00:05:40,000 --> 00:05:43,000
+where you have your HTML page, okay?
+
+143
+00:05:43,000 --> 00:05:44,000
+So it's not like we are running away from HTML.
+
+144
+00:05:44,000 --> 00:05:47,000
+The page which you see here is an HTML page.
+
+145
+00:05:47,000 --> 00:05:49,000
+It's just that all these things which are there
+
+146
+00:05:49,000 --> 00:05:50,000
+are the components,
+
+147
+00:05:50,000 --> 00:05:52,000
+this is one of the components, these are the components
+
+148
+00:05:52,000 --> 00:05:54,000
+and these are reusable components.
+
+149
+00:05:54,000 --> 00:05:58,000
+So you create a component once and multiple times, okay?
+
+150
+00:05:58,000 --> 00:05:59,000
+So you can say one glass
+
+151
+00:05:59,000 --> 00:06:01,000
+and multiple objects in Java world,
+
+152
+00:06:01,000 --> 00:06:02,000
+that's what we are doing here.
+
+153
+00:06:02,000 --> 00:06:04,000
+And to achieve that, the main file,
+
+154
+00:06:04,000 --> 00:06:06,000
+you can see we have a public folder here.
+
+155
+00:06:06,000 --> 00:06:08,000
+This is the file which is getting displayed.
+
+156
+00:06:08,000 --> 00:06:10,000
+And if you see there's no content here,
+
+157
+00:06:10,000 --> 00:06:12,000
+all this thing here is a comment.
+
+158
+00:06:12,000 --> 00:06:15,000
+So if I remove this, this is your HTML page, okay?
+
+159
+00:06:15,000 --> 00:06:17,000
+That's the fun part of React.
+
+160
+00:06:17,000 --> 00:06:20,000
+This is your HTML page, which you can see here, okay?
+
+161
+00:06:20,000 --> 00:06:22,000
+This is a page which is displayed with the help
+
+162
+00:06:22,000 --> 00:06:24,000
+of index or HTML.
+
+163
+00:06:24,000 --> 00:06:25,000
+But how all this content are coming,
+
+164
+00:06:25,000 --> 00:06:28,000
+we have not specified anything in the deal directory.
+
+165
+00:06:28,000 --> 00:06:31,000
+You can see div is empty or root tag, so this empty.
+
+166
+00:06:31,000 --> 00:06:35,000
+So it is happening because of one thing.
+
+167
+00:06:35,000 --> 00:06:38,000
+So if you see for this index.html,
+
+168
+00:06:38,000 --> 00:06:40,000
+since we are using React, there is a file.
+
+169
+00:06:40,000 --> 00:06:44,000
+So if you open SRC, we got something called index.js.
+
+170
+00:06:44,000 --> 00:06:48,000
+Now this is responsible to change the content of HTML page.
+
+171
+00:06:48,000 --> 00:06:50,000
+And the way it is doing that is
+
+172
+00:06:50,000 --> 00:06:51,000
+with the help of this root tag.
+
+173
+00:06:51,000 --> 00:06:53,000
+So if you can see we have diff, which has ID root.
+
+174
+00:06:53,000 --> 00:06:56,000
+So whatever you want to change with the help
+
+175
+00:06:56,000 --> 00:06:57,000
+of dom manipulation, basically you can
+
+176
+00:06:57,000 --> 00:06:59,000
+or document manipulation,
+
+177
+00:06:59,000 --> 00:07:01,000
+you can basically change the content of this deal.
+
+178
+00:07:01,000 --> 00:07:04,000
+It is happening because of this index.js here.
+
+179
+00:07:04,000 --> 00:07:06,000
+In which if you can see we are getting hold on
+
+180
+00:07:06,000 --> 00:07:10,000
+our root ID, root tag basically the deal.
+
+181
+00:07:10,000 --> 00:07:14,000
+And then we are saying root.render.
+
+182
+00:07:14,000 --> 00:07:17,000
+So basically we are changing the content of the root div
+
+183
+00:07:17,000 --> 00:07:19,000
+and what we are putting there, we are putting app.
+
+184
+00:07:19,000 --> 00:07:22,000
+Now this is weird, right, so basically this looks
+
+185
+00:07:22,000 --> 00:07:24,000
+like HTML tag, but with a capital letter.
+
+186
+00:07:24,000 --> 00:07:26,000
+So this is not actually HTML,
+
+187
+00:07:26,000 --> 00:07:31,000
+but we are able to use HTML tags with JavaScript.
+
+188
+00:07:31,000 --> 00:07:35,000
+Okay, so how it is coming, so why, what is happening here?
+
+189
+00:07:35,000 --> 00:07:38,000
+And again, I'm not here to teach you React,
+
+190
+00:07:38,000 --> 00:07:40,000
+I'm just giving you a glimpse of
+
+191
+00:07:40,000 --> 00:07:42,000
+how React looks like in the upcoming videos.
+
+192
+00:07:42,000 --> 00:07:43,000
+We're not going to focus much on the UI
+
+193
+00:07:43,000 --> 00:07:45,000
+but I thought, let me spend some time,
+
+194
+00:07:45,000 --> 00:07:48,000
+maybe it'll motivate you to learn react more.
+
+195
+00:07:48,000 --> 00:07:50,000
+So we, we can see we are rendering app here.
+
+196
+00:07:50,000 --> 00:07:53,000
+Now if you go back to app, what is app?
+
+197
+00:07:53,000 --> 00:07:55,000
+So if you go to app.js,
+
+198
+00:07:55,000 --> 00:07:58,000
+what we are doing is we are basically replacing
+
+199
+00:07:58,000 --> 00:08:01,000
+the root with the app.
+
+200
+00:08:01,000 --> 00:08:03,000
+And what is app, app is basically
+
+201
+00:08:03,000 --> 00:08:05,000
+a component, a function component.
+
+202
+00:08:05,000 --> 00:08:08,000
+That's what you create a component in the React.
+
+203
+00:08:08,000 --> 00:08:11,000
+We are basically saying that the app will be replaced
+
+204
+00:08:11,000 --> 00:08:12,000
+by this thing.
+
+205
+00:08:12,000 --> 00:08:15,000
+Now what is this thing, if you can see we have AllPosts.
+
+206
+00:08:15,000 --> 00:08:18,000
+So whatever AllPosts will give will be there in the app.
+
+207
+00:08:18,000 --> 00:08:20,000
+So you can see we are creating a layer of out of layer,
+
+208
+00:08:20,000 --> 00:08:23,000
+but ultimately it'll just add the data on the page.
+
+209
+00:08:23,000 --> 00:08:27,000
+But what is AllPosts, go back into components.
+
+210
+00:08:27,000 --> 00:08:29,000
+We have Allposts here in the AllPosts,
+
+211
+00:08:29,000 --> 00:08:34,000
+if you can see we are basically hitting a URL, okay?
+
+212
+00:08:35,000 --> 00:08:37,000
+So we are using axios for that to hit the URL, which is kind
+
+213
+00:08:37,000 --> 00:08:40,000
+of a fetch in JavaScript.
+
+214
+00:08:40,000 --> 00:08:44,000
+But what we are doing is we are basically hitting this URL,
+
+215
+00:08:44,000 --> 00:08:46,000
+which is localized colon 8,000 slash post.
+
+216
+00:08:46,000 --> 00:08:47,000
+This looks familiar, right?
+
+217
+00:08:47,000 --> 00:08:51,000
+So what we have done is when you ran the json-server,
+
+218
+00:08:51,000 --> 00:08:52,000
+we were using this URL.
+
+219
+00:08:52,000 --> 00:08:54,000
+Now of course this URL will change.
+
+220
+00:08:54,000 --> 00:08:56,000
+We build this spring application.
+
+221
+00:08:56,000 --> 00:08:58,000
+Once we have our the backend ready,
+
+222
+00:08:58,000 --> 00:09:00,000
+it'll have a different port number.
+
+223
+00:09:00,000 --> 00:09:02,000
+So we'll be updating that here.
+
+224
+00:09:02,000 --> 00:09:04,000
+But at this point to make it work,
+
+225
+00:09:04,000 --> 00:09:05,000
+we are using this port number.
+
+226
+00:09:05,000 --> 00:09:07,000
+So what we are doing is we are
+
+227
+00:09:07,000 --> 00:09:11,000
+sending this request, it'll return you some data.
+
+228
+00:09:11,000 --> 00:09:12,000
+And with that data,
+
+229
+00:09:12,000 --> 00:09:15,000
+if you can see we are running a loop here.
+
+230
+00:09:15,000 --> 00:09:17,000
+So basically we are using a map.
+
+231
+00:09:17,000 --> 00:09:19,000
+So all the data which you get in the post,
+
+232
+00:09:19,000 --> 00:09:20,000
+we are running a map.
+
+233
+00:09:20,000 --> 00:09:23,000
+And for each element we are fetching
+
+234
+00:09:23,000 --> 00:09:26,000
+its profile.
+
+235
+00:09:26,000 --> 00:09:28,000
+We are also fetching its id.
+
+236
+00:09:28,000 --> 00:09:31,000
+So we are fetching the id, we are fetching the profile.
+
+237
+00:09:31,000 --> 00:09:33,000
+We are fetching the description.
+
+238
+00:09:33,000 --> 00:09:34,000
+We are fetching the experience,
+
+239
+00:09:34,000 --> 00:09:37,000
+we are fetching the technologies.
+
+240
+00:09:37,000 --> 00:09:39,000
+Now the tech stack itself is added, right?
+
+241
+00:09:39,000 --> 00:09:40,000
+So it'll be again, map.
+
+242
+00:09:40,000 --> 00:09:45,000
+And because of this we are able to get this one post here.
+
+243
+00:09:45,000 --> 00:09:49,000
+So this post is coming because of that one code.
+
+244
+00:09:49,000 --> 00:09:51,000
+But then this is not happening once,
+
+245
+00:09:51,000 --> 00:09:53,000
+it is happening multiple times now, depend upon
+
+246
+00:09:53,000 --> 00:09:55,000
+how much JSON data you have, that many times it'll run
+
+247
+00:09:55,000 --> 00:09:57,000
+and it'll run, render each component.
+
+248
+00:09:57,000 --> 00:10:00,000
+And that's why you can see all the components here.
+
+249
+00:10:00,000 --> 00:10:01,000
+If you have more data,
+
+250
+00:10:01,000 --> 00:10:04,000
+you will automatically see different data here.
+
+251
+00:10:04,000 --> 00:10:07,000
+Okay, so that's the beauty of React here.
+
+252
+00:10:07,000 --> 00:10:09,000
+Again, as I mentioned
+
+253
+00:10:09,000 --> 00:10:11,000
+before, we are not going to focus more on react in future,
+
+254
+00:10:11,000 --> 00:10:15,000
+but just to show you the glimpse here, what is happening.
+
+255
+00:10:15,000 --> 00:10:18,000
+Important is when I give you the project,
+
+256
+00:10:18,000 --> 00:10:20,000
+I will give you the entire project here.
+
+257
+00:10:20,000 --> 00:10:22,000
+You just have to run this and you just have
+
+258
+00:10:22,000 --> 00:10:24,000
+to change a port number, whatever you're using.
+
+259
+00:10:24,000 --> 00:10:26,000
+But we have one problem.
+
+260
+00:10:26,000 --> 00:10:28,000
+What if you don't want to build direct application?
+
+261
+00:10:28,000 --> 00:10:31,000
+What if you want to build for mobile?
+
+262
+00:10:31,000 --> 00:10:33,000
+Then should we also create a mobile project here
+
+263
+00:10:33,000 --> 00:10:35,000
+where I will show you, okay, this is
+
+264
+00:10:35,000 --> 00:10:36,000
+how you create a mobile application.
+
+265
+00:10:36,000 --> 00:10:38,000
+We can, but then it'll make this course very lengthy, right?
+
+266
+00:10:38,000 --> 00:10:40,000
+I want you to finish this course, not like you have
+
+267
+00:10:40,000 --> 00:10:44,000
+to spend your entire four years doing a PhD in this course.
+
+268
+00:10:44,000 --> 00:10:46,000
+So how do we solve this?
+
+269
+00:10:46,000 --> 00:10:49,000
+So instead of using React, we have one more choice.
+
+270
+00:10:49,000 --> 00:10:52,000
+What you can do is instead of using the React application,
+
+271
+00:10:52,000 --> 00:10:55,000
+you can use a testing client application like Postman
+
+272
+00:10:55,000 --> 00:10:58,000
+and you can hit the same URL, it'll return data.
+
+273
+00:10:58,000 --> 00:11:02,000
+But how, that we'll see in the next video.
+
diff --git a/15 - REST using Spring Boot/005 Working with Postman_en.srt b/15 - REST using Spring Boot/005 Working with Postman_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..2db2da3fccfe8d8e7c71a147b7dd88696aea9f7c
--- /dev/null
+++ b/15 - REST using Spring Boot/005 Working with Postman_en.srt	
@@ -0,0 +1,292 @@
+1
+00:00:00,000 --> 00:00:03,000
+(light music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: Now, let's see, how do we use Postman.
+
+3
+00:00:05,000 --> 00:00:07,000
+Basically to get the Postman on your machine,
+
+4
+00:00:07,000 --> 00:00:08,000
+you can just go to the browser
+
+5
+00:00:08,000 --> 00:00:10,000
+and search for Postman download.
+
+6
+00:00:10,000 --> 00:00:12,000
+You can see this is the website.
+
+7
+00:00:12,000 --> 00:00:14,000
+You can click on this
+
+8
+00:00:14,000 --> 00:00:17,000
+and based on which version of, which OS you're using,
+
+9
+00:00:17,000 --> 00:00:20,000
+you can download the software here.
+
+10
+00:00:20,000 --> 00:00:21,000
+It'll automatically detect which OS you're using
+
+11
+00:00:21,000 --> 00:00:23,000
+and it will download.
+
+12
+00:00:23,000 --> 00:00:25,000
+So I'm using Mac that do Apple chips.
+
+13
+00:00:25,000 --> 00:00:28,000
+I will click on this and it will download the Postman
+
+14
+00:00:28,000 --> 00:00:31,000
+in my machine and you just have to open it.
+
+15
+00:00:31,000 --> 00:00:33,000
+Okay? So it's not that difficult.
+
+16
+00:00:33,000 --> 00:00:36,000
+Now, once you have installed Postman,
+
+17
+00:00:36,000 --> 00:00:38,000
+I can open Postman on my machine.
+
+18
+00:00:38,000 --> 00:00:41,000
+This is how the postman looks like.
+
+19
+00:00:41,000 --> 00:00:42,000
+Now how do you send a request?
+
+20
+00:00:42,000 --> 00:00:45,000
+Now this is a client, the REST client.
+
+21
+00:00:45,000 --> 00:00:47,000
+And if you want to send a request,
+
+22
+00:00:47,000 --> 00:00:50,000
+basically you can see there's an option of plus here.
+
+23
+00:00:50,000 --> 00:00:51,000
+So click on this.
+
+24
+00:00:51,000 --> 00:00:53,000
+And you can see there are different options here,
+
+25
+00:00:53,000 --> 00:00:54,000
+different SJP methods.
+
+26
+00:00:54,000 --> 00:00:58,000
+We got get, post, put, patch, delete, head, options.
+
+27
+00:00:58,000 --> 00:01:01,000
+We have seen get, post, put, and delete.
+
+28
+00:01:01,000 --> 00:01:03,000
+So I'll be sending a get request now.
+
+29
+00:01:03,000 --> 00:01:05,000
+But what is A URL?
+
+30
+00:01:05,000 --> 00:01:06,000
+Now we have used the URL before, right?
+
+31
+00:01:06,000 --> 00:01:08,000
+So if you see the code,
+
+32
+00:01:08,000 --> 00:01:10,000
+this is the URL, which we're going to use.
+
+33
+00:01:10,000 --> 00:01:11,000
+So I will just copy this
+
+34
+00:01:11,000 --> 00:01:14,000
+and paste it here and click on send.
+
+35
+00:01:14,000 --> 00:01:17,000
+So whatever you can do on React, you can also do it here.
+
+36
+00:01:17,000 --> 00:01:20,000
+But the only thing is in React you can create a UI.
+
+37
+00:01:20,000 --> 00:01:23,000
+Here we are not doing that, we are just getting decent data.
+
+38
+00:01:23,000 --> 00:01:25,000
+Now you will say, what's the use of this?
+
+39
+00:01:25,000 --> 00:01:29,000
+To test if you are actually sending the right data.
+
+40
+00:01:29,000 --> 00:01:30,000
+So maybe you have a server,
+
+41
+00:01:30,000 --> 00:01:32,000
+from the server you're sending Jason data,
+
+42
+00:01:32,000 --> 00:01:34,000
+you can test it on a Postman.
+
+43
+00:01:34,000 --> 00:01:35,000
+But you will say,
+
+44
+00:01:35,000 --> 00:01:38,000
+'Hey, you know I can also do that on my browser'.
+
+45
+00:01:38,000 --> 00:01:40,000
+So I can just go to the browser,
+
+46
+00:01:40,000 --> 00:01:42,000
+paste the same link, enter, you get the data, right?
+
+47
+00:01:42,000 --> 00:01:44,000
+Yes, it works for the GET request.
+
+48
+00:01:44,000 --> 00:01:46,000
+What about post request?
+
+49
+00:01:46,000 --> 00:01:48,000
+How will you send a post request from here?
+
+50
+00:01:48,000 --> 00:01:49,000
+Of course for that you have to get a form
+
+51
+00:01:49,000 --> 00:01:51,000
+and ultimately we have to get into UI.
+
+52
+00:01:51,000 --> 00:01:53,000
+We don't have to do that because we have a Postman
+
+53
+00:01:53,000 --> 00:01:55,000
+where you can send the post request.
+
+54
+00:01:55,000 --> 00:01:57,000
+So you can click on post
+
+55
+00:01:57,000 --> 00:01:59,000
+and you can hit the URL, whatever URL you have.
+
+56
+00:01:59,000 --> 00:02:03,000
+And if you want to send data, there's option of body here.
+
+57
+00:02:03,000 --> 00:02:05,000
+In this body, you have an option of raw.
+
+58
+00:02:05,000 --> 00:02:09,000
+Select that and say I want to send adjacent data
+
+59
+00:02:09,000 --> 00:02:10,000
+and you can put your adjacent data here.
+
+60
+00:02:10,000 --> 00:02:11,000
+When you click on send,
+
+61
+00:02:11,000 --> 00:02:14,000
+you are sending the request to the server,
+
+62
+00:02:14,000 --> 00:02:15,000
+including the data.
+
+63
+00:02:15,000 --> 00:02:17,000
+That's how we are going to use Postman
+
+64
+00:02:17,000 --> 00:02:17,000
+in the upcoming video.
+
+65
+00:02:17,000 --> 00:02:20,000
+So maybe we'll switch between Postman
+
+66
+00:02:20,000 --> 00:02:23,000
+and React to show you what you can do with this project.
+
+67
+00:02:23,000 --> 00:02:26,000
+So yeah, that's it from Postman. It's easy to use.
+
+68
+00:02:26,000 --> 00:02:30,000
+So it's not just the only client available.
+
+69
+00:02:30,000 --> 00:02:33,000
+We can also use Swagger to see the content.
+
+70
+00:02:33,000 --> 00:02:35,000
+Maybe in between, also see how do we use swagger.
+
+71
+00:02:35,000 --> 00:02:38,000
+But yeah, that's the entire idea.
+
+72
+00:02:38,000 --> 00:02:41,000
+But now we have to actually build the backend.
+
+73
+00:02:41,000 --> 00:02:42,000
+Let's do that in the next video.
+
diff --git a/15 - REST using Spring Boot/006 Source-Code.url b/15 - REST using Spring Boot/006 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..6bd0d442afa7ce6bde8adb8cc0bda799c6b74a15
--- /dev/null
+++ b/15 - REST using Spring Boot/006 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/9%20REST%20using%20Spring%20Boot/8.6%20Creating%20a%20Rest%20Controller/spring-boot-rest
\ No newline at end of file
diff --git a/15 - REST using Spring Boot/007 Connecting React and Spring_en.srt b/15 - REST using Spring Boot/007 Connecting React and Spring_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..56379524f8f198b105a8caafd13e906eab245191
--- /dev/null
+++ b/15 - REST using Spring Boot/007 Connecting React and Spring_en.srt	
@@ -0,0 +1,204 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:04,000
+-: So let's try to connect
+
+3
+00:00:04,000 --> 00:00:06,000
+our React application with the backend.
+
+4
+00:00:06,000 --> 00:00:09,000
+Now this particular React application which is running,
+
+5
+00:00:09,000 --> 00:00:13,000
+it is using the data from the mock database, which we had.
+
+6
+00:00:13,000 --> 00:00:14,000
+Right? DB.json?
+
+7
+00:00:14,000 --> 00:00:16,000
+And that's why you got this data here.
+
+8
+00:00:16,000 --> 00:00:17,000
+But this is not what we want.
+
+9
+00:00:17,000 --> 00:00:20,000
+So what we can do is we can go back to our React application
+
+10
+00:00:20,000 --> 00:00:23,000
+and we just have to change this particular URL here.
+
+11
+00:00:23,000 --> 00:00:25,000
+So just paste it.
+
+12
+00:00:25,000 --> 00:00:27,000
+Our job is done, right? It's so simple.
+
+13
+00:00:27,000 --> 00:00:31,000
+Let's see if this works. I will just save this.
+
+14
+00:00:31,000 --> 00:00:34,000
+It has restarted the server. Not sure.
+
+15
+00:00:34,000 --> 00:00:36,000
+Let me send npm start again.
+
+16
+00:00:36,000 --> 00:00:38,000
+So this time it'll not hit the same URL
+
+17
+00:00:38,000 --> 00:00:41,000
+it'll hit different URL, but we got an error.
+
+18
+00:00:41,000 --> 00:00:45,000
+It says network error. This is not working.
+
+19
+00:00:45,000 --> 00:00:47,000
+So why is it is not running?
+
+20
+00:00:47,000 --> 00:00:48,000
+So the problem is with the security, right?
+
+21
+00:00:48,000 --> 00:00:51,000
+So there's a concept of CrossOrigin.
+
+22
+00:00:51,000 --> 00:00:52,000
+So they have different origins.
+
+23
+00:00:52,000 --> 00:00:54,000
+And that's why we have an issue.
+
+24
+00:00:54,000 --> 00:00:56,000
+To solve this problem, and in fact,
+
+25
+00:00:56,000 --> 00:00:59,000
+you can read about this more on the search for CrossOrigin.
+
+26
+00:00:59,000 --> 00:01:00,000
+You'll get the idea.
+
+27
+00:01:00,000 --> 00:01:04,000
+So basically we have to add one more annotation here
+
+28
+00:01:04,000 --> 00:01:06,000
+on our controller to allow it.
+
+29
+00:01:06,000 --> 00:01:09,000
+So you have to say CrossOrigin and in bracket
+
+30
+00:01:09,000 --> 00:01:13,000
+you have to mention origins and mention the front end port
+
+31
+00:01:13,000 --> 00:01:15,000
+with the URL, in fact, the entire URL,
+
+32
+00:01:15,000 --> 00:01:19,000
+which is http://localhost.
+
+33
+00:01:19,000 --> 00:01:20,000
+So basically you're saying,
+
+34
+00:01:20,000 --> 00:01:22,000
+"Please allow request from this particular URL,"
+
+35
+00:01:22,000 --> 00:01:24,000
+and that's what we have done here.
+
+36
+00:01:24,000 --> 00:01:28,000
+Let's refresh or relaunch the application.
+
+37
+00:01:28,000 --> 00:01:32,000
+Let's go back to our front end and say refresh.
+
+38
+00:01:32,000 --> 00:01:33,000
+And you got it.
+
+39
+00:01:33,000 --> 00:01:35,000
+So basically the the React application
+
+40
+00:01:35,000 --> 00:01:37,000
+is able to get the data from the server
+
+41
+00:01:37,000 --> 00:01:39,000
+and this is what we had in the server, right?
+
+42
+00:01:39,000 --> 00:01:40,000
+Five different code.
+
+43
+00:01:40,000 --> 00:01:41,000
+So that's how basically you connect
+
+44
+00:01:41,000 --> 00:01:45,000
+your front end and your backend.
+
+45
+00:01:45,000 --> 00:01:47,000
+So the only thing which was giving us error
+
+46
+00:01:47,000 --> 00:01:51,000
+is the CrossOrigin and we have solved this with this line.
+
+47
+00:01:51,000 --> 00:01:52,000
+Cool, so that's how basically you work
+
+48
+00:01:52,000 --> 00:01:54,000
+with React and backend.
+
+49
+00:01:54,000 --> 00:01:57,000
+Now we are done with the viewing all post.
+
+50
+00:01:57,000 --> 00:02:01,000
+Maybe you want to also add a post or create a new job post.
+
+51
+00:02:01,000 --> 00:02:03,000
+How we do that? Let's see in the next video.
+
diff --git a/15 - REST using Spring Boot/008 PathVariable_en.srt b/15 - REST using Spring Boot/008 PathVariable_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..54b893e318570fd896238b08d51d7d21ae1683e1
--- /dev/null
+++ b/15 - REST using Spring Boot/008 PathVariable_en.srt	
@@ -0,0 +1,672 @@
+1
+00:00:00,000 --> 00:00:03,000
+(upbeat music)
+
+2
+00:00:03,000 --> 00:00:04,000
+-: So we are able to get all the jobs
+
+3
+00:00:04,000 --> 00:00:06,000
+is because of this controller.
+
+4
+00:00:06,000 --> 00:00:10,000
+So when you hit the request for JobsPosts,
+
+5
+00:00:10,000 --> 00:00:13,000
+you are getting basically all the jobs here, right?
+
+6
+00:00:13,000 --> 00:00:15,000
+And the way we are getting that,
+
+7
+00:00:15,000 --> 00:00:18,000
+if you go back to your Postman, let's hit the query
+
+8
+00:00:18,000 --> 00:00:21,000
+for localhost.8080/jobposts.
+
+9
+00:00:21,000 --> 00:00:24,000
+If you click consent in the result, you can see we got,
+
+10
+00:00:24,000 --> 00:00:27,000
+we are getting all the posts here internal, we got five.
+
+11
+00:00:27,000 --> 00:00:31,000
+But then what if I just want one,
+
+12
+00:00:31,000 --> 00:00:33,000
+I don't want all something like, let's say I got,
+
+13
+00:00:33,000 --> 00:00:37,000
+I want this, so I want to search for a regular post
+
+14
+00:00:37,000 --> 00:00:40,000
+by the post ID, which is three in this case.
+
+15
+00:00:40,000 --> 00:00:43,000
+So what I can do is I can come back here on the URL
+
+16
+00:00:43,000 --> 00:00:46,000
+and I'm not going to search for job posts.
+
+17
+00:00:46,000 --> 00:00:48,000
+Now I just want to search for one, right?
+
+18
+00:00:48,000 --> 00:00:51,000
+So it's a job post, that's how you define your URLs.
+
+19
+00:00:51,000 --> 00:00:55,000
+Or in, when you talk about React, we call them as URI
+
+20
+00:00:55,000 --> 00:00:58,000
+because they are the uniform resource identifier
+
+21
+00:00:58,000 --> 00:01:01,000
+because we are identifying a particular resource.
+
+22
+00:01:01,000 --> 00:01:03,000
+So we can say a job post slash
+
+23
+00:01:03,000 --> 00:01:05,000
+and then we can give a number, which is three.
+
+24
+00:01:05,000 --> 00:01:08,000
+So this is how we can basically get this data.
+
+25
+00:01:08,000 --> 00:01:10,000
+But will it work, of course not.
+
+26
+00:01:10,000 --> 00:01:12,000
+Which, if you're on this code, you can say, "Hey, it says
+
+27
+00:01:12,000 --> 00:01:16,000
+this particular request is 404, not found,
+
+28
+00:01:16,000 --> 00:01:18,000
+basically is not able to find the path".
+
+29
+00:01:18,000 --> 00:01:21,000
+You know why, because we don't have a controller for that.
+
+30
+00:01:21,000 --> 00:01:23,000
+So what we have to do is we have to get a controller here.
+
+31
+00:01:23,000 --> 00:01:26,000
+So I would say public, which will return one job
+
+32
+00:01:26,000 --> 00:01:27,000
+post not all.
+
+33
+00:01:27,000 --> 00:01:29,000
+So it'll not be at least it'll be a single one
+
+34
+00:01:29,000 --> 00:01:33,000
+because the post ID is a unique number or unique field.
+
+35
+00:01:33,000 --> 00:01:36,000
+So it of course you will get only one and I will say get job
+
+36
+00:01:36,000 --> 00:01:38,000
+because we just want one.
+
+37
+00:01:38,000 --> 00:01:41,000
+And then here we have to do the mapping as well.
+
+38
+00:01:41,000 --> 00:01:42,000
+So I will say get mapping
+
+39
+00:01:42,000 --> 00:01:47,000
+and this will be for job post, not all jobs, just one.
+
+40
+00:01:47,000 --> 00:01:49,000
+And then we can simply return the value.
+
+41
+00:01:49,000 --> 00:01:52,000
+But then how you going to get the value?
+
+42
+00:01:52,000 --> 00:01:55,000
+See, the thing is we have different job posts, right?
+
+43
+00:01:55,000 --> 00:01:57,000
+I mean we have different jobs and every job has an ID
+
+44
+00:01:57,000 --> 00:02:00,000
+and that ID, we are even passing in the URL.
+
+45
+00:02:00,000 --> 00:02:02,000
+So you can see we are passing three here.
+
+46
+00:02:02,000 --> 00:02:05,000
+How will you accept three here, that's a question, right?
+
+47
+00:02:05,000 --> 00:02:07,000
+At this point what I will do is I will hardcode the value
+
+48
+00:02:07,000 --> 00:02:11,000
+three and then I'm going to send a request to service.
+
+49
+00:02:11,000 --> 00:02:14,000
+I would say service.get.Job.
+
+50
+00:02:14,000 --> 00:02:17,000
+And in bracket you have to pass the ID.
+
+51
+00:02:17,000 --> 00:02:20,000
+Again, I, at this point, I will hardcore the value as three.
+
+52
+00:02:20,000 --> 00:02:22,000
+And then we'll see how do you get the value dynamically.
+
+53
+00:02:22,000 --> 00:02:24,000
+But unfortunately in our service class,
+
+54
+00:02:24,000 --> 00:02:25,000
+we don't have this method.
+
+55
+00:02:25,000 --> 00:02:27,000
+So I can simply click here
+
+56
+00:02:27,000 --> 00:02:30,000
+and say, "Hey, generate a method for me by accepting INT
+
+57
+00:02:30,000 --> 00:02:31,000
+and return the value".
+
+58
+00:02:31,000 --> 00:02:34,000
+But then even service don't have a value, right?
+
+59
+00:02:34,000 --> 00:02:36,000
+So we have to ask it from the repo,
+
+60
+00:02:36,000 --> 00:02:37,000
+so I would say repo.getJob,
+
+61
+00:02:39,000 --> 00:02:42,000
+even repo is not having this method.
+
+62
+00:02:42,000 --> 00:02:46,000
+So let me create one, I would say create a method.
+
+63
+00:02:46,000 --> 00:02:48,000
+But then how will you get the post here?
+
+64
+00:02:48,000 --> 00:02:51,000
+See, the thing is, it is repo's responsibility
+
+65
+00:02:51,000 --> 00:02:52,000
+to return data, right?
+
+66
+00:02:52,000 --> 00:02:53,000
+But then the data is there in the list now.
+
+67
+00:02:53,000 --> 00:02:56,000
+So how will you get this data, which is three?
+
+68
+00:02:56,000 --> 00:02:58,000
+Because that's what I'm asking for, right?
+
+69
+00:02:58,000 --> 00:03:01,000
+The way you can do that is you can, first of all, you have
+
+70
+00:03:01,000 --> 00:03:03,000
+to iterate to the elements.
+
+71
+00:03:03,000 --> 00:03:06,000
+I will say, first of all, I will return null here
+
+72
+00:03:06,000 --> 00:03:08,000
+and then I will say four.
+
+73
+00:03:08,000 --> 00:03:10,000
+Let me iterate between all the post,
+
+74
+00:03:10,000 --> 00:03:12,000
+because we have a list of elements.
+
+75
+00:03:12,000 --> 00:03:16,000
+So I'll say job post, I will say post colon.
+
+76
+00:03:16,000 --> 00:03:20,000
+And I'm going to fetch this from job.
+
+77
+00:03:20,000 --> 00:03:23,000
+The method name is jobs or maybe I will say job,
+
+78
+00:03:23,000 --> 00:03:24,000
+not job post.
+
+79
+00:03:24,000 --> 00:03:26,000
+So job, okay.
+
+80
+00:03:26,000 --> 00:03:29,000
+And then once I iterate, I have to check each post ID.
+
+81
+00:03:29,000 --> 00:03:34,000
+So I will say if the job dot get post ID, if it is matching
+
+82
+00:03:34,000 --> 00:03:37,000
+with whatever data you're sending here.
+
+83
+00:03:37,000 --> 00:03:40,000
+So of course we have to send the value I here
+
+84
+00:03:40,000 --> 00:03:43,000
+and we have to accept the number.
+
+85
+00:03:43,000 --> 00:03:45,000
+So we can say I
+
+86
+00:03:45,000 --> 00:03:47,000
+or any other variable if you want, you know,
+
+87
+00:03:47,000 --> 00:03:49,000
+I should be saying post ID.
+
+88
+00:03:49,000 --> 00:03:52,000
+That makes much more sense instead of I.
+
+89
+00:03:52,000 --> 00:03:55,000
+So I would say post ID, post ID, use proper names.
+
+90
+00:03:55,000 --> 00:03:57,000
+That makes, that makes your life easy.
+
+91
+00:03:57,000 --> 00:04:00,000
+So here, we'll try to match it with the post ID.
+
+92
+00:04:00,000 --> 00:04:05,000
+If it is matching, I will return the job.
+
+93
+00:04:05,000 --> 00:04:07,000
+It's that simple, if it is not matching with any
+
+94
+00:04:07,000 --> 00:04:09,000
+of the post, it'll return null.
+
+95
+00:04:09,000 --> 00:04:13,000
+Okay, so that's what we want to give here, okay.
+
+96
+00:04:13,000 --> 00:04:15,000
+And what do you think, will it work?
+
+97
+00:04:15,000 --> 00:04:17,000
+Let's go back to our controller
+
+98
+00:04:17,000 --> 00:04:19,000
+because it should work in the repo.
+
+99
+00:04:19,000 --> 00:04:21,000
+We have to go back to the controller.
+
+100
+00:04:21,000 --> 00:04:23,000
+And the question is, will it send, let's try it out.
+
+101
+00:04:23,000 --> 00:04:25,000
+So what I'll do is I'll relaunch the application
+
+102
+00:04:25,000 --> 00:04:28,000
+because I have made some changes and go back to Postman.
+
+103
+00:04:28,000 --> 00:04:31,000
+And this time let's hit, and you can see we call the data.
+
+104
+00:04:31,000 --> 00:04:34,000
+So this, yes, we are getting this post three.
+
+105
+00:04:34,000 --> 00:04:35,000
+But then what if you send two
+
+106
+00:04:35,000 --> 00:04:38,000
+and if you click on send, you can say it says not found.
+
+107
+00:04:38,000 --> 00:04:41,000
+You know why, because we are hard coding.
+
+108
+00:04:41,000 --> 00:04:44,000
+The value here, it'll only search for three.
+
+109
+00:04:44,000 --> 00:04:46,000
+I mean the UI should be three.
+
+110
+00:04:46,000 --> 00:04:47,000
+Of course this should be dynamic, right?
+
+111
+00:04:47,000 --> 00:04:51,000
+The way you do that is by putting that in a curly bracket.
+
+112
+00:04:51,000 --> 00:04:52,000
+So you have to use a curly bracket
+
+113
+00:04:52,000 --> 00:04:55,000
+and say post,
+
+114
+00:04:55,000 --> 00:04:57,000
+I mean whatever video variable you want to use here.
+
+115
+00:04:57,000 --> 00:05:01,000
+And then you have to accept that value there.
+
+116
+00:05:01,000 --> 00:05:06,000
+So it's a post ID, and here we'll accept the post ID.
+
+117
+00:05:06,000 --> 00:05:08,000
+And the same ID you are going to send here.
+
+118
+00:05:08,000 --> 00:05:10,000
+So what we are doing is in the URL,
+
+119
+00:05:10,000 --> 00:05:12,000
+whatever value you're sending, we are accepting
+
+120
+00:05:12,000 --> 00:05:15,000
+that in this little variable
+
+121
+00:05:15,000 --> 00:05:17,000
+and then we are sending it further.
+
+122
+00:05:17,000 --> 00:05:18,000
+Now, since we are passing in the URL,
+
+123
+00:05:18,000 --> 00:05:20,000
+we have to use the curly package.
+
+124
+00:05:20,000 --> 00:05:24,000
+It's not like what we have done before in the query string.
+
+125
+00:05:24,000 --> 00:05:26,000
+In the query string, we have used request peram.
+
+126
+00:05:26,000 --> 00:05:28,000
+Here, we have to use this curly brackets.
+
+127
+00:05:28,000 --> 00:05:31,000
+But then will this work, no, you know, we have
+
+128
+00:05:31,000 --> 00:05:34,000
+to use one annotation here called path variable.
+
+129
+00:05:34,000 --> 00:05:37,000
+So when we use path variable here, then it'll check
+
+130
+00:05:37,000 --> 00:05:38,000
+for the path and it'll try
+
+131
+00:05:38,000 --> 00:05:40,000
+to find this particular curly bracket.
+
+132
+00:05:40,000 --> 00:05:43,000
+Okay, and you can also mention the variable name
+
+133
+00:05:43,000 --> 00:05:45,000
+if you want, you can mention which variable
+
+134
+00:05:45,000 --> 00:05:46,000
+you are going to target.
+
+135
+00:05:46,000 --> 00:05:49,000
+So I will say post ID example, let's say if you have more,
+
+136
+00:05:49,000 --> 00:05:51,000
+so you have to post ID slash maybe you want
+
+137
+00:05:51,000 --> 00:05:53,000
+to specify something else.
+
+138
+00:05:53,000 --> 00:05:55,000
+Maybe I'll say something, and if you want
+
+139
+00:05:55,000 --> 00:05:57,000
+to accept this in two different variables, then you have
+
+140
+00:05:57,000 --> 00:05:59,000
+to provide the names, post ID,
+
+141
+00:05:59,000 --> 00:06:01,000
+something, something like that.
+
+142
+00:06:01,000 --> 00:06:04,000
+Oh, that's, anyway,
+
+143
+00:06:04,000 --> 00:06:06,000
+but then if you just have one variable,
+
+144
+00:06:06,000 --> 00:06:09,000
+you can skip this part if you have the same name.
+
+145
+00:06:09,000 --> 00:06:10,000
+But let's see if this works now.
+
+146
+00:06:10,000 --> 00:06:12,000
+So I will just relaunch this.
+
+147
+00:06:12,000 --> 00:06:16,000
+Go back to my Postman and let's hit the third one first.
+
+148
+00:06:16,000 --> 00:06:19,000
+Third post, okay, so I not started yet.
+
+149
+00:06:19,000 --> 00:06:20,000
+So I started, we got three.
+
+150
+00:06:20,000 --> 00:06:25,000
+If I say two and we got two, if I say 10,
+
+151
+00:06:25,000 --> 00:06:28,000
+because that's the last post we have.
+
+152
+00:06:28,000 --> 00:06:32,000
+Do we have 10 now, let me verify repo.
+
+153
+00:06:32,000 --> 00:06:34,000
+Oh, sorry, we only have five, so I will say five.
+
+154
+00:06:34,000 --> 00:06:35,000
+And you can see we got five.
+
+155
+00:06:35,000 --> 00:06:37,000
+But yes, if you don't have a value, then you will get null
+
+156
+00:06:37,000 --> 00:06:39,000
+because you have not got anything.
+
+157
+00:06:39,000 --> 00:06:42,000
+So that's how basically you can request
+
+158
+00:06:42,000 --> 00:06:44,000
+for one particular thing.
+
+159
+00:06:44,000 --> 00:06:46,000
+So important thing is, in this video we have talked
+
+160
+00:06:46,000 --> 00:06:48,000
+about the path variable.
+
+161
+00:06:48,000 --> 00:06:50,000
+So if you want to accept a particular variable
+
+162
+00:06:50,000 --> 00:06:52,000
+or one value, you can use path variable.
+
+163
+00:06:52,000 --> 00:06:54,000
+In the next video, let's try to discuss
+
+164
+00:06:54,000 --> 00:06:56,000
+how do you send a data,
+
+165
+00:06:56,000 --> 00:06:58,000
+because till this point we are just
+
+166
+00:06:58,000 --> 00:06:59,000
+fetching data from the server.
+
+167
+00:06:59,000 --> 00:07:00,000
+How do you send data to the server?
+
+168
+00:07:00,000 --> 00:07:03,000
+Let's talk about that in the next video.
+
diff --git a/15 - REST using Spring Boot/008 Source-Code.url b/15 - REST using Spring Boot/008 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..a161099b2d867a9ed36899d6195f6998f2f70355
--- /dev/null
+++ b/15 - REST using Spring Boot/008 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/9%20REST%20using%20Spring%20Boot/8.8%20PathVariable/spring-boot-rest
\ No newline at end of file
diff --git a/15 - REST using Spring Boot/009 Sending Data and RequestBody_en.srt b/15 - REST using Spring Boot/009 Sending Data and RequestBody_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..63e7b27ee3b33c9e20cceb7bec1dc57fc96a422c
--- /dev/null
+++ b/15 - REST using Spring Boot/009 Sending Data and RequestBody_en.srt	
@@ -0,0 +1,572 @@
+1
+00:00:00,000 --> 00:00:03,000
+(upbeat music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: So basically, we have created one more controller here
+
+3
+00:00:06,000 --> 00:00:08,000
+and then we were testing it with Postman, right?
+
+4
+00:00:08,000 --> 00:00:10,000
+So basically we got a Postman here
+
+5
+00:00:10,000 --> 00:00:11,000
+and things are working out,
+
+6
+00:00:11,000 --> 00:00:14,000
+but we can also create a React app for this, right?
+
+7
+00:00:14,000 --> 00:00:15,000
+So we'll discuss that.
+
+8
+00:00:15,000 --> 00:00:20,000
+How do you use all this URL in the React application later,
+
+9
+00:00:20,000 --> 00:00:24,000
+but while learning all these things, let's use Postman
+
+10
+00:00:24,000 --> 00:00:25,000
+to send the request to the server
+
+11
+00:00:25,000 --> 00:00:28,000
+and later on we'll see how do you use React there.
+
+12
+00:00:28,000 --> 00:00:30,000
+Okay, so what we're gonna discuss now is
+
+13
+00:00:30,000 --> 00:00:32,000
+how do you send data?
+
+14
+00:00:32,000 --> 00:00:32,000
+Okay?
+
+15
+00:00:32,000 --> 00:00:35,000
+First of all, what I will do is I will just send a request
+
+16
+00:00:35,000 --> 00:00:36,000
+for five and let me copy this
+
+17
+00:00:36,000 --> 00:00:41,000
+because I'm going to reuse this so it's a copy, okay?
+
+18
+00:00:41,000 --> 00:00:42,000
+Just for my reference.
+
+19
+00:00:42,000 --> 00:00:46,000
+Now, let's say how do you send data to the server?
+
+20
+00:00:46,000 --> 00:00:48,000
+Because if you see on the server side, if you go back
+
+21
+00:00:48,000 --> 00:00:52,000
+to your code in the repo, we do have a method.
+
+22
+00:00:52,000 --> 00:00:53,000
+Where's the method?
+
+23
+00:00:53,000 --> 00:00:55,000
+Okay, so we do have a method called add job.
+
+24
+00:00:55,000 --> 00:00:56,000
+Can you see that?
+
+25
+00:00:56,000 --> 00:01:00,000
+Which adds the job in the list.
+
+26
+00:01:00,000 --> 00:01:04,000
+In the service also, we have add job, if you see here,
+
+27
+00:01:04,000 --> 00:01:05,000
+but in the controller we don't have add job.
+
+28
+00:01:05,000 --> 00:01:08,000
+So let's create one so that we can send data.
+
+29
+00:01:08,000 --> 00:01:10,000
+So I'll say public, I don't want to return anything
+
+30
+00:01:10,000 --> 00:01:12,000
+and I will say add job.
+
+31
+00:01:12,000 --> 00:01:14,000
+And then we have to do the mapping.
+
+32
+00:01:14,000 --> 00:01:17,000
+But this time, instead of using get mapping,
+
+33
+00:01:17,000 --> 00:01:18,000
+we are going to use post mapping
+
+34
+00:01:18,000 --> 00:01:21,000
+because we are basically submitting some data to the server.
+
+35
+00:01:21,000 --> 00:01:24,000
+So we'll say post and what will be the URL?
+
+36
+00:01:24,000 --> 00:01:27,000
+So the URL will be job post but you will say,
+
+37
+00:01:27,000 --> 00:01:30,000
+"hey, we already have a job post here, right"?
+
+38
+00:01:30,000 --> 00:01:32,000
+Will it be confused?
+
+39
+00:01:32,000 --> 00:01:34,000
+See, we do have a same URL,
+
+40
+00:01:34,000 --> 00:01:35,000
+but then we have a different methods.
+
+41
+00:01:35,000 --> 00:01:37,000
+We have get mapping and post mapping.
+
+42
+00:01:37,000 --> 00:01:38,000
+So they are different.
+
+43
+00:01:38,000 --> 00:01:41,000
+Okay, and then whatever data you will receive,
+
+44
+00:01:41,000 --> 00:01:43,000
+you will basically say return or not return.
+
+45
+00:01:43,000 --> 00:01:47,000
+You will basically say service.add job.
+
+46
+00:01:47,000 --> 00:01:49,000
+Oh, but then when you say add job,
+
+47
+00:01:49,000 --> 00:01:51,000
+you need that object of job post.
+
+48
+00:01:51,000 --> 00:01:53,000
+How will you get that object?
+
+49
+00:01:53,000 --> 00:01:57,000
+So in this bracket I can create the object of job post
+
+50
+00:01:57,000 --> 00:02:00,000
+and we'll say job post.
+
+51
+00:02:00,000 --> 00:02:02,000
+And if you remember, we have done something similar
+
+52
+00:02:02,000 --> 00:02:05,000
+when we talked about Spring MVC, right?
+
+53
+00:02:05,000 --> 00:02:06,000
+Or Spring Web MVC.
+
+54
+00:02:06,000 --> 00:02:09,000
+Okay, and then we can pass the job post.
+
+55
+00:02:09,000 --> 00:02:11,000
+Now question guys, when you send the data,
+
+56
+00:02:11,000 --> 00:02:15,000
+how exactly this data will be supplied here in this object
+
+57
+00:02:15,000 --> 00:02:17,000
+because what we are going to send from the client
+
+58
+00:02:17,000 --> 00:02:21,000
+is the JSON format and that JSON data needs
+
+59
+00:02:21,000 --> 00:02:23,000
+to get stored in this object.
+
+60
+00:02:23,000 --> 00:02:28,000
+For this we have to use an annotation called request body.
+
+61
+00:02:28,000 --> 00:02:30,000
+Now this sounds similar, right?
+
+62
+00:02:30,000 --> 00:02:32,000
+We have talked about response body before.
+
+63
+00:02:32,000 --> 00:02:34,000
+When you want to return data, we use response body.
+
+64
+00:02:34,000 --> 00:02:37,000
+When you want to send data to the server
+
+65
+00:02:37,000 --> 00:02:39,000
+or as a server, if you want to accept data,
+
+66
+00:02:39,000 --> 00:02:41,000
+you have to use request body.
+
+67
+00:02:41,000 --> 00:02:45,000
+So whatever data you are sending in the job post request,
+
+68
+00:02:45,000 --> 00:02:47,000
+which is post mapping or post request,
+
+69
+00:02:47,000 --> 00:02:50,000
+that will be stored inside this job post.
+
+70
+00:02:50,000 --> 00:02:52,000
+But will it work, let's try.
+
+71
+00:02:52,000 --> 00:02:55,000
+I will relaunch the application and go back to Postman.
+
+72
+00:02:55,000 --> 00:02:56,000
+First, let's fetch all the records.
+
+73
+00:02:56,000 --> 00:02:59,000
+I will click on send and you can see it is sending
+
+74
+00:02:59,000 --> 00:03:01,000
+all the records and last value is five.
+
+75
+00:03:01,000 --> 00:03:02,000
+I mean the post is five.
+
+76
+00:03:02,000 --> 00:03:05,000
+What I will do is I will send the request now.
+
+77
+00:03:05,000 --> 00:03:07,000
+Now what is a UL for?
+
+78
+00:03:07,000 --> 00:03:09,000
+Send request is your website name,
+
+79
+00:03:09,000 --> 00:03:13,000
+which is localhost:8080/jobpost.
+
+80
+00:03:13,000 --> 00:03:16,000
+And then we have to make sure that you send a post request
+
+81
+00:03:16,000 --> 00:03:17,000
+because we are sending data now,
+
+82
+00:03:17,000 --> 00:03:20,000
+but also we have to send data.
+
+83
+00:03:20,000 --> 00:03:22,000
+We are not sending data, how do you send data here?
+
+84
+00:03:22,000 --> 00:03:25,000
+In that case, you can use a body here.
+
+85
+00:03:25,000 --> 00:03:27,000
+If you can see we have a body here, select raw
+
+86
+00:03:27,000 --> 00:03:30,000
+and make sure that you have JSON here
+
+87
+00:03:30,000 --> 00:03:31,000
+because we're sending JSON data
+
+88
+00:03:31,000 --> 00:03:33,000
+and then paste your data, whatever you want to send.
+
+89
+00:03:33,000 --> 00:03:35,000
+And that's why I copy it, why to type all this thing.
+
+90
+00:03:35,000 --> 00:03:37,000
+But I will change the post study to six.
+
+91
+00:03:37,000 --> 00:03:41,000
+I'm looking for a iOS developer experience in mobile
+
+92
+00:03:41,000 --> 00:03:43,000
+development for iOS, not Android.
+
+93
+00:03:43,000 --> 00:03:48,000
+So I'll delete that and you don't need to know development.
+
+94
+00:03:48,000 --> 00:03:51,000
+Experience I want is two years and this is my new post.
+
+95
+00:03:51,000 --> 00:03:54,000
+And the moment I click on send, okay, something happened.
+
+96
+00:03:54,000 --> 00:03:56,000
+You can see we got 200, okay?
+
+97
+00:03:56,000 --> 00:04:00,000
+That means we don't have any error, how do you verify this?
+
+98
+00:04:00,000 --> 00:04:02,000
+It's very simple, just go back
+
+99
+00:04:02,000 --> 00:04:05,000
+to your job post and say send.
+
+100
+00:04:05,000 --> 00:04:09,000
+If you can see at the end, if you can see six, it's working.
+
+101
+00:04:09,000 --> 00:04:12,000
+So basically now we are able to send data to the server.
+
+102
+00:04:12,000 --> 00:04:14,000
+We are able to get the data from the server.
+
+103
+00:04:14,000 --> 00:04:17,000
+I know you are waiting for a time where we can connect
+
+104
+00:04:17,000 --> 00:04:18,000
+with database, but we'll do that later.
+
+105
+00:04:18,000 --> 00:04:21,000
+But at this point we are able to create a new job
+
+106
+00:04:21,000 --> 00:04:24,000
+and then this happening because of this annotation called
+
+107
+00:04:24,000 --> 00:04:27,000
+request body, which is very important.
+
+108
+00:04:27,000 --> 00:04:28,000
+So yeah, that's it, we now we know
+
+109
+00:04:28,000 --> 00:04:32,000
+how do you send data from client to server?
+
+110
+00:04:32,000 --> 00:04:34,000
+One more thing, it's not just you have to,
+
+111
+00:04:34,000 --> 00:04:38,000
+you can only send, you know the JSON format.
+
+112
+00:04:38,000 --> 00:04:40,000
+You can also send XML format if you want.
+
+113
+00:04:40,000 --> 00:04:43,000
+But then for that we have to do some extra stuff.
+
+114
+00:04:43,000 --> 00:04:45,000
+But at this point we are working with XML.
+
+115
+00:04:46,000 --> 00:04:49,000
+Also, you can return the object created here if you want.
+
+116
+00:04:49,000 --> 00:04:52,000
+So because in our code we are saying void,
+
+117
+00:04:52,000 --> 00:04:56,000
+but it also makes sense to return the job post whatever job
+
+118
+00:04:56,000 --> 00:04:58,000
+post you have entered there, return the same object,
+
+119
+00:04:58,000 --> 00:05:00,000
+which will also tell you that yeah,
+
+120
+00:05:00,000 --> 00:05:02,000
+you have added some new data.
+
+121
+00:05:02,000 --> 00:05:06,000
+So you can just relaunch it, go back to your Postman,
+
+122
+00:05:06,000 --> 00:05:09,000
+click on, okay, I wish the server right.
+
+123
+00:05:09,000 --> 00:05:10,000
+So I have to say send.
+
+124
+00:05:10,000 --> 00:05:12,000
+And you can see it is coming back again.
+
+125
+00:05:12,000 --> 00:05:16,000
+Even if you say post request, additionally,
+
+126
+00:05:16,000 --> 00:05:18,000
+this is not a good way of returning data
+
+127
+00:05:18,000 --> 00:05:19,000
+because whatever you're accepting, you're returning
+
+128
+00:05:19,000 --> 00:05:22,000
+that maybe if you can also do,
+
+129
+00:05:22,000 --> 00:05:24,000
+what you can do is you can send a request,
+
+130
+00:05:24,000 --> 00:05:29,000
+you can service dot get job and mention the post Id,
+
+131
+00:05:29,000 --> 00:05:30,000
+which you have entered.
+
+132
+00:05:30,000 --> 00:05:31,000
+You know, this will make sure that
+
+133
+00:05:31,000 --> 00:05:34,000
+you have actually stored the data somewhere.
+
+134
+00:05:34,000 --> 00:05:37,000
+Okay, so because now you are basically adding the object
+
+135
+00:05:37,000 --> 00:05:39,000
+and then you're fetching the object from the source
+
+136
+00:05:39,000 --> 00:05:40,000
+where you have saved it.
+
+137
+00:05:40,000 --> 00:05:44,000
+So now if you relaunch this just for the confirmation,
+
+138
+00:05:44,000 --> 00:05:47,000
+go back to your postman, hit the send again
+
+139
+00:05:47,000 --> 00:05:49,000
+and you can see it's coming back.
+
+140
+00:05:49,000 --> 00:05:51,000
+But this time it's coming from the collection, okay?
+
+141
+00:05:51,000 --> 00:05:52,000
+Not just whatever you're sending.
+
+142
+00:05:52,000 --> 00:05:55,000
+So yeah, that's it from this video where we talked about
+
+143
+00:05:55,000 --> 00:05:57,000
+how do you send it to server.
+
diff --git a/15 - REST using Spring Boot/009 Source-Code.url b/15 - REST using Spring Boot/009 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..4f15fb7896a8396976b32cc6703829ce9aaf9eec
--- /dev/null
+++ b/15 - REST using Spring Boot/009 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/9%20REST%20using%20Spring%20Boot/8.9%20Sending%20Data%20and%20RequestBody/spring-boot-rest
\ No newline at end of file
diff --git a/15 - REST using Spring Boot/010 Put and Delete Mapping_en.srt b/15 - REST using Spring Boot/010 Put and Delete Mapping_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..79382834fb430787061881a08accab973cd880ca
--- /dev/null
+++ b/15 - REST using Spring Boot/010 Put and Delete Mapping_en.srt	
@@ -0,0 +1,1248 @@
+1
+00:00:00,000 --> 00:00:03,000
+(bright music)
+
+2
+00:00:03,000 --> 00:00:04,000
+Instructor: So till this point,
+
+3
+00:00:04,000 --> 00:00:05,000
+we have talked about the get request
+
+4
+00:00:05,000 --> 00:00:07,000
+and the post request, right?
+
+5
+00:00:07,000 --> 00:00:10,000
+So in the Postman, if you see we have done
+
+6
+00:00:10,000 --> 00:00:12,000
+with the get post, but what about put and delete?
+
+7
+00:00:12,000 --> 00:00:16,000
+So let's focus on this two in this video.
+
+8
+00:00:16,000 --> 00:00:17,000
+What I wanna do now is let's say
+
+9
+00:00:17,000 --> 00:00:20,000
+I want to change a particular object.
+
+10
+00:00:20,000 --> 00:00:21,000
+Okay?
+
+11
+00:00:21,000 --> 00:00:22,000
+Now when I say particular object, first of all,
+
+12
+00:00:22,000 --> 00:00:24,000
+let's do a get request.
+
+13
+00:00:24,000 --> 00:00:25,000
+Okay?
+
+14
+00:00:25,000 --> 00:00:27,000
+The server is not running, let's run the server.
+
+15
+00:00:27,000 --> 00:00:29,000
+So let's restart.
+
+16
+00:00:29,000 --> 00:00:31,000
+And now let's click on send.
+
+17
+00:00:31,000 --> 00:00:33,000
+And you can see we got the list of objects here
+
+18
+00:00:33,000 --> 00:00:35,000
+and what are the ideas we have?
+
+19
+00:00:35,000 --> 00:00:39,000
+So we got postId one, two, three, four, five.
+
+20
+00:00:39,000 --> 00:00:41,000
+And now let's say I want to make a change
+
+21
+00:00:41,000 --> 00:00:43,000
+for the frontend developer.
+
+22
+00:00:43,000 --> 00:00:44,000
+Now instead of saying frontend developer, let's say,
+
+23
+00:00:44,000 --> 00:00:48,000
+I want to specifically hire a React developer.
+
+24
+00:00:48,000 --> 00:00:49,000
+So I want to update this.
+
+25
+00:00:49,000 --> 00:00:51,000
+So I want to change the profile
+
+26
+00:00:51,000 --> 00:00:54,000
+from frontend developer to react developer.
+
+27
+00:00:54,000 --> 00:00:56,000
+Next I want to change the number of experience
+
+28
+00:00:56,000 --> 00:00:58,000
+to two instead of three.
+
+29
+00:00:58,000 --> 00:01:01,000
+And I also want to add maybe some other library
+
+30
+00:01:01,000 --> 00:01:04,000
+or let's not work with the tech stack.
+
+31
+00:01:04,000 --> 00:01:07,000
+Let's only change this two front developer.
+
+32
+00:01:07,000 --> 00:01:08,000
+We want to make it React.
+
+33
+00:01:08,000 --> 00:01:11,000
+And this two, which I mean the React,
+
+34
+00:01:11,000 --> 00:01:12,000
+require experience from 232.
+
+35
+00:01:12,000 --> 00:01:13,000
+Okay, how do I do that?
+
+36
+00:01:13,000 --> 00:01:15,000
+Now first of all, let me copy this data.
+
+37
+00:01:15,000 --> 00:01:17,000
+So copy done.
+
+38
+00:01:17,000 --> 00:01:18,000
+Okay, now how do you update?
+
+39
+00:01:18,000 --> 00:01:19,000
+It's very simple.
+
+40
+00:01:19,000 --> 00:01:23,000
+You go to the method and change it to put.
+
+41
+00:01:23,000 --> 00:01:25,000
+Next, we'll change the URL,
+
+42
+00:01:25,000 --> 00:01:27,000
+we'll keep it to job post only.
+
+43
+00:01:27,000 --> 00:01:30,000
+And you are thinking, okay, we did job post
+
+44
+00:01:30,000 --> 00:01:31,000
+for adding the job post
+
+45
+00:01:31,000 --> 00:01:34,000
+and also we have used job post for the searching
+
+46
+00:01:34,000 --> 00:01:36,000
+for a particular job, right?
+
+47
+00:01:36,000 --> 00:01:39,000
+But we can also use job post the same URL for put as well.
+
+48
+00:01:39,000 --> 00:01:42,000
+What is different is the method.
+
+49
+00:01:42,000 --> 00:01:43,000
+The method now is put.
+
+50
+00:01:43,000 --> 00:01:46,000
+Okay, now we are sending a put request.
+
+51
+00:01:46,000 --> 00:01:48,000
+We are specifying the URL.
+
+52
+00:01:48,000 --> 00:01:48,000
+What next?
+
+53
+00:01:48,000 --> 00:01:51,000
+We have to also send the new data, right?
+
+54
+00:01:51,000 --> 00:01:53,000
+You want to update but with what?
+
+55
+00:01:53,000 --> 00:01:55,000
+So what I will do is I will go to body
+
+56
+00:01:55,000 --> 00:01:57,000
+and I would say, okay, let me just take this down.
+
+57
+00:01:57,000 --> 00:02:00,000
+In this body here, I want to paste this
+
+58
+00:02:00,000 --> 00:02:01,000
+because that's the data I want to change.
+
+59
+00:02:01,000 --> 00:02:03,000
+Okay? Not this one, I copied the wrong one.
+
+60
+00:02:03,000 --> 00:02:05,000
+So basically I want to change this Frontend Developer
+
+61
+00:02:05,000 --> 00:02:09,000
+and then instead of Frontend, I want to say React.
+
+62
+00:02:09,000 --> 00:02:10,000
+And then I want to change this as well,
+
+63
+00:02:10,000 --> 00:02:12,000
+which is required experience to two.
+
+64
+00:02:12,000 --> 00:02:13,000
+Okay?
+
+65
+00:02:13,000 --> 00:02:14,000
+If you want, you can change the text stack as well,
+
+66
+00:02:14,000 --> 00:02:16,000
+but at this point, I'm not able to recall
+
+67
+00:02:16,000 --> 00:02:18,000
+what extra thing you need for the developer.
+
+68
+00:02:18,000 --> 00:02:19,000
+So let's keep it there.
+
+69
+00:02:19,000 --> 00:02:21,000
+Or if you want to change, you can do that.
+
+70
+00:02:21,000 --> 00:02:22,000
+So I want this.
+
+71
+00:02:22,000 --> 00:02:24,000
+So what I'll do is I will click on send
+
+72
+00:02:24,000 --> 00:02:25,000
+and it should update it.
+
+73
+00:02:26,000 --> 00:02:27,000
+Will it work?
+
+74
+00:02:27,000 --> 00:02:28,000
+Let's try.
+
+75
+00:02:28,000 --> 00:02:31,000
+So I will click on send and you can see it's not working.
+
+76
+00:02:31,000 --> 00:02:31,000
+You know why?
+
+77
+00:02:31,000 --> 00:02:35,000
+Because we don't have job post with the method put.
+
+78
+00:02:35,000 --> 00:02:37,000
+So that's why it's not saying 404.
+
+79
+00:02:37,000 --> 00:02:41,000
+404 means we don't have any working with job post.
+
+80
+00:02:41,000 --> 00:02:45,000
+We do have it, but we don't have a method which is put,.
+
+81
+00:02:45,000 --> 00:02:46,000
+Okay?
+
+82
+00:02:46,000 --> 00:02:46,000
+How do we change that?
+
+83
+00:02:46,000 --> 00:02:47,000
+It's very simple.
+
+84
+00:02:47,000 --> 00:02:50,000
+Go to your code and in the controller,
+
+85
+00:02:50,000 --> 00:02:53,000
+we have to create one more now for the job post.
+
+86
+00:02:53,000 --> 00:02:55,000
+So I can say public
+
+87
+00:02:55,000 --> 00:02:56,000
+and I want to return the job post as well.
+
+88
+00:02:56,000 --> 00:02:59,000
+S I will say job post.
+
+89
+00:02:59,000 --> 00:03:02,000
+Then instead of saying addJob, we have to say updateJob.
+
+90
+00:03:02,000 --> 00:03:05,000
+And since we are accepting the object,
+
+91
+00:03:05,000 --> 00:03:07,000
+so we have to say RequestBody_JobPost.
+
+92
+00:03:09,000 --> 00:03:11,000
+Let's say I will go for JobPost.
+
+93
+00:03:11,000 --> 00:03:13,000
+And now how do you update it.
+
+94
+00:03:13,000 --> 00:03:15,000
+Again, we will controller will not do that.
+
+95
+00:03:15,000 --> 00:03:17,000
+It's a job of service method.
+
+96
+00:03:17,000 --> 00:03:19,000
+So it's a service.updateJob.
+
+97
+00:03:20,000 --> 00:03:22,000
+And of course, we don't have this object yet.
+
+98
+00:03:22,000 --> 00:03:24,000
+We don't have this method yet, we'll create one.
+
+99
+00:03:24,000 --> 00:03:26,000
+But before that, we have to also do the mapping.
+
+100
+00:03:26,000 --> 00:03:27,000
+Now what do you think?
+
+101
+00:03:27,000 --> 00:03:29,000
+What will the mapping?
+
+102
+00:03:29,000 --> 00:03:30,000
+You get it right.
+
+103
+00:03:30,000 --> 00:03:31,000
+It is put mapping.
+
+104
+00:03:31,000 --> 00:03:35,000
+So for changing, for update, we have to use put mapping.
+
+105
+00:03:35,000 --> 00:03:38,000
+And in the bracket, we have to specify the URL
+
+106
+00:03:38,000 --> 00:03:40,000
+or the path, which is the JobPost.
+
+107
+00:03:40,000 --> 00:03:43,000
+So again, if you observe, post mapping
+
+108
+00:03:43,000 --> 00:03:44,000
+is also using JobPost,
+
+109
+00:03:44,000 --> 00:03:46,000
+put mapping was also using JobPost.
+
+110
+00:03:46,000 --> 00:03:49,000
+The difference is the method, okay?
+
+111
+00:03:49,000 --> 00:03:52,000
+And that's how basically the REST API works, okay?
+
+112
+00:03:52,000 --> 00:03:53,000
+But this will not work
+
+113
+00:03:53,000 --> 00:03:55,000
+is because we don't have the update job
+
+114
+00:03:55,000 --> 00:03:57,000
+and also we need to return, right?
+
+115
+00:03:57,000 --> 00:04:01,000
+So a return service.getJob.
+
+116
+00:04:01,000 --> 00:04:03,000
+Because I want to make sure that whatever we are updating,
+
+117
+00:04:03,000 --> 00:04:04,000
+we are getting actually getting reflected
+
+118
+00:04:04,000 --> 00:04:07,000
+in the repository layer.
+
+119
+00:04:07,000 --> 00:04:10,000
+So it's a jobPost.get postid.
+
+120
+00:04:10,000 --> 00:04:11,000
+So whatever we are updating,
+
+121
+00:04:11,000 --> 00:04:13,000
+I just wanna fetch that particular part.
+
+122
+00:04:13,000 --> 00:04:15,000
+And this is the same line which we have done
+
+123
+00:04:15,000 --> 00:04:17,000
+in the add, okay?
+
+124
+00:04:17,000 --> 00:04:19,000
+But now, this update is something I want to create.
+
+125
+00:04:19,000 --> 00:04:21,000
+So I will say click here.
+
+126
+00:04:21,000 --> 00:04:22,000
+Create a method update job.
+
+127
+00:04:22,000 --> 00:04:23,000
+We have done that.
+
+128
+00:04:23,000 --> 00:04:25,000
+And again, the service is not going
+
+129
+00:04:25,000 --> 00:04:26,000
+to change anything, right?
+
+130
+00:04:26,000 --> 00:04:31,000
+It will simply ask the repository to update the job
+
+131
+00:04:31,000 --> 00:04:35,000
+and we have to send the JobPost, okay?
+
+132
+00:04:35,000 --> 00:04:37,000
+But again, in the repository, we don't have this.
+
+133
+00:04:37,000 --> 00:04:40,000
+So till this point, things are a bit simple.
+
+134
+00:04:40,000 --> 00:04:43,000
+But the moment you create this method in the repo,
+
+135
+00:04:43,000 --> 00:04:45,000
+this is where you have tried the actual logic.
+
+136
+00:04:45,000 --> 00:04:47,000
+Now we have to change something.
+
+137
+00:04:47,000 --> 00:04:49,000
+Even we have done that for the add, right?
+
+138
+00:04:49,000 --> 00:04:52,000
+We are saying jobs.add,
+
+139
+00:04:52,000 --> 00:04:53,000
+but then this is not simply adding,
+
+140
+00:04:53,000 --> 00:04:55,000
+this is basically updating.
+
+141
+00:04:55,000 --> 00:04:58,000
+So you have a choice, you can basically delete
+
+142
+00:04:58,000 --> 00:05:00,000
+the earlier entry and that will be very simple, right?
+
+143
+00:05:00,000 --> 00:05:03,000
+You can simply say job.remove
+
+144
+00:05:03,000 --> 00:05:06,000
+and you can pass the object, which which you want to remove.
+
+145
+00:05:06,000 --> 00:05:09,000
+And then, okay, not this one.
+
+146
+00:05:09,000 --> 00:05:10,000
+No, that's that.
+
+147
+00:05:10,000 --> 00:05:11,000
+Actually this is tricky.
+
+148
+00:05:11,000 --> 00:05:14,000
+Because we want to remove based on the ID, right?
+
+149
+00:05:14,000 --> 00:05:15,000
+So this will not surely work
+
+150
+00:05:15,000 --> 00:05:17,000
+because of course you can make it work.
+
+151
+00:05:17,000 --> 00:05:20,000
+We can get the object and remove and add,
+
+152
+00:05:20,000 --> 00:05:22,000
+but we can also update this by writing some logic.
+
+153
+00:05:22,000 --> 00:05:24,000
+So first of all, we have to find
+
+154
+00:05:24,000 --> 00:05:26,000
+the object which we want to update.
+
+155
+00:05:26,000 --> 00:05:27,000
+So we'll run a loop here.
+
+156
+00:05:27,000 --> 00:05:29,000
+I will say JobPost JobPost1 :
+
+157
+00:05:31,000 --> 00:05:35,000
+and I want it to get from jobs
+
+158
+00:05:35,000 --> 00:05:37,000
+and we'll manually search now each job.
+
+159
+00:05:37,000 --> 00:05:42,000
+So we'll check if the JobPost1 getPostId
+
+160
+00:05:44,000 --> 00:05:48,000
+is similar to JobPost.JobPostId.
+
+161
+00:05:49,000 --> 00:05:50,000
+If this is matching,
+
+162
+00:05:50,000 --> 00:05:52,000
+then we'll write a code, then we'll update.
+
+163
+00:05:52,000 --> 00:05:54,000
+Otherwise, we'll not update of course, right?
+
+164
+00:05:54,000 --> 00:05:55,000
+The job should be there to update.
+
+165
+00:05:55,000 --> 00:05:56,000
+So what I think you're going to update.
+
+166
+00:05:56,000 --> 00:06:00,000
+Now, of course, you don't want to check anything
+
+167
+00:06:00,000 --> 00:06:04,000
+because what if there's no change in the particular field?
+
+168
+00:06:04,000 --> 00:06:05,000
+Example, we have not changed the description,
+
+169
+00:06:05,000 --> 00:06:07,000
+we have not changed tech stack.
+
+170
+00:06:07,000 --> 00:06:09,000
+So we can check, is it different than you change?
+
+171
+00:06:09,000 --> 00:06:10,000
+Why do you even check?
+
+172
+00:06:10,000 --> 00:06:13,000
+We can simply say JobPost1.setPostProfile
+
+173
+00:06:16,000 --> 00:06:19,000
+and we'll get it from the JobPost get profile,
+
+174
+00:06:19,000 --> 00:06:20,000
+this is the one update.
+
+175
+00:06:20,000 --> 00:06:22,000
+Then JobPost.setPostDescription,
+
+176
+00:06:23,000 --> 00:06:24,000
+JobPost.getDescriptio.
+
+177
+00:06:26,000 --> 00:06:31,000
+Then JobPost set to set experience.
+
+178
+00:06:31,000 --> 00:06:36,000
+We'll say JobPost.getExperience, tech stack,
+
+179
+00:06:36,000 --> 00:06:38,000
+JobPost getTechStack.
+
+180
+00:06:38,000 --> 00:06:41,000
+Now basically, we have changed all the fields.
+
+181
+00:06:41,000 --> 00:06:43,000
+You don't even have to check each element there,
+
+182
+00:06:43,000 --> 00:06:46,000
+which will take more time than setting the values, right?
+
+183
+00:06:46,000 --> 00:06:49,000
+But yes, if you think this is a database operation
+
+184
+00:06:49,000 --> 00:06:51,000
+and it will hit multiple, you wattle,
+
+185
+00:06:51,000 --> 00:06:53,000
+you might think about checking the data
+
+186
+00:06:53,000 --> 00:06:54,000
+before hitting it.
+
+187
+00:06:54,000 --> 00:06:55,000
+Okay, so this is the change.
+
+188
+00:06:55,000 --> 00:06:56,000
+These are the changes we have made.
+
+189
+00:06:56,000 --> 00:06:57,000
+Now what do you think?
+
+190
+00:06:57,000 --> 00:06:58,000
+Will it work?
+
+191
+00:06:58,000 --> 00:07:00,000
+It's worth trying,
+
+192
+00:07:00,000 --> 00:07:03,000
+but you know, let's test, delete, and update together.
+
+193
+00:07:03,000 --> 00:07:05,000
+So let's also add the code for delete
+
+194
+00:07:05,000 --> 00:07:07,000
+because maybe I want to write delete as well.
+
+195
+00:07:07,000 --> 00:07:09,000
+So I will also return this JobPost.
+
+196
+00:07:11,000 --> 00:07:11,000
+Maybe while deleting,
+
+197
+00:07:11,000 --> 00:07:16,000
+we can simply return a string if you want.
+
+198
+00:07:16,000 --> 00:07:18,000
+And I will say delete job.
+
+199
+00:07:18,000 --> 00:07:20,000
+And of course, when you say delete, now how do we delete it?
+
+200
+00:07:20,000 --> 00:07:23,000
+So if you go back here to the URL,
+
+201
+00:07:23,000 --> 00:07:24,000
+if you want to say delete.
+
+202
+00:07:24,000 --> 00:07:25,000
+So how do we delete? Delete
+
+203
+00:07:25,000 --> 00:07:28,000
+So in that case, you can simply pass the ID.
+
+204
+00:07:28,000 --> 00:07:29,000
+So whatever ID you want to delete,
+
+205
+00:07:29,000 --> 00:07:31,000
+let's attempt, I'm gonna delete the third job
+
+206
+00:07:31,000 --> 00:07:32,000
+or the ID three.
+
+207
+00:07:32,000 --> 00:07:35,000
+So you can simply say JobPost/3,
+
+208
+00:07:35,000 --> 00:07:38,000
+it will delete the third post or third ID
+
+209
+00:07:38,000 --> 00:07:40,000
+or the object with ID three.
+
+210
+00:07:40,000 --> 00:07:41,000
+Okay.
+
+211
+00:07:41,000 --> 00:07:42,000
+So for this we have to make sure
+
+212
+00:07:42,000 --> 00:07:45,000
+that you are accepting a value
+
+213
+00:07:45,000 --> 00:07:49,000
+because the URL will be delete mapping
+
+214
+00:07:49,000 --> 00:07:53,000
+and then we can say JobPost/ we'll accept the id.
+
+215
+00:07:53,000 --> 00:07:57,000
+So we'll say postId and then we'll accept that here.
+
+216
+00:07:57,000 --> 00:08:01,000
+And to accept the value from here,
+
+217
+00:08:01,000 --> 00:08:02,000
+instead of using request body,
+
+218
+00:08:02,000 --> 00:08:05,000
+we have to use the path variable.
+
+219
+00:08:05,000 --> 00:08:08,000
+And we'll store that in a variable called post ID.
+
+220
+00:08:08,000 --> 00:08:09,000
+Now we can write our code for delete.
+
+221
+00:08:09,000 --> 00:08:11,000
+Of course, we are not going to going to delete it.
+
+222
+00:08:11,000 --> 00:08:15,000
+We are going to simply say service. DeleteJob
+
+223
+00:08:18,000 --> 00:08:20,000
+bypassing the ID, which is PostId.
+
+224
+00:08:20,000 --> 00:08:21,000
+but of course service
+
+225
+00:08:21,000 --> 00:08:22,000
+and then we have to return something, right?
+
+226
+00:08:22,000 --> 00:08:24,000
+So I'll say we are not checking
+
+227
+00:08:24,000 --> 00:08:25,000
+for an exceptions or something here.
+
+228
+00:08:25,000 --> 00:08:28,000
+I would simply say deleted.
+
+229
+00:08:28,000 --> 00:08:30,000
+The ideal way is when you delete the value
+
+230
+00:08:30,000 --> 00:08:33,000
+from the repo layer, it should return something.
+
+231
+00:08:33,000 --> 00:08:34,000
+Okay?
+
+232
+00:08:34,000 --> 00:08:35,000
+If it says yes,
+
+233
+00:08:35,000 --> 00:08:37,000
+then you can accept the value here and return the status.
+
+234
+00:08:37,000 --> 00:08:39,000
+Depend upon what it is.
+
+235
+00:08:39,000 --> 00:08:40,000
+But at this point, I'm saying deleted
+
+236
+00:08:40,000 --> 00:08:43,000
+because I want to return something.
+
+237
+00:08:43,000 --> 00:08:44,000
+but we don't have this object.
+
+238
+00:08:44,000 --> 00:08:45,000
+So, or this method.
+
+239
+00:08:45,000 --> 00:08:46,000
+So we'll create one.
+
+240
+00:08:46,000 --> 00:08:48,000
+So I'll say create inservice.
+
+241
+00:08:48,000 --> 00:08:50,000
+In service, also, we are not gonna do anything.
+
+242
+00:08:50,000 --> 00:08:55,000
+We'll say, Hey repo, delete the job for the id postId.
+
+243
+00:08:55,000 --> 00:08:57,000
+And now in the repository layer,
+
+244
+00:08:57,000 --> 00:08:59,000
+we have to say delete again.
+
+245
+00:08:59,000 --> 00:09:04,000
+So here also we can say jobs, dot,
+
+246
+00:09:04,000 --> 00:09:05,000
+how are you going to remove?
+
+247
+00:09:05,000 --> 00:09:07,000
+Because this is not based on the index, right?
+
+248
+00:09:07,000 --> 00:09:09,000
+If it is based on index, we can simply delete it.
+
+249
+00:09:09,000 --> 00:09:11,000
+So again, we have to run a follow loop here
+
+250
+00:09:11,000 --> 00:09:14,000
+because we are not sure which one, which job to delete.
+
+251
+00:09:14,000 --> 00:09:17,000
+So we'll say JobPost JobPost : job,
+
+252
+00:09:17,000 --> 00:09:19,000
+and we'll compare the postId.
+
+253
+00:09:19,000 --> 00:09:21,000
+So we'll say JobPost.
+
+254
+00:09:21,000 --> 00:09:24,000
+I mean if the JobPost.getID
+
+255
+00:09:24,000 --> 00:09:28,000
+is matching with the post ID,
+
+256
+00:09:28,000 --> 00:09:30,000
+then we can simply delete it.
+
+257
+00:09:30,000 --> 00:09:32,000
+So it's say jobs dot, how do we delete?
+
+258
+00:09:32,000 --> 00:09:36,000
+We can say remove and we can pass the object itself,
+
+259
+00:09:36,000 --> 00:09:39,000
+whatever we are deleting there, right?
+
+260
+00:09:39,000 --> 00:09:41,000
+And okay, things are looking good.
+
+261
+00:09:41,000 --> 00:09:43,000
+It should delete because we are saying remove.
+
+262
+00:09:44,000 --> 00:09:46,000
+Okay, let's test both now.
+
+263
+00:09:46,000 --> 00:09:49,000
+Let's test the put and delete both.
+
+264
+00:09:49,000 --> 00:09:52,000
+By doing this changes, I will reset the application.
+
+265
+00:09:52,000 --> 00:09:54,000
+Let's head back to the Postman
+
+266
+00:09:54,000 --> 00:09:55,000
+and first we'll update instead of delete.
+
+267
+00:09:55,000 --> 00:09:57,000
+So I will say put,
+
+268
+00:09:57,000 --> 00:10:00,000
+and I want to update, let's say this object,
+
+269
+00:10:00,000 --> 00:10:03,000
+which is two, and we have already done the changes.
+
+270
+00:10:03,000 --> 00:10:04,000
+I will click on send.
+
+271
+00:10:04,000 --> 00:10:05,000
+Okay, it worked.
+
+272
+00:10:05,000 --> 00:10:08,000
+And you can see we got react developer here,
+
+273
+00:10:08,000 --> 00:10:09,000
+and this is coming from the repository.
+
+274
+00:10:09,000 --> 00:10:11,000
+Okay?
+
+275
+00:10:11,000 --> 00:10:12,000
+If you want to make sure it is working,
+
+276
+00:10:12,000 --> 00:10:14,000
+you can also send requests
+
+277
+00:10:14,000 --> 00:10:16,000
+for all the job post, click consent,
+
+278
+00:10:16,000 --> 00:10:18,000
+and you can see now second
+
+279
+00:10:18,000 --> 00:10:20,000
+is React Developer, not Frontend.
+
+280
+00:10:20,000 --> 00:10:23,000
+And we are saying record experience too.
+
+281
+00:10:23,000 --> 00:10:23,000
+Cool.
+
+282
+00:10:23,000 --> 00:10:26,000
+So the put is working, what about delete?
+
+283
+00:10:26,000 --> 00:10:27,000
+Let's try delete.
+
+284
+00:10:27,000 --> 00:10:29,000
+So we say delete and we'll say /3
+
+285
+00:10:29,000 --> 00:10:31,000
+because we're deleting the third job,
+
+286
+00:10:31,000 --> 00:10:34,000
+and I'll click on send.
+
+287
+00:10:34,000 --> 00:10:37,000
+Okay, something went wrong, internal server error.
+
+288
+00:10:39,000 --> 00:10:41,000
+Let's see what went wrong for delete.
+
+289
+00:10:41,000 --> 00:10:42,000
+It says null.
+
+290
+00:10:43,000 --> 00:10:45,000
+Something broke.
+
+291
+00:10:45,000 --> 00:10:49,000
+Okay, it says concurrent modification exception.
+
+292
+00:10:49,000 --> 00:10:51,000
+We are not returning anything.
+
+293
+00:10:51,000 --> 00:10:52,000
+Click on send again.
+
+294
+00:10:52,000 --> 00:10:54,000
+Okay, so maybe the earlier request,
+
+295
+00:10:55,000 --> 00:10:57,000
+it happened at the same time.
+
+296
+00:10:57,000 --> 00:10:59,000
+There was some issue with the latency or something,
+
+297
+00:10:59,000 --> 00:11:01,000
+but you can see now it says deleted.
+
+298
+00:11:01,000 --> 00:11:02,000
+So it is working.
+
+299
+00:11:02,000 --> 00:11:07,000
+So I'll go back to the JobPost and click on on send.
+
+300
+00:11:07,000 --> 00:11:09,000
+And if you go back, you can see we don't have three anymore.
+
+301
+00:11:09,000 --> 00:11:10,000
+Okay?
+
+302
+00:11:10,000 --> 00:11:11,000
+It's working.
+
+303
+00:11:11,000 --> 00:11:14,000
+So if you go back, still showing some problem.
+
+304
+00:11:14,000 --> 00:11:16,000
+But anyway, we were able to delete devalue.
+
+305
+00:11:16,000 --> 00:11:19,000
+So that's how basically we use the put mapping
+
+306
+00:11:19,000 --> 00:11:21,000
+and the delete mapping.
+
+307
+00:11:21,000 --> 00:11:22,000
+So I hope this makes sense.
+
+308
+00:11:22,000 --> 00:11:25,000
+And you can also enhance this particular code if you want.
+
+309
+00:11:25,000 --> 00:11:28,000
+Depend upon how do you want to return this status?
+
+310
+00:11:28,000 --> 00:11:31,000
+We are just saying deleted, but you can send something else.
+
+311
+00:11:31,000 --> 00:11:33,000
+So that's it from this video where we talked about
+
+312
+00:11:33,000 --> 00:11:35,000
+the put mapping and delete mapping.
+
diff --git a/15 - REST using Spring Boot/010 Source-Code.url b/15 - REST using Spring Boot/010 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..6d7418c04d32ff7c96b0db567cc4133b750bed16
--- /dev/null
+++ b/15 - REST using Spring Boot/010 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/9%20REST%20using%20Spring%20Boot/8.10%20Put%20and%20Delete%20Mapping/spring-boot-rest4
\ No newline at end of file
diff --git a/15 - REST using Spring Boot/011 Content Negotiation_en.srt b/15 - REST using Spring Boot/011 Content Negotiation_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..d572058e5fd8c5af8274586b6dbe252abc247348
--- /dev/null
+++ b/15 - REST using Spring Boot/011 Content Negotiation_en.srt	
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+1
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+(logo chimes)
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+-: In this video, we'll talk about content negotiation.
+
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+Now, what I mean by that.
+
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+So, let's say if I go back to my Postman,
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+and when you send a request here,
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+you can see we are getting all this data in the JSON format.
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+But what if you want in XML format? Can we do that?
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+Actually, we can.
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+So, if you can go back to the Headers here,
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+and in the Header, you can mention the key that you want.
+
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+So, basically, you want to accept not JSON,
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+but you want to accept an XML.
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+So, you can simply say application/xml.
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+Now, when you do that, when you send a request for XML,
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+it'll get the XML data from the server.
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+Oh, but unfortunately, it's not working.
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+You can see we got the error, which is 406.
+
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+Why it's not working?
+
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+See, the thing is,
+
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+whenever you want to serialize your data,
+
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+so whatever data you are sending,
+
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+remember, all your data,
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+which you're returning from this server,
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+if you can see here for jobPosts,
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+you are returning a list of objects.
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+And what you are receiving on the client side is JSON.
+
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+Who is converting it?
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+Someone should be there, right?
+
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+Otherwise, it's not magic
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+that it will be automatically converted into a JSON format.
+
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+Now, to do that, we have a special library,
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+and we have not added that library.
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+Basically, if you can expand your external libraries,
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+you will find a library called Jackson.
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+Now, this is Jackson who is responsible
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+to convert your objects.
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+The Java objects into JSON.
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+And, of course, this is not the only library available,
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+but Spring uses Jackson by default.
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+So, just to reiterate, it is Jackson Library
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+who is converting your object into JSON.
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+Okay, but then why XML is not working?
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+It should also return XML format, right?
+
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+See, the thing is,
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+by default, the Jackson Library, which you have added,
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+only works with JSON.
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+It'll not work with XML.
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+If you want it to work,
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+basically, we have to add one more library,
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+of course, of Jackson,
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+but with the XML support.
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+So, you have to go to your pom.xml file.
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+And here, we have to add that for the library,
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+which is for the Jackson XML.
+
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+Now, to do that, I will go back to my browser,
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+and we will go to our favorite website, mvnrepository.
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+And here, you just have to search for Jackson XML.
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+So, this is a library which you have to use,
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+which is Jackson Dataformat XML.
+
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+Click here. And now, we have to pick a version.
+
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+Now, which version to pick up?
+
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+Now, whatever version you have for the Jackson code,
+
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+just pick up the same version.
+
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+So, you can see the version which we're using here
+
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+is 2.15.3.
+
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+Let's pick up the same one.
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+Copy dependency, go back to your project, and paste it here.
+
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+That's it.
+
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+Once you add this,
+
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+of course, since we have changed the Maven,
+
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+we might need to reload this just to be on the safer side,
+
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+and you should be able to find your XML here somewhere.
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+So, you can see we got Dataformat XML.
+
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+Now, I think it'll do the work.
+
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+Let's restart the application. Go back to Postman.
+
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+And now, with the same application/xml,
+
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+click on Send and Voila.
+
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+You can see we got the data in the XML format.
+
+79
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+So, in the earlier case, why it was not working?
+
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+Because we were not having any library
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+who will convert your object into XML.
+
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+And now, with the help of the library,
+
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+we got the XML data here.
+
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+Again, the same data, but in the XML format.
+
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+Now, if you look at the formats,
+
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+of course, JSON looks better than XML,
+
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+but let's say if you have an application
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+where you just want to consume XML,
+
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+then you don't have a choice, right?
+
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+You have to use XML format there.
+
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+So, this works, but what if you have one more restriction,
+
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+that from the server side, only JSON should go.
+
+93
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+You don't want your client to accept XML.
+
+94
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+One way you can remove the library.
+
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+Or, when you turn the data here, you can also mention
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+that this particular method will only work with JSON.
+
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+Can we do that?
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+Can we negotiate a content whereby,
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+by saying, let's only send JSON, let's not send XML.
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+The way you do that is,
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+I mean, of course, you cannot specify
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+that you don't want to send XML,
+
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+but you can specify what you want to send.
+
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+So, first of all, which was the default path,
+
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+let's mention the variable name path there, give a comma,
+
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+and you can say it'll only produce,
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+in the curly brackets, you can mention,
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+and you can mention multiple things, not just one.
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+So, in the double quotes, you can mention application/json.
+
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+Now, by doing this, what you're saying is, hey, you know,
+
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+this particular method will only return the JSON data,
+
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+not XML.
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+I mean, we are saying it'll only return JSON,
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+we are not saying you're not going to return XML.
+
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+Let's not talk about negative stuff.
+
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+We can say positive stuff.
+
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+What you want to return? JSON.
+
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+But if you request for something else.
+
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+If you go back here,
+
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+and you can see I'm still requesting for XML,
+
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+click on Send.
+
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+It'll not work.
+
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+It'll say Not Acceptable.
+
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+You got this status error, 406.
+
+125
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+But yeah, if you request for JSON,
+
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+and by default it will send JSON request.
+
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+Click on Send.
+
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+It works with JSON, but not with XML.
+
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+Likewise, you can also send data.
+
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+Example, let's say if you want to create a new post now.
+
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+Okay, so let's say it'll work with JSON,
+
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+and only work with JSON, let's say.
+
+133
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+So, what I will do is...
+
+134
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+Okay, we've got JSON.
+
+135
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+Let me copy this, and let me create a new post.
+
+136
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+So, this was a POST request. I will go back to the body.
+
+137
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+I already have a body here,
+
+138
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+so I don't have to copy anything.
+
+139
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+Let me create a sixth post here.
+
+140
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+But then what I can do is, in the Headers,
+
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+I can say we are basically sending,
+
+142
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+so we can specify the content type.
+
+143
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+And by default, it'll use JSON,
+
+144
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+but let's say if I specifically mention
+
+145
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+that we are sending the JSON format, okay?
+
+146
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+So, in the post, we are sending JSON,
+
+147
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+but let's say on the server side,
+
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+if you mention that you want to accept only XML,
+
+149
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+can we do that?
+
+150
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+Because what we are saying is, we are saying produce,
+
+151
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+what it produces, but what about what it consumes?
+
+152
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+So, let's say in the POST mapping,
+
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+I will say path, and give a comma here,
+
+154
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+and we can also specify what it consumes.
+
+155
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+So, if you say this consumes only XML.
+
+156
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+So now, we are saying that it'll only consume XML.
+
+157
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+Let's restart the app.
+
+158
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+Let's go back to Postman and click on Send.
+
+159
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+You can see we got an error. It says Unsupported Media Type.
+
+160
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+So, when you send data,
+
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+and if you're sending JSON,
+
+162
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+the only acceptable there is XML, then this will not work.
+
+163
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+So, what we are doing is we are negotiating the content.
+
+164
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+We are saying, "Hey, you know,
+
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+what I can produce and what I can consume?
+
+166
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+I can specify that."
+
+167
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+Most of the time, we don't do it.
+
+168
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+But let's say if you have a special requirement
+
+169
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+where you say, "I want to specify what it produce,
+
+170
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+I want to specify what it consumes."
+
+171
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+You can do that with the help of producers and consumes.
+
+172
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+So, yeah, that's about how do you do content negotiation.
+
+173
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+That's how you specify which format you want to work with.
+
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+And by default, in your Spring project,
+
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+you'll be getting JSON support.
+
+176
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+If you want XML support, then manually,
+
+177
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+you have to add this library, which is the Dataformat XML.
+
+178
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+So, Jackson Dataformat XML.
+
+179
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+That's it from this video. See you in the next part.
+
diff --git a/15 - REST using Spring Boot/external-links.txt b/15 - REST using Spring Boot/external-links.txt
new file mode 100644
index 0000000000000000000000000000000000000000..980f0b74e37750bdcb5fdb47e1501219511bd879
--- /dev/null
+++ b/15 - REST using Spring Boot/external-links.txt	
@@ -0,0 +1,15 @@
+
+004 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/80e0c059c5c259ef6009838a934ed9e92865c3d7/React%20UI
+
+006 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/9%20REST%20using%20Spring%20Boot/8.6%20Creating%20a%20Rest%20Controller/spring-boot-rest
+
+008 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/9%20REST%20using%20Spring%20Boot/8.8%20PathVariable/spring-boot-rest
+
+009 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/9%20REST%20using%20Spring%20Boot/8.9%20Sending%20Data%20and%20RequestBody/spring-boot-rest
+
+010 Source-Code
+https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/9%20REST%20using%20Spring%20Boot/8.10%20Put%20and%20Delete%20Mapping/spring-boot-rest4
diff --git a/16 - Spring Data JPA/001 Spring Data JPA Introduction_en.srt b/16 - Spring Data JPA/001 Spring Data JPA Introduction_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..a97dcbb2c52e52ddb739fa70d2bda3b931c4ff00
--- /dev/null
+++ b/16 - Spring Data JPA/001 Spring Data JPA Introduction_en.srt	
@@ -0,0 +1,276 @@
+1
+00:00:00,000 --> 00:00:03,000
+(soft bright music)
+
+2
+00:00:03,000 --> 00:00:07,000
+-: In this section we'll talk about Spring Data JPA.
+
+3
+00:00:07,000 --> 00:00:09,000
+The other thing is whatever we have done till now,
+
+4
+00:00:09,000 --> 00:00:11,000
+we have talked about a job portal
+
+5
+00:00:11,000 --> 00:00:13,000
+and we were able to build it.
+
+6
+00:00:13,000 --> 00:00:15,000
+So basically we have different layers
+
+7
+00:00:15,000 --> 00:00:17,000
+and in this controller layer,
+
+8
+00:00:17,000 --> 00:00:18,000
+we are able to create the methods
+
+9
+00:00:18,000 --> 00:00:19,000
+which will accept the get request,
+
+10
+00:00:19,000 --> 00:00:22,000
+post request, put request, delete request,
+
+11
+00:00:22,000 --> 00:00:23,000
+and things are working out.
+
+12
+00:00:23,000 --> 00:00:26,000
+But of course the controller layer is responsible
+
+13
+00:00:26,000 --> 00:00:28,000
+just to accept the request
+
+14
+00:00:28,000 --> 00:00:29,000
+and give something back to the client.
+
+15
+00:00:29,000 --> 00:00:32,000
+But it is the service layer who will do the operations.
+
+16
+00:00:32,000 --> 00:00:35,000
+And we have not done much of the logical stuff.
+
+17
+00:00:35,000 --> 00:00:37,000
+But what if you want to face data from database?
+
+18
+00:00:37,000 --> 00:00:40,000
+And that's why we have a repository layer
+
+19
+00:00:40,000 --> 00:00:42,000
+in which you have written the code.
+
+20
+00:00:42,000 --> 00:00:44,000
+But in the repo layer, we have not actually connected
+
+21
+00:00:44,000 --> 00:00:46,000
+with database, right?
+
+22
+00:00:46,000 --> 00:00:49,000
+So we were able to build stuff but without database.
+
+23
+00:00:49,000 --> 00:00:53,000
+Now in this section we'll complete it with database.
+
+24
+00:00:53,000 --> 00:00:55,000
+Now the way you can implement that is with the,
+
+25
+00:00:55,000 --> 00:00:59,000
+you can simply use normal JDPC, you can use Spring JDPC.
+
+26
+00:00:59,000 --> 00:01:01,000
+The way we have done before.
+
+27
+00:01:01,000 --> 00:01:03,000
+We can also implement spring ORM
+
+28
+00:01:03,000 --> 00:01:06,000
+where you have to do a lot of code by yourself.
+
+29
+00:01:06,000 --> 00:01:08,000
+But we are going to use the easiest module
+
+30
+00:01:08,000 --> 00:01:11,000
+of spring framework, which is Spring Data JPA,
+
+31
+00:01:11,000 --> 00:01:14,000
+which will make our work very, very easy.
+
+32
+00:01:14,000 --> 00:01:17,000
+And of course, instead of starting with the portal,
+
+33
+00:01:17,000 --> 00:01:19,000
+I mean instead of starting with the job application,
+
+34
+00:01:19,000 --> 00:01:21,000
+let's create a new project
+
+35
+00:01:21,000 --> 00:01:24,000
+and let's understand how Spring Data JPA works
+
+36
+00:01:24,000 --> 00:01:26,000
+and then we can in integrate that.
+
+37
+00:01:26,000 --> 00:01:27,000
+Now what project we are going to build,
+
+38
+00:01:27,000 --> 00:01:31,000
+of course we'll try to not jump into a new project.
+
+39
+00:01:31,000 --> 00:01:33,000
+If you remember we have talked about the student project
+
+40
+00:01:33,000 --> 00:01:35,000
+when we talked about Spring JDBC.
+
+41
+00:01:35,000 --> 00:01:37,000
+Now I do have a code ready with me.
+
+42
+00:01:37,000 --> 00:01:40,000
+So if you can see, we have this spring JDBC here.
+
+43
+00:01:40,000 --> 00:01:42,000
+And what we have done is we have a main method
+
+44
+00:01:42,000 --> 00:01:45,000
+and then in the pom.xml file,
+
+45
+00:01:45,000 --> 00:01:47,000
+we have added the spring boot JDBC.
+
+46
+00:01:47,000 --> 00:01:49,000
+And then we have connected this application
+
+47
+00:01:49,000 --> 00:01:51,000
+with H2 as well as Postgres.
+
+48
+00:01:51,000 --> 00:01:54,000
+So we did with H2 first
+
+49
+00:01:54,000 --> 00:01:55,000
+and then we moved towards Postgres.
+
+50
+00:01:55,000 --> 00:01:58,000
+In the student class, we have a very simple class.
+
+51
+00:01:58,000 --> 00:02:02,000
+Here we have three variables, role number, name, marks.
+
+52
+00:02:02,000 --> 00:02:06,000
+And next we have a student repo here
+
+53
+00:02:06,000 --> 00:02:09,000
+in which we were able to use JDBC template.
+
+54
+00:02:09,000 --> 00:02:11,000
+And then based on what you want,
+
+55
+00:02:11,000 --> 00:02:14,000
+maybe you want to save data, maybe you want to fetch data.
+
+56
+00:02:14,000 --> 00:02:15,000
+We have written the query.
+
+57
+00:02:15,000 --> 00:02:17,000
+Literally we have written the SQL query.
+
+58
+00:02:17,000 --> 00:02:19,000
+A lot of people like SQL queries.
+
+59
+00:02:19,000 --> 00:02:21,000
+And of course it's not a bad thing.
+
+60
+00:02:21,000 --> 00:02:24,000
+But then what if you can avoid writing SQL queries?
+
+61
+00:02:24,000 --> 00:02:26,000
+Can we do that? Can we simply avoid something?
+
+62
+00:02:26,000 --> 00:02:27,000
+Okay, when I say something,
+
+63
+00:02:27,000 --> 00:02:29,000
+when you're building a Java application,
+
+64
+00:02:29,000 --> 00:02:31,000
+why to work with SQL?
+
+65
+00:02:31,000 --> 00:02:35,000
+And that's where the concept of ORM comes to the picture.
+
+66
+00:02:35,000 --> 00:02:38,000
+So even before we talk about Spring Data JPA,
+
+67
+00:02:38,000 --> 00:02:40,000
+let's talk about ORM and you'll be thinking,
+
+68
+00:02:40,000 --> 00:02:43,000
+hey, why we are talking about ORM when we talked about JPA?
+
+69
+00:02:43,000 --> 00:02:45,000
+You will understand that in the next video.
+
diff --git a/16 - Spring Data JPA/002 What is ORM and JPA_en.srt b/16 - Spring Data JPA/002 What is ORM and JPA_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..3a0cfdabc563ea7ee2bba0e553ce38e88328a12e
--- /dev/null
+++ b/16 - Spring Data JPA/002 What is ORM and JPA_en.srt	
@@ -0,0 +1,904 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle intro music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: Now let's talk about ORM.
+
+3
+00:00:05,000 --> 00:00:09,000
+I know the topic, the entire section, talks about JPA,
+
+4
+00:00:09,000 --> 00:00:10,000
+but we'll start with ORM
+
+5
+00:00:10,000 --> 00:00:14,000
+and then we'll try to connect ORM with JPA, okay?
+
+6
+00:00:14,000 --> 00:00:15,000
+So let's talk about ORM.
+
+7
+00:00:15,000 --> 00:00:19,000
+Now ORM stands for Object Relational Mapping.
+
+8
+00:00:19,000 --> 00:00:20,000
+Now why do we need this?
+
+9
+00:00:20,000 --> 00:00:21,000
+Now think about this.
+
+10
+00:00:21,000 --> 00:00:22,000
+When you talk about Java,
+
+11
+00:00:22,000 --> 00:00:25,000
+Java is our object-oriented programming, right?
+
+12
+00:00:25,000 --> 00:00:28,000
+Which means the most important thing here is object, okay?
+
+13
+00:00:28,000 --> 00:00:30,000
+So if anybody wanted to do anything,
+
+14
+00:00:30,000 --> 00:00:31,000
+you think about object first.
+
+15
+00:00:31,000 --> 00:00:34,000
+Let's say if you want to build a E-commerce website,
+
+16
+00:00:34,000 --> 00:00:35,000
+everything becomes object.
+
+17
+00:00:35,000 --> 00:00:37,000
+Your catalog becomes an object,
+
+18
+00:00:37,000 --> 00:00:39,000
+your users becomes an object,
+
+19
+00:00:39,000 --> 00:00:40,000
+your admin becomes an object.
+
+20
+00:00:40,000 --> 00:00:43,000
+So everything in there is an object right?
+
+21
+00:00:43,000 --> 00:00:46,000
+Now if you are representing everything
+
+22
+00:00:46,000 --> 00:00:48,000
+in the Java world as object,
+
+23
+00:00:48,000 --> 00:00:51,000
+and we know that objects are created
+
+24
+00:00:51,000 --> 00:00:53,000
+with the help of classes, right?
+
+25
+00:00:53,000 --> 00:00:55,000
+Class is a blueprint for the object.
+
+26
+00:00:55,000 --> 00:00:56,000
+In class, you mention the class keyword,
+
+27
+00:00:56,000 --> 00:00:58,000
+then you mention the class name.
+
+28
+00:00:58,000 --> 00:00:59,000
+And of course, in this class,
+
+29
+00:00:59,000 --> 00:01:00,000
+we'll be having different variables.
+
+30
+00:01:00,000 --> 00:01:01,000
+Let's say we have a student class
+
+31
+00:01:01,000 --> 00:01:03,000
+and in this class we have three variables.
+
+32
+00:01:03,000 --> 00:01:05,000
+RollNo, name, and marks, okay?
+
+33
+00:01:05,000 --> 00:01:08,000
+Now these three variables becomes a property
+
+34
+00:01:08,000 --> 00:01:09,000
+for a class, right?
+
+35
+00:01:09,000 --> 00:01:11,000
+And of course, in this class, you can have some methods,
+
+36
+00:01:11,000 --> 00:01:13,000
+but methods at this point is not important for us.
+
+37
+00:01:13,000 --> 00:01:14,000
+Let's only talk about that data.
+
+38
+00:01:14,000 --> 00:01:16,000
+So when you talk about a class,
+
+39
+00:01:16,000 --> 00:01:19,000
+which is student in this case, we got three variables.
+
+40
+00:01:19,000 --> 00:01:20,000
+And for the student class,
+
+41
+00:01:20,000 --> 00:01:22,000
+we can create multiple objects, not just one.
+
+42
+00:01:22,000 --> 00:01:25,000
+We can have 10, 20, 100, 1 million.
+
+43
+00:01:25,000 --> 00:01:25,000
+That's your choice,
+
+44
+00:01:25,000 --> 00:01:28,000
+provided your machine can bear 1 million objects,
+
+45
+00:01:28,000 --> 00:01:30,000
+but we can create any number of objects.
+
+46
+00:01:30,000 --> 00:01:33,000
+Now what makes all this objects different?
+
+47
+00:01:33,000 --> 00:01:34,000
+It's the data, right?
+
+48
+00:01:34,000 --> 00:01:37,000
+Of course, when you have 10 students object,
+
+49
+00:01:37,000 --> 00:01:38,000
+every student will have a different data.
+
+50
+00:01:38,000 --> 00:01:39,000
+They will have a different roll number,
+
+51
+00:01:39,000 --> 00:01:40,000
+they will have a different name,
+
+52
+00:01:40,000 --> 00:01:42,000
+they will have a different marks.
+
+53
+00:01:42,000 --> 00:01:44,000
+Maybe they will have the same marks if they're copying.
+
+54
+00:01:44,000 --> 00:01:47,000
+But the point is, the data, most of the time,
+
+55
+00:01:47,000 --> 00:01:48,000
+will be different.
+
+56
+00:01:48,000 --> 00:01:51,000
+And that's what makes the object different.
+
+57
+00:01:51,000 --> 00:01:52,000
+Now come back to database world.
+
+58
+00:01:52,000 --> 00:01:53,000
+Now why are we talking about database
+
+59
+00:01:53,000 --> 00:01:55,000
+is because you want to store data.
+
+60
+00:01:55,000 --> 00:01:57,000
+I mean, that's very important, right?
+
+61
+00:01:57,000 --> 00:01:58,000
+And we know the importance of database.
+
+62
+00:01:58,000 --> 00:02:01,000
+So let's directly talk about how do you store data.
+
+63
+00:02:01,000 --> 00:02:03,000
+Now in the world of database,
+
+64
+00:02:03,000 --> 00:02:05,000
+we have different ways of storing data.
+
+65
+00:02:05,000 --> 00:02:08,000
+Primarily, we have relational databases
+
+66
+00:02:08,000 --> 00:02:10,000
+and then we have a NoSQL databases.
+
+67
+00:02:10,000 --> 00:02:12,000
+Now in the relational database,
+
+68
+00:02:12,000 --> 00:02:13,000
+we normally follow tables, right?
+
+69
+00:02:13,000 --> 00:02:15,000
+So in one database, you'll be having multiple tables.
+
+70
+00:02:15,000 --> 00:02:18,000
+Might be you have tables which are related, right?
+
+71
+00:02:18,000 --> 00:02:21,000
+So we call them a parent table or child table,
+
+72
+00:02:21,000 --> 00:02:23,000
+or a primary key or a foreign key.
+
+73
+00:02:23,000 --> 00:02:25,000
+So we connect them with primary key, foreign key.
+
+74
+00:02:25,000 --> 00:02:28,000
+Complex concepts, but important to know.
+
+75
+00:02:28,000 --> 00:02:30,000
+On the other hand, we have a NoSQL world,
+
+76
+00:02:30,000 --> 00:02:34,000
+where you don't actually store data in a table structure,
+
+77
+00:02:34,000 --> 00:02:36,000
+you store them a document format
+
+78
+00:02:36,000 --> 00:02:37,000
+or maybe table in some framework.
+
+79
+00:02:37,000 --> 00:02:39,000
+Example in Cassandra, we do that.
+
+80
+00:02:39,000 --> 00:02:42,000
+But the idea is we can directly store data
+
+81
+00:02:42,000 --> 00:02:45,000
+in the database without using SQL query.
+
+82
+00:02:45,000 --> 00:02:47,000
+Or there might be some other query language.
+
+83
+00:02:47,000 --> 00:02:49,000
+Example in Cassandra, we use SQL,
+
+84
+00:02:49,000 --> 00:02:51,000
+but the idea is we have two different worlds.
+
+85
+00:02:51,000 --> 00:02:53,000
+Example in MongoDB, we actually store data
+
+86
+00:02:53,000 --> 00:02:55,000
+as a document, right?
+
+87
+00:02:55,000 --> 00:02:57,000
+Now let's say if we talk about relational database,
+
+88
+00:02:57,000 --> 00:02:59,000
+let's focus on that here.
+
+89
+00:02:59,000 --> 00:03:00,000
+Now if we talk about relational database,
+
+90
+00:03:00,000 --> 00:03:03,000
+we store data in a tabular format, right?
+
+91
+00:03:03,000 --> 00:03:06,000
+That means, even if you want to store a student data,
+
+92
+00:03:06,000 --> 00:03:09,000
+you have to store that in a tabular format.
+
+93
+00:03:09,000 --> 00:03:11,000
+Now how do you create a table?
+
+94
+00:03:11,000 --> 00:03:13,000
+Of course, you don't directly create a table.
+
+95
+00:03:13,000 --> 00:03:14,000
+You think about a table, right?
+
+96
+00:03:14,000 --> 00:03:16,000
+What should be the table name?
+
+97
+00:03:16,000 --> 00:03:18,000
+How many columns you want,
+
+98
+00:03:18,000 --> 00:03:20,000
+and what should be the name of the column?
+
+99
+00:03:20,000 --> 00:03:21,000
+What should be the type of the column?
+
+100
+00:03:21,000 --> 00:03:23,000
+So we decide all those things.
+
+101
+00:03:23,000 --> 00:03:28,000
+Now what if we can directly connect your class and a table?
+
+102
+00:03:28,000 --> 00:03:29,000
+Okay?
+
+103
+00:03:29,000 --> 00:03:31,000
+So example, if I give you a class,
+
+104
+00:03:31,000 --> 00:03:34,000
+you should be able to create a table for it.
+
+105
+00:03:34,000 --> 00:03:35,000
+And the way we can do that
+
+106
+00:03:35,000 --> 00:03:37,000
+is what if you can take a class name
+
+107
+00:03:37,000 --> 00:03:39,000
+and make it a table name?
+
+108
+00:03:39,000 --> 00:03:40,000
+So the class name is student,
+
+109
+00:03:40,000 --> 00:03:43,000
+table name becomes student, as simple as that.
+
+110
+00:03:43,000 --> 00:03:44,000
+How about the columns?
+
+111
+00:03:44,000 --> 00:03:46,000
+How do you know what columns you need?
+
+112
+00:03:46,000 --> 00:03:50,000
+So if I ask you, "Hey, create a table for me for a student."
+
+113
+00:03:50,000 --> 00:03:52,000
+You will say, "Give me the column names."
+
+114
+00:03:52,000 --> 00:03:55,000
+I will say, "Okay, this is my class, take it from here."
+
+115
+00:03:55,000 --> 00:03:57,000
+Now you will say, "Okay, I got a class.
+
+116
+00:03:57,000 --> 00:04:01,000
+This class has three variables or three properties.
+
+117
+00:04:01,000 --> 00:04:06,000
+Let me create three columns, rollNo, name, and marks."
+
+118
+00:04:06,000 --> 00:04:09,000
+So basically, we have solved the problem of table name
+
+119
+00:04:09,000 --> 00:04:10,000
+and table column names,
+
+120
+00:04:10,000 --> 00:04:12,000
+and how many columns you need.
+
+121
+00:04:12,000 --> 00:04:14,000
+But what about a data type?
+
+122
+00:04:14,000 --> 00:04:15,000
+Of course, right on table also,
+
+123
+00:04:15,000 --> 00:04:18,000
+you have to specify the type of column.
+
+124
+00:04:18,000 --> 00:04:20,000
+Now this type will be coming from the Java world.
+
+125
+00:04:20,000 --> 00:04:22,000
+So you can say, "Okay, so we have a rollNo,
+
+126
+00:04:22,000 --> 00:04:23,000
+which is our type INT.
+
+127
+00:04:23,000 --> 00:04:26,000
+Let's make type INT here in table as well.
+
+128
+00:04:26,000 --> 00:04:27,000
+In name, we have a string.
+
+129
+00:04:27,000 --> 00:04:30,000
+Let's make a VARCHAR or text here in the table.
+
+130
+00:04:30,000 --> 00:04:33,000
+We have marks, which is again INT,
+
+131
+00:04:33,000 --> 00:04:34,000
+let's make it INT here.
+
+132
+00:04:34,000 --> 00:04:35,000
+So you know what we are doing?
+
+133
+00:04:35,000 --> 00:04:38,000
+We are trying to create a table from a class.
+
+134
+00:04:38,000 --> 00:04:42,000
+If you can do it, can't we ask a framework
+
+135
+00:04:42,000 --> 00:04:43,000
+or a library to do it for us?
+
+136
+00:04:43,000 --> 00:04:45,000
+So let's say we have a library and we say,
+
+137
+00:04:45,000 --> 00:04:47,000
+"Hey library, this is my class.
+
+138
+00:04:47,000 --> 00:04:48,000
+Give me a table."
+
+139
+00:04:48,000 --> 00:04:50,000
+And that is something we can do
+
+140
+00:04:50,000 --> 00:04:53,000
+with the help of ORM tool.
+
+141
+00:04:53,000 --> 00:04:54,000
+Because what we have done here
+
+142
+00:04:54,000 --> 00:04:58,000
+is we tried to connect the object world
+
+143
+00:04:58,000 --> 00:05:00,000
+and relational world and we tried to map it,
+
+144
+00:05:00,000 --> 00:05:03,000
+object relational mapping.
+
+145
+00:05:03,000 --> 00:05:04,000
+Okay, that's the concept.
+
+146
+00:05:04,000 --> 00:05:07,000
+Now question arise how you are going to implement it.
+
+147
+00:05:07,000 --> 00:05:10,000
+And that's why we have different ORM tools.
+
+148
+00:05:10,000 --> 00:05:11,000
+One of them is Hibernate.
+
+149
+00:05:11,000 --> 00:05:12,000
+We got TopLink.
+
+150
+00:05:12,000 --> 00:05:14,000
+There are multiple options, right?
+
+151
+00:05:14,000 --> 00:05:15,000
+So it's not just one.
+
+152
+00:05:15,000 --> 00:05:17,000
+We have list of ORM tools.
+
+153
+00:05:17,000 --> 00:05:20,000
+The most famous one is Hibernate, okay?
+
+154
+00:05:20,000 --> 00:05:21,000
+So you can simply use Hibernate
+
+155
+00:05:21,000 --> 00:05:23,000
+and you can implement this concept.
+
+156
+00:05:23,000 --> 00:05:25,000
+So basically, we have a ORM concept.
+
+157
+00:05:25,000 --> 00:05:26,000
+The tool is Hibernate.
+
+158
+00:05:26,000 --> 00:05:28,000
+So using Hibernate, you can ask,
+
+159
+00:05:28,000 --> 00:05:30,000
+I mean, talk to the library, which I was talking about.
+
+160
+00:05:30,000 --> 00:05:31,000
+That's Hibernate.
+
+161
+00:05:31,000 --> 00:05:33,000
+So you can say, "Hey, Hibernate,
+
+162
+00:05:33,000 --> 00:05:37,000
+I have a class here and I got the objects of this class.
+
+163
+00:05:37,000 --> 00:05:40,000
+Just store these objects in the database."
+
+164
+00:05:40,000 --> 00:05:42,000
+Hibernate will say, "Okay, done."
+
+165
+00:05:42,000 --> 00:05:45,000
+Because I know how to create those table based on a class.
+
+166
+00:05:45,000 --> 00:05:48,000
+Okay, but then we have one question here.
+
+167
+00:05:48,000 --> 00:05:50,000
+We talked about the columns and table name,
+
+168
+00:05:50,000 --> 00:05:52,000
+what about the rules?
+
+169
+00:05:52,000 --> 00:05:56,000
+Now every object in the Java world becomes one row.
+
+170
+00:05:56,000 --> 00:05:58,000
+So let's say for a student, we have 10 objects
+
+171
+00:05:58,000 --> 00:06:00,000
+and all this object will have a different data.
+
+172
+00:06:00,000 --> 00:06:04,000
+And this becomes your 10 rows in the table.
+
+173
+00:06:04,000 --> 00:06:06,000
+Hibernate says, "Every time you give an object to save,
+
+174
+00:06:06,000 --> 00:06:09,000
+I will create a new row," as simple as that.
+
+175
+00:06:09,000 --> 00:06:11,000
+And every time you say, "Hey, I want some data."
+
+176
+00:06:11,000 --> 00:06:14,000
+You want some data in the object format,
+
+177
+00:06:14,000 --> 00:06:18,000
+the Hibernate will get it from the table and give it to you.
+
+178
+00:06:18,000 --> 00:06:21,000
+So one row becomes one object, right?
+
+179
+00:06:21,000 --> 00:06:23,000
+And the way it was before, one object becomes one row.
+
+180
+00:06:23,000 --> 00:06:27,000
+So that's ORM and that's Hibernate.
+
+181
+00:06:27,000 --> 00:06:30,000
+Okay, but then we still not talked about JPA here.
+
+182
+00:06:30,000 --> 00:06:31,000
+See, the thing is, as I mentioned before,
+
+183
+00:06:31,000 --> 00:06:33,000
+there are different tools available for ORM, right?
+
+184
+00:06:33,000 --> 00:06:35,000
+Hibernate is not the only one.
+
+185
+00:06:35,000 --> 00:06:37,000
+And different projects can use different tools.
+
+186
+00:06:37,000 --> 00:06:40,000
+Maybe in one project, you're using Hibernate.
+
+187
+00:06:40,000 --> 00:06:41,000
+In other project, you're using something else.
+
+188
+00:06:41,000 --> 00:06:43,000
+And now let's say you're using Hibernate
+
+189
+00:06:43,000 --> 00:06:46,000
+and you want to switch to some other tool.
+
+190
+00:06:46,000 --> 00:06:48,000
+You have to basically change the entire code.
+
+191
+00:06:48,000 --> 00:06:51,000
+Can't we just have a common specification,
+
+192
+00:06:51,000 --> 00:06:53,000
+where you can say, "Okay, you know,
+
+193
+00:06:53,000 --> 00:06:56,000
+let's not be very specific to Hibernate or this tool.
+
+194
+00:06:56,000 --> 00:06:59,000
+Let's build for some specification."
+
+195
+00:06:59,000 --> 00:07:00,000
+And all these tools
+
+196
+00:07:00,000 --> 00:07:02,000
+are going to implement that specification.
+
+197
+00:07:02,000 --> 00:07:05,000
+Now what will happen is, even if you change your library
+
+198
+00:07:05,000 --> 00:07:07,000
+from Hibernate to something else,
+
+199
+00:07:07,000 --> 00:07:09,000
+you don't have to change a lot of your code
+
+200
+00:07:09,000 --> 00:07:11,000
+because you have not specified it for Hibernate.
+
+201
+00:07:11,000 --> 00:07:14,000
+You have worked with that specification.
+
+202
+00:07:14,000 --> 00:07:18,000
+And that specification is called JPA,
+
+203
+00:07:18,000 --> 00:07:21,000
+which is Java Persistence API, okay?
+
+204
+00:07:21,000 --> 00:07:24,000
+And Hibernate basically implements JPA.
+
+205
+00:07:24,000 --> 00:07:24,000
+It's awesome, right?
+
+206
+00:07:24,000 --> 00:07:28,000
+Likewise, we have something called Spring ORM, okay?
+
+207
+00:07:28,000 --> 00:07:31,000
+So in Spring, we can use Spring ORM to achieve that.
+
+208
+00:07:31,000 --> 00:07:33,000
+So if you are using Hibernate,
+
+209
+00:07:33,000 --> 00:07:34,000
+it provides you some extra features.
+
+210
+00:07:34,000 --> 00:07:36,000
+But then Spring ORM connects
+
+211
+00:07:36,000 --> 00:07:39,000
+with a Spring framework in a good way.
+
+212
+00:07:39,000 --> 00:07:40,000
+So you can use Spring ORM there.
+
+213
+00:07:40,000 --> 00:07:42,000
+Both this, Hibernate and Spring ORM,
+
+214
+00:07:42,000 --> 00:07:44,000
+basically implements the JPA.
+
+215
+00:07:44,000 --> 00:07:46,000
+Now if you try to use Hibernate, of course,
+
+216
+00:07:46,000 --> 00:07:48,000
+we can do that in this project.
+
+217
+00:07:48,000 --> 00:07:51,000
+But if you try to use Hibernate or Spring ORM,
+
+218
+00:07:51,000 --> 00:07:53,000
+you will have to write a lot of code.
+
+219
+00:07:53,000 --> 00:07:57,000
+And that can be simplified with Spring Data JPA.
+
+220
+00:07:57,000 --> 00:08:01,000
+So Spring Data JPA is a module in Spring ecosystem,
+
+221
+00:08:01,000 --> 00:08:02,000
+which will simplify your task
+
+222
+00:08:02,000 --> 00:08:04,000
+and you can build this projects
+
+223
+00:08:04,000 --> 00:08:07,000
+or you can have that layer of repository
+
+224
+00:08:07,000 --> 00:08:09,000
+in a very easy and simple way.
+
+225
+00:08:09,000 --> 00:08:12,000
+You'll be giving a short code there, but how do we use it?
+
+226
+00:08:12,000 --> 00:08:14,000
+Let's see that in the next video.
+
diff --git a/16 - Spring Data JPA/003 Creating Table And Inserting Data_en.srt b/16 - Spring Data JPA/003 Creating Table And Inserting Data_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..f1a01eccf9276e9eef98207b588617d6a3073791
--- /dev/null
+++ b/16 - Spring Data JPA/003 Creating Table And Inserting Data_en.srt	
@@ -0,0 +1,1364 @@
+1
+00:00:03,000 --> 00:00:05,000
+-: So let's start our discussion
+
+2
+00:00:05,000 --> 00:00:07,000
+with this Spring JDBC project.
+
+3
+00:00:07,000 --> 00:00:10,000
+Now, as I mentioned before, we have done the same thing,
+
+4
+00:00:10,000 --> 00:00:12,000
+but then we have used JDBC,
+
+5
+00:00:12,000 --> 00:00:15,000
+in which in the repository layer we have
+
+6
+00:00:15,000 --> 00:00:16,000
+to write all these lines of code.
+
+7
+00:00:16,000 --> 00:00:19,000
+Just remember that we have written multiple lines
+
+8
+00:00:19,000 --> 00:00:23,000
+of code here, but also when we wanted to create the table,
+
+9
+00:00:23,000 --> 00:00:25,000
+we have also returned this code.
+
+10
+00:00:25,000 --> 00:00:27,000
+Remember, we have created this schema dot sql?
+
+11
+00:00:27,000 --> 00:00:30,000
+we don't have to do that in the Spring data JDBC project.
+
+12
+00:00:30,000 --> 00:00:32,000
+How, let's do that.
+
+13
+00:00:32,000 --> 00:00:33,000
+So what I will do is let's create a new project
+
+14
+00:00:33,000 --> 00:00:35,000
+and we'll use some of the code from this
+
+15
+00:00:35,000 --> 00:00:36,000
+file to create a project.
+
+16
+00:00:36,000 --> 00:00:39,000
+I will go to Spring initializer
+
+17
+00:00:39,000 --> 00:00:41,000
+and I'm going to create a avenue project.
+
+18
+00:00:41,000 --> 00:00:43,000
+This is the Springboard version.
+
+19
+00:00:43,000 --> 00:00:46,000
+I would say this is com dot tolusko which is my group ID.
+
+20
+00:00:46,000 --> 00:00:48,000
+The project is Spring
+
+21
+00:00:48,000 --> 00:00:52,000
+data JPA example,
+
+22
+00:00:53,000 --> 00:00:56,000
+and I'm going to use Java 21 here.
+
+23
+00:00:56,000 --> 00:00:58,000
+Packaging is Jar.
+
+24
+00:00:58,000 --> 00:00:59,000
+Now what about dependencies?
+
+25
+00:00:59,000 --> 00:01:01,000
+Now this will be tricky.
+
+26
+00:01:01,000 --> 00:01:04,000
+So first of all, we need data JPA.
+
+27
+00:01:04,000 --> 00:01:07,000
+So you have to search for Spring data JPA.
+
+28
+00:01:07,000 --> 00:01:10,000
+So as you can see it says persist data in SQL store
+
+29
+00:01:10,000 --> 00:01:12,000
+with the Java Persistence API
+
+30
+00:01:12,000 --> 00:01:13,000
+using Spring data and hibernate.
+
+31
+00:01:13,000 --> 00:01:17,000
+So behind the scene it uses the hibernate as a tool.
+
+32
+00:01:17,000 --> 00:01:19,000
+So we are using Spring data, JPA,
+
+33
+00:01:19,000 --> 00:01:21,000
+data JPA will use hibernate
+
+34
+00:01:21,000 --> 00:01:25,000
+because JPA is just a specification.
+
+35
+00:01:25,000 --> 00:01:26,000
+Okay?
+
+36
+00:01:26,000 --> 00:01:28,000
+Okay, next we need a database driver.
+
+37
+00:01:28,000 --> 00:01:30,000
+So if you want to use Edge two, you can download,
+
+38
+00:01:30,000 --> 00:01:32,000
+you can get Edge two, but I'm going to use Postgre.
+
+39
+00:01:32,000 --> 00:01:35,000
+So I'm directly going for PostgreSQL, and that's it.
+
+40
+00:01:35,000 --> 00:01:37,000
+These are the two libraries we need
+
+41
+00:01:37,000 --> 00:01:39,000
+and we are not building a web application here.
+
+42
+00:01:39,000 --> 00:01:42,000
+Once we go back to our job application,
+
+43
+00:01:42,000 --> 00:01:45,000
+we are going to integrate with the web as well.
+
+44
+00:01:45,000 --> 00:01:47,000
+But at this point, let's say we are building a
+
+45
+00:01:47,000 --> 00:01:50,000
+console application with the help of Spring data JPA.
+
+46
+00:01:50,000 --> 00:01:51,000
+And click on generate,
+
+47
+00:01:51,000 --> 00:01:54,000
+it'll give me a project which I have to unzip.
+
+48
+00:01:54,000 --> 00:01:57,000
+So got the project, unzip it
+
+49
+00:01:57,000 --> 00:02:01,000
+and let me open the project, open and done.
+
+50
+00:02:01,000 --> 00:02:02,000
+So I want to open this a new window
+
+51
+00:02:02,000 --> 00:02:04,000
+because I want to copy some code from there.
+
+52
+00:02:04,000 --> 00:02:08,000
+So you can see I do have my Spring Data JDBC project here.
+
+53
+00:02:08,000 --> 00:02:09,000
+Click on here.
+
+54
+00:02:09,000 --> 00:02:10,000
+Okay, what are things I'm going to copy
+
+55
+00:02:10,000 --> 00:02:13,000
+from the Spring JDBC?
+
+56
+00:02:13,000 --> 00:02:15,000
+I need the model class because I don't know, topic.
+
+57
+00:02:15,000 --> 00:02:16,000
+Copy it.
+
+58
+00:02:16,000 --> 00:02:18,000
+So I will put that in a model package.
+
+59
+00:02:18,000 --> 00:02:22,000
+So in the src, go to map main Java.
+
+60
+00:02:22,000 --> 00:02:25,000
+And this I'm going to create a model,
+
+61
+00:02:25,000 --> 00:02:28,000
+okay, not a class but a package.
+
+62
+00:02:28,000 --> 00:02:30,000
+New package. I will say model.
+
+63
+00:02:30,000 --> 00:02:34,000
+And let me put the string class here, that's one.
+
+64
+00:02:34,000 --> 00:02:37,000
+Next I need a service.
+
+65
+00:02:37,000 --> 00:02:38,000
+In fact, you know, let's skip service
+
+66
+00:02:38,000 --> 00:02:41,000
+because what service is doing is service is simply
+
+67
+00:02:41,000 --> 00:02:44,000
+taking our data and sending it to Depo.
+
+68
+00:02:44,000 --> 00:02:44,000
+Can we skip that?
+
+69
+00:02:44,000 --> 00:02:47,000
+Yes we can, so let's not use service.
+
+70
+00:02:47,000 --> 00:02:49,000
+And that's it, those are the thing.
+
+71
+00:02:49,000 --> 00:02:51,000
+That's one class we need.
+
+72
+00:02:51,000 --> 00:02:52,000
+I think we'll take one more.
+
+73
+00:02:52,000 --> 00:02:53,000
+In the applicant properties,
+
+74
+00:02:53,000 --> 00:02:56,000
+remember we have done the configuration for Postgres.
+
+75
+00:02:56,000 --> 00:02:58,000
+How do you connect with Postgres?
+
+76
+00:02:58,000 --> 00:02:59,000
+So I will need the same thing.
+
+77
+00:02:59,000 --> 00:03:01,000
+I will just copy that.
+
+78
+00:03:01,000 --> 00:03:04,000
+Go back to my project in the resources application
+
+79
+00:03:04,000 --> 00:03:06,000
+properties, let's page it here.
+
+80
+00:03:06,000 --> 00:03:07,000
+But we have to also make sure
+
+81
+00:03:07,000 --> 00:03:10,000
+that we don't have a table called student in the database.
+
+82
+00:03:10,000 --> 00:03:13,000
+So in this database status quo, I have to make sure
+
+83
+00:03:13,000 --> 00:03:18,000
+that I don't have the student class or student table.
+
+84
+00:03:18,000 --> 00:03:19,000
+So let me open my PG admin,
+
+85
+00:03:19,000 --> 00:03:20,000
+which will take some time to open.
+
+86
+00:03:20,000 --> 00:03:23,000
+Okay, so I got my PG admin open
+
+87
+00:03:23,000 --> 00:03:25,000
+and now I will just enter a password which is
+
+88
+00:03:25,000 --> 00:03:28,000
+zero, zero, zero in this case, four times zero.
+
+89
+00:03:28,000 --> 00:03:33,000
+And if I expand my servers, I do have a Postgre, SQL here.
+
+90
+00:03:33,000 --> 00:03:36,000
+And if you can see we have telusko database
+
+91
+00:03:36,000 --> 00:03:38,000
+and we also have a student class.
+
+92
+00:03:38,000 --> 00:03:41,000
+Let me delete table, sorry, let me delete this.
+
+93
+00:03:41,000 --> 00:03:44,000
+I will just say delete the table and done.
+
+94
+00:03:44,000 --> 00:03:47,000
+Now we don't have any table called student.
+
+95
+00:03:47,000 --> 00:03:49,000
+Okay that's one thing which have to make sure,
+
+96
+00:03:49,000 --> 00:03:53,000
+let me go back to my code, which is this
+
+97
+00:03:53,000 --> 00:03:55,000
+and let's write our code for,
+
+98
+00:03:57,000 --> 00:03:59,000
+okay, let me close this.
+
+99
+00:03:59,000 --> 00:04:00,000
+Spring Data JDBC.
+
+100
+00:04:00,000 --> 00:04:01,000
+Let's only focus on data JPA.
+
+101
+00:04:01,000 --> 00:04:03,000
+Okay, so what we got is we got a student class,
+
+102
+00:04:03,000 --> 00:04:04,000
+which is a very simple class.
+
+103
+00:04:04,000 --> 00:04:06,000
+We got three variables, rule number, name
+
+104
+00:04:06,000 --> 00:04:10,000
+and marks, importing packages, code, nothing, no problem.
+
+105
+00:04:10,000 --> 00:04:12,000
+We got application properties.
+
+106
+00:04:12,000 --> 00:04:14,000
+And now let me go back to the main file.
+
+107
+00:04:14,000 --> 00:04:17,000
+Now this is where basically we have to
+
+108
+00:04:17,000 --> 00:04:19,000
+create the object for student.
+
+109
+00:04:19,000 --> 00:04:21,000
+And the way you can do that, first of all, I just want
+
+110
+00:04:21,000 --> 00:04:23,000
+to get the hold on the application context.
+
+111
+00:04:23,000 --> 00:04:26,000
+I'll say context equal to,
+
+112
+00:04:26,000 --> 00:04:29,000
+and then let me create the object for student.
+
+113
+00:04:29,000 --> 00:04:32,000
+So I'll say student S one equal to
+
+114
+00:04:32,000 --> 00:04:36,000
+context dot getBean
+
+115
+00:04:36,000 --> 00:04:39,000
+I want the object for student dot class
+
+116
+00:04:39,000 --> 00:04:41,000
+and not just one maybe I need three,
+
+117
+00:04:41,000 --> 00:04:42,000
+at least three students.
+
+118
+00:04:42,000 --> 00:04:44,000
+And let's set some data for that.
+
+119
+00:04:44,000 --> 00:04:48,000
+So we'll say S1 dot set roll number 101.
+
+120
+00:04:48,000 --> 00:04:51,000
+Okay, so you can see we got this three student object here
+
+121
+00:04:51,000 --> 00:04:54,000
+and now we just have to store that in database.
+
+122
+00:04:54,000 --> 00:04:56,000
+Now in this project basically we were able
+
+123
+00:04:56,000 --> 00:04:59,000
+to set the properties for the database.
+
+124
+00:04:59,000 --> 00:05:01,000
+You can see we are doing that here
+
+125
+00:05:01,000 --> 00:05:03,000
+and we do have a class student.
+
+126
+00:05:03,000 --> 00:05:07,000
+Right, now I just want to store the data in database.
+
+127
+00:05:07,000 --> 00:05:08,000
+Now that's tricky, right?
+
+128
+00:05:08,000 --> 00:05:09,000
+How we are going to do that?
+
+129
+00:05:09,000 --> 00:05:12,000
+Now basically if you want to store this data in database,
+
+130
+00:05:12,000 --> 00:05:15,000
+we have to make sure that we use JPA.
+
+131
+00:05:15,000 --> 00:05:18,000
+And the way you do that is by creating a repository.
+
+132
+00:05:18,000 --> 00:05:20,000
+So let me create a new class
+
+133
+00:05:20,000 --> 00:05:23,000
+and we'll say this is a student repo
+
+134
+00:05:23,000 --> 00:05:26,000
+and we have done the same thing in JDBC as well.
+
+135
+00:05:26,000 --> 00:05:29,000
+But the difference is here, I'm not going to create a class,
+
+136
+00:05:29,000 --> 00:05:31,000
+let me create the interface, okay?
+
+137
+00:05:31,000 --> 00:05:32,000
+Just be with me and you will see the magic.
+
+138
+00:05:32,000 --> 00:05:36,000
+And here let me extend this particular interface
+
+139
+00:05:36,000 --> 00:05:39,000
+to something called A JPA repository.
+
+140
+00:05:39,000 --> 00:05:41,000
+Now this is something new right.
+
+141
+00:05:41,000 --> 00:05:42,000
+Now this is interface.
+
+142
+00:05:42,000 --> 00:05:44,000
+We got this interface because we have added the library
+
+143
+00:05:44,000 --> 00:05:48,000
+for Spring data JPA and we are getting from there.
+
+144
+00:05:48,000 --> 00:05:50,000
+Now it'll just ask you for two things.
+
+145
+00:05:50,000 --> 00:05:52,000
+First, which class type of you're working with.
+
+146
+00:05:52,000 --> 00:05:54,000
+So I'm working with student type of class
+
+147
+00:05:54,000 --> 00:05:56,000
+and what is a type of primary key?
+
+148
+00:05:56,000 --> 00:05:59,000
+Now table needs a primary key.
+
+149
+00:05:59,000 --> 00:06:01,000
+And if you go back to a student, what do you think?
+
+150
+00:06:01,000 --> 00:06:03,000
+Which one looks more like a primary key?
+
+151
+00:06:03,000 --> 00:06:04,000
+Of course role number, right?
+
+152
+00:06:04,000 --> 00:06:06,000
+And the type of role number is integer.
+
+153
+00:06:06,000 --> 00:06:09,000
+So you have to mention that here, integer.
+
+154
+00:06:09,000 --> 00:06:11,000
+So the type of student, you have to specify that,
+
+155
+00:06:11,000 --> 00:06:14,000
+the type of object you're working with, and that's it.
+
+156
+00:06:14,000 --> 00:06:16,000
+You just need to add this
+
+157
+00:06:16,000 --> 00:06:17,000
+and let's see what happens.
+
+158
+00:06:17,000 --> 00:06:20,000
+We just have to make sure that we add a repository
+
+159
+00:06:20,000 --> 00:06:21,000
+orientation on top of it.
+
+160
+00:06:21,000 --> 00:06:25,000
+Remember when we talked about making a managed bin
+
+161
+00:06:25,000 --> 00:06:28,000
+for a normal class we use component for controllers,
+
+162
+00:06:28,000 --> 00:06:31,000
+we use controller for service clear we use service.
+
+163
+00:06:31,000 --> 00:06:34,000
+And for repository layer we use add repository.
+
+164
+00:06:34,000 --> 00:06:36,000
+Okay, that's it, nothing much.
+
+165
+00:06:36,000 --> 00:06:39,000
+And now we can just go back to application.
+
+166
+00:06:39,000 --> 00:06:43,000
+I need the object of repository as well.
+
+167
+00:06:43,000 --> 00:06:44,000
+So just go back here
+
+168
+00:06:44,000 --> 00:06:49,000
+and say hey, you know, I just want object for repository,
+
+169
+00:06:49,000 --> 00:06:51,000
+which is student repo.
+
+170
+00:06:51,000 --> 00:06:54,000
+repo is equal to, I will get it from the context
+
+171
+00:06:54,000 --> 00:06:56,000
+of the context dot getBean..
+
+172
+00:06:56,000 --> 00:07:01,000
+I want the object for student repo dot class.
+
+173
+00:07:01,000 --> 00:07:03,000
+Okay, so basically I want the reposit,
+
+174
+00:07:03,000 --> 00:07:05,000
+I got the repository object.
+
+175
+00:07:05,000 --> 00:07:08,000
+So we got three students and we got the repository object.
+
+176
+00:07:08,000 --> 00:07:12,000
+Now when I try to say repository dot.
+
+177
+00:07:12,000 --> 00:07:15,000
+Now of course you should not get any op, any method here
+
+178
+00:07:15,000 --> 00:07:18,000
+because in the repository, which is the interface,
+
+179
+00:07:18,000 --> 00:07:20,000
+first of all, we don't even have a class
+
+180
+00:07:20,000 --> 00:07:23,000
+and which we don't have any methods here, right?
+
+181
+00:07:23,000 --> 00:07:25,000
+We have not even declared them.
+
+182
+00:07:25,000 --> 00:07:27,000
+But if you go back to your main,
+
+183
+00:07:27,000 --> 00:07:28,000
+and if you say report dot,
+
+184
+00:07:28,000 --> 00:07:30,000
+you can see we have so many methods.
+
+185
+00:07:30,000 --> 00:07:32,000
+Now this is weird.
+
+186
+00:07:32,000 --> 00:07:34,000
+Now push your eyes from where you're getting these methods.
+
+187
+00:07:34,000 --> 00:07:36,000
+Maybe you're getting these methods from
+
+188
+00:07:37,000 --> 00:07:40,000
+this particular interface JPA repository.
+
+189
+00:07:40,000 --> 00:07:43,000
+And if you click on that, yes, it has a lot of methods.
+
+190
+00:07:43,000 --> 00:07:46,000
+Additionally, this JPA repository also extends from the
+
+191
+00:07:46,000 --> 00:07:48,000
+least credit repository
+
+192
+00:07:48,000 --> 00:07:50,000
+and the least cloud repository extends from
+
+193
+00:07:50,000 --> 00:07:52,000
+the third repository.
+
+194
+00:07:52,000 --> 00:07:54,000
+In the cloud we have all the credit operations.
+
+195
+00:07:54,000 --> 00:07:58,000
+You know, we have delete, save, find, okay.
+
+196
+00:07:58,000 --> 00:07:59,000
+So we got all these methods
+
+197
+00:07:59,000 --> 00:08:03,000
+and that's why if you see when you say dot,
+
+198
+00:08:03,000 --> 00:08:04,000
+we are getting all these methods,
+
+199
+00:08:04,000 --> 00:08:06,000
+but logically it should not work is
+
+200
+00:08:06,000 --> 00:08:09,000
+because we have created the interface, not the class.
+
+201
+00:08:09,000 --> 00:08:11,000
+And we have not specified.
+
+202
+00:08:11,000 --> 00:08:12,000
+When you say save, what it means,
+
+203
+00:08:12,000 --> 00:08:14,000
+when you say delete what it means.
+
+204
+00:08:14,000 --> 00:08:16,000
+But still I will try to do that.
+
+205
+00:08:16,000 --> 00:08:20,000
+Still I will try to say save and S one.
+
+206
+00:08:20,000 --> 00:08:21,000
+I just want to test out
+
+207
+00:08:21,000 --> 00:08:24,000
+and let's see what others you get.
+
+208
+00:08:24,000 --> 00:08:25,000
+And of course I know as I mentioned
+
+209
+00:08:25,000 --> 00:08:27,000
+before, you learn from the others.
+
+210
+00:08:27,000 --> 00:08:30,000
+And when I click this and say run, what worst can happen.
+
+211
+00:08:30,000 --> 00:08:32,000
+It'll give you error, let's see.
+
+212
+00:08:32,000 --> 00:08:34,000
+Yeah, so we were expecting error, we got the error.
+
+213
+00:08:34,000 --> 00:08:38,000
+Maybe it says, hey, you know why you're trying to save.
+
+214
+00:08:38,000 --> 00:08:39,000
+I mean where is the implementation for that?
+
+215
+00:08:39,000 --> 00:08:42,000
+Where is the implementation for your student
+
+216
+00:08:42,000 --> 00:08:43,000
+repo or which is the interface?
+
+217
+00:08:43,000 --> 00:08:45,000
+But it says something else.
+
+218
+00:08:45,000 --> 00:08:49,000
+It says either creating a bean name,
+
+219
+00:08:49,000 --> 00:08:53,000
+a student repo defined in this,
+
+220
+00:08:53,000 --> 00:08:57,000
+declared on JPA not a managed bean of type student.
+
+221
+00:08:57,000 --> 00:09:01,000
+Okay, so student is not a bean, it's a component, okay.
+
+222
+00:09:01,000 --> 00:09:04,000
+Not able to get the solution.
+
+223
+00:09:04,000 --> 00:09:07,000
+But if you see, cause it says something else.
+
+224
+00:09:07,000 --> 00:09:10,000
+But if you say cause it says the same thing, okay/
+
+225
+00:09:10,000 --> 00:09:14,000
+So basically what happens is when you go back to student,
+
+226
+00:09:14,000 --> 00:09:18,000
+we are expecting that the framework should create a table
+
+227
+00:09:18,000 --> 00:09:21,000
+based on this student object, right, Student class.
+
+228
+00:09:21,000 --> 00:09:22,000
+Now to achieve that, we have
+
+229
+00:09:22,000 --> 00:09:26,000
+to use something called at entity.
+
+230
+00:09:26,000 --> 00:09:29,000
+Now what happens is in the database we treat every table
+
+231
+00:09:29,000 --> 00:09:31,000
+as an entity, right.
+
+232
+00:09:31,000 --> 00:09:32,000
+And the way you can achieve that,
+
+233
+00:09:32,000 --> 00:09:35,000
+the way you can create a table from a class is by writing
+
+234
+00:09:35,000 --> 00:09:37,000
+at entity on top of it, okay.
+
+235
+00:09:37,000 --> 00:09:40,000
+That should solve the problem and will it?
+
+236
+00:09:40,000 --> 00:09:41,000
+Let's try.
+
+237
+00:09:41,000 --> 00:09:44,000
+So we just relaunched the application expecting
+
+238
+00:09:44,000 --> 00:09:45,000
+a different error at this time.
+
+239
+00:09:45,000 --> 00:09:47,000
+And yeah, we got the error, but,
+
+240
+00:09:47,000 --> 00:09:49,000
+and you can see we have a different error.
+
+241
+00:09:49,000 --> 00:09:52,000
+Now it's not saying that this, it is not managed,
+
+242
+00:09:52,000 --> 00:09:55,000
+but it says the student has no identifier.
+
+243
+00:09:55,000 --> 00:09:57,000
+Okay, now what do you mean by identifier?
+
+244
+00:09:57,000 --> 00:09:59,000
+Every table needs a primary key
+
+245
+00:09:59,000 --> 00:10:02,000
+and to achieve the primary key, it also mentioned that
+
+246
+00:10:02,000 --> 00:10:04,000
+what you can do, so you can see it says at least
+
+247
+00:10:04,000 --> 00:10:06,000
+one ID should be there.
+
+248
+00:10:06,000 --> 00:10:08,000
+So what I will do is I will make the
+
+249
+00:10:08,000 --> 00:10:09,000
+role number as a primary key.
+
+250
+00:10:09,000 --> 00:10:13,000
+And the way you do that is by using at ID, okay.
+
+251
+00:10:13,000 --> 00:10:14,000
+So you're saying at ID,
+
+252
+00:10:14,000 --> 00:10:18,000
+which means let's make the role number as a primary key.
+
+253
+00:10:18,000 --> 00:10:22,000
+Okay, let's try once again now and let's see what happens.
+
+254
+00:10:22,000 --> 00:10:23,000
+Okay, again, we got the error,
+
+255
+00:10:23,000 --> 00:10:25,000
+but this time we have a different error.
+
+256
+00:10:25,000 --> 00:10:26,000
+You know what it says?
+
+257
+00:10:26,000 --> 00:10:30,000
+It says the student table does not exist.
+
+258
+00:10:30,000 --> 00:10:31,000
+See, that's a different thing, right?
+
+259
+00:10:31,000 --> 00:10:32,000
+It says table not exist.
+
+260
+00:10:32,000 --> 00:10:34,000
+I know we don't have that table,
+
+261
+00:10:34,000 --> 00:10:37,000
+but it is trying to save it.
+
+262
+00:10:37,000 --> 00:10:38,000
+I mean that's weird.
+
+263
+00:10:38,000 --> 00:10:40,000
+We have not done any code
+
+264
+00:10:40,000 --> 00:10:43,000
+to say the SQL queries or something.
+
+265
+00:10:43,000 --> 00:10:46,000
+We are simply using an interface which is,
+
+266
+00:10:46,000 --> 00:10:51,000
+which says student repo and we are saying save here.
+
+267
+00:10:51,000 --> 00:10:52,000
+And it it is trying to save it.
+
+268
+00:10:52,000 --> 00:10:55,000
+What it is not able to find is a table.
+
+269
+00:10:55,000 --> 00:10:56,000
+What if you can create a table?
+
+270
+00:10:56,000 --> 00:10:57,000
+Will it work?
+
+271
+00:10:57,000 --> 00:10:58,000
+Of course, right?
+
+272
+00:10:58,000 --> 00:10:59,000
+But you know what?
+
+273
+00:10:59,000 --> 00:11:02,000
+I am bit lazy.
+
+274
+00:11:02,000 --> 00:11:06,000
+I want my application to create a table.
+
+275
+00:11:06,000 --> 00:11:07,000
+And the way you can do that is
+
+276
+00:11:07,000 --> 00:11:10,000
+by adding some properties here.
+
+277
+00:11:10,000 --> 00:11:12,000
+Now basically Spring is using
+
+278
+00:11:12,000 --> 00:11:14,000
+hibernate behind the scenes, right?
+
+279
+00:11:14,000 --> 00:11:15,000
+And it is searching for the table.
+
+280
+00:11:15,000 --> 00:11:18,000
+What if we say, hey hibernate,
+
+281
+00:11:18,000 --> 00:11:20,000
+you have to create a table for us.
+
+282
+00:11:20,000 --> 00:11:24,000
+And the way you can do that is by saying, Spring dot jpa,
+
+283
+00:11:24,000 --> 00:11:28,000
+dot hyphenate dot ddl hypen auto.
+
+284
+00:11:28,000 --> 00:11:32,000
+Now DDL stands for Data Definition Language.
+
+285
+00:11:32,000 --> 00:11:35,000
+So when you want to create a table, delete that table
+
+286
+00:11:35,000 --> 00:11:36,000
+that comes on the ddl.
+
+287
+00:11:36,000 --> 00:11:40,000
+So we are saying by default you should be creating a table.
+
+288
+00:11:40,000 --> 00:11:43,000
+So when you say it, Spring dot jpa dot hyphenate dot ddl,
+
+289
+00:11:43,000 --> 00:11:45,000
+auto create, it'll create a table.
+
+290
+00:11:45,000 --> 00:11:47,000
+But the problem is it'll create a table every
+
+291
+00:11:47,000 --> 00:11:49,000
+time you load the application.
+
+292
+00:11:49,000 --> 00:11:50,000
+We don't want that, we don't want it
+
+293
+00:11:50,000 --> 00:11:52,000
+to create table every time.
+
+294
+00:11:52,000 --> 00:11:54,000
+So it will drop the old table, create new table.
+
+295
+00:11:54,000 --> 00:11:56,000
+What we can say is we can say update.
+
+296
+00:11:56,000 --> 00:11:59,000
+Update means if you don't have a table, create one.
+
+297
+00:11:59,000 --> 00:12:02,000
+But if you have a table, just update it, that's one.
+
+298
+00:12:02,000 --> 00:12:06,000
+Next I also want to see the query. It fires.
+
+299
+00:12:06,000 --> 00:12:11,000
+That's right, you are not writing any query,
+
+300
+00:12:11,000 --> 00:12:13,000
+but behind the scene hibernate will
+
+301
+00:12:13,000 --> 00:12:15,000
+generate a query for you.
+
+302
+00:12:15,000 --> 00:12:16,000
+See, ultimately your databases
+
+303
+00:12:16,000 --> 00:12:19,000
+on IDBMS runs with SQL Query.
+
+304
+00:12:19,000 --> 00:12:20,000
+So who will get the SQ query?
+
+305
+00:12:20,000 --> 00:12:22,000
+It is your hibernate.
+
+306
+00:12:22,000 --> 00:12:24,000
+And we want to see what query it creates.
+
+307
+00:12:24,000 --> 00:12:28,000
+So I will say Spring dot jpa dot
+
+308
+00:12:28,000 --> 00:12:30,000
+show SQL is equal to true.
+
+309
+00:12:30,000 --> 00:12:31,000
+It'll show the query it was.
+
+310
+00:12:31,000 --> 00:12:33,000
+Now let's see if this works.
+
+311
+00:12:33,000 --> 00:12:37,000
+Let's relaunch the application after making those changes.
+
+312
+00:12:37,000 --> 00:12:41,000
+And if you see the output, oh, can you see that?
+
+313
+00:12:41,000 --> 00:12:44,000
+It says create insert into student.
+
+314
+00:12:44,000 --> 00:12:47,000
+We are inserting data, that's weird.
+
+315
+00:12:47,000 --> 00:12:49,000
+It is also creating a table.
+
+316
+00:12:49,000 --> 00:12:51,000
+So it says create table student
+
+317
+00:12:52,000 --> 00:12:54,000
+with this role number, which is integer.
+
+318
+00:12:54,000 --> 00:12:57,000
+Marks, which is Integer,
+
+319
+00:12:57,000 --> 00:12:58,000
+name, which is wildcard.
+
+320
+00:12:58,000 --> 00:13:00,000
+And that's a primary key.
+
+321
+00:13:01,000 --> 00:13:04,000
+Awesome, I mean we have a primary key which is role number
+
+322
+00:13:04,000 --> 00:13:07,000
+and now let's verify that from the PG admin.
+
+323
+00:13:07,000 --> 00:13:10,000
+Let's go to database and let's refresh my database.
+
+324
+00:13:10,000 --> 00:13:13,000
+I will say refresh.
+
+325
+00:13:13,000 --> 00:13:14,000
+We got the table.
+
+326
+00:13:14,000 --> 00:13:16,000
+Let's see, right leg
+
+327
+00:13:17,000 --> 00:13:19,000
+view all rows
+
+328
+00:13:21,000 --> 00:13:22,000
+and boom.
+
+329
+00:13:23,000 --> 00:13:26,000
+We have not returned any quality in the project
+
+330
+00:13:26,000 --> 00:13:28,000
+and see the project, there is no query.
+
+331
+00:13:28,000 --> 00:13:29,000
+We just created this file
+
+332
+00:13:29,000 --> 00:13:31,000
+where we are saying we got the data.
+
+333
+00:13:31,000 --> 00:13:33,000
+Just say save.
+
+334
+00:13:33,000 --> 00:13:35,000
+We got a student class, which is simple class.
+
+335
+00:13:35,000 --> 00:13:37,000
+We have set some properties here.
+
+336
+00:13:37,000 --> 00:13:39,000
+And repo is just an interface.
+
+337
+00:13:39,000 --> 00:13:40,000
+And that's the beauty.
+
+338
+00:13:40,000 --> 00:13:43,000
+This is your Spring data, JPA.
+
+339
+00:13:43,000 --> 00:13:45,000
+And we have just saved it.
+
+340
+00:13:45,000 --> 00:13:46,000
+But what about fetching data?
+
+341
+00:13:46,000 --> 00:13:48,000
+Let's see that in the next video.
+
diff --git a/16 - Spring Data JPA/003 Source-Code.url b/16 - Spring Data JPA/003 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..862a73e4dbb653caea0fa3270dd902278040f069
--- /dev/null
+++ b/16 - Spring Data JPA/003 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/10%20Spring%20DataJPA/9.3%20Creating%20Table%20And%20Inserting%20Data/spring-data-jpa-ex
\ No newline at end of file
diff --git a/16 - Spring Data JPA/004 Source-Code.url b/16 - Spring Data JPA/004 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..5a60faa99f4bc9c50f303109a449da9496a73663
--- /dev/null
+++ b/16 - Spring Data JPA/004 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/36d783117044564847940ba5046b35cc59f55346/10%20Spring%20DataJPA/9.4%20Findall/spring-data-jpa-ex
\ No newline at end of file
diff --git a/16 - Spring Data JPA/005 Source-Code.url b/16 - Spring Data JPA/005 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..4bdf2d99cb21eb274ae1ff704dd5ac349471bf17
--- /dev/null
+++ b/16 - Spring Data JPA/005 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/fa914a08f0f89f7d8a8a16362d928b0bdb45d337/10%20Spring%20DataJPA/9.5%20Findbyid/spring-data-jpa-ex3
\ No newline at end of file
diff --git a/16 - Spring Data JPA/005 findById_en.srt b/16 - Spring Data JPA/005 findById_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..9f639a14b9c01f04d0f26a9aca16abbc9b129e97
--- /dev/null
+++ b/16 - Spring Data JPA/005 findById_en.srt	
@@ -0,0 +1,352 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: So basically, we were able to get the data, right?
+
+3
+00:00:05,000 --> 00:00:07,000
+So when you say find all,
+
+4
+00:00:07,000 --> 00:00:09,000
+basically you are receiving everything,
+
+5
+00:00:09,000 --> 00:00:13,000
+but now, we want to fetch, let's say, one element, not all.
+
+6
+00:00:13,000 --> 00:00:14,000
+Now what you want to fetch?
+
+7
+00:00:14,000 --> 00:00:16,000
+So let's go back to our PG admin.
+
+8
+00:00:16,000 --> 00:00:17,000
+So we got our PG admin.
+
+9
+00:00:17,000 --> 00:00:20,000
+If I go to PostgreSQL,
+
+10
+00:00:20,000 --> 00:00:22,000
+and if you go back to student
+
+11
+00:00:22,000 --> 00:00:24,000
+just to see what data we have,
+
+12
+00:00:24,000 --> 00:00:27,000
+and this is the data, right, which is, yeah.
+
+13
+00:00:27,000 --> 00:00:30,000
+So we got 101, Navin, 102, Kiran, 103, Harsh.
+
+14
+00:00:30,000 --> 00:00:32,000
+So we got all this data.
+
+15
+00:00:32,000 --> 00:00:35,000
+I want to fetch one particular row here.
+
+16
+00:00:35,000 --> 00:00:37,000
+Let's say I want to fetch 103.
+
+17
+00:00:37,000 --> 00:00:40,000
+So what you can do is you can go back to your code
+
+18
+00:00:40,000 --> 00:00:44,000
+and instead of saying findAll, we'll not do that now,
+
+19
+00:00:44,000 --> 00:00:45,000
+we can find different method.
+
+20
+00:00:45,000 --> 00:00:47,000
+So if you say .repo,
+
+21
+00:00:47,000 --> 00:00:50,000
+we have different methods apart from find all.
+
+22
+00:00:50,000 --> 00:00:52,000
+If you go down, there's also count,
+
+23
+00:00:52,000 --> 00:00:55,000
+which will give you the number of rows you have,
+
+24
+00:00:55,000 --> 00:01:00,000
+but we want to go with this, which is called find by ID.
+
+25
+00:01:00,000 --> 00:01:02,000
+Now find by ID is a special method,
+
+26
+00:01:02,000 --> 00:01:06,000
+which will give you a row based on the primary key.
+
+27
+00:01:06,000 --> 00:01:09,000
+Now what value you want to go for, let's say 103.
+
+28
+00:01:09,000 --> 00:01:11,000
+Of course, you can ask this value from the user,
+
+29
+00:01:11,000 --> 00:01:13,000
+but let's try 103 here
+
+30
+00:01:13,000 --> 00:01:15,000
+And now with this, if you run this code,
+
+31
+00:01:15,000 --> 00:01:18,000
+so you can see we got it is filing a select query,
+
+32
+00:01:18,000 --> 00:01:22,000
+which is select, roll number, marks, name from student
+
+33
+00:01:22,000 --> 00:01:24,000
+where the roll number is equal to...
+
+34
+00:01:24,000 --> 00:01:27,000
+So whatever value you mentioned, it will search for that.
+
+35
+00:01:27,000 --> 00:01:28,000
+Now basically why roll number
+
+36
+00:01:28,000 --> 00:01:30,000
+is because roll number is our primary key, right?
+
+37
+00:01:30,000 --> 00:01:33,000
+And we got the data, which is this.
+
+38
+00:01:33,000 --> 00:01:36,000
+But also if you see, it says optional.
+
+39
+00:01:36,000 --> 00:01:37,000
+Now why it is optional?
+
+40
+00:01:37,000 --> 00:01:40,000
+So what I will do is I will try to say repo.findById,
+
+41
+00:01:43,000 --> 00:01:46,000
+and if you see the written type of this,
+
+42
+00:01:46,000 --> 00:01:48,000
+this returns an optional.
+
+43
+00:01:48,000 --> 00:01:51,000
+Now, to secure yourself from null point exception,
+
+44
+00:01:51,000 --> 00:01:54,000
+because that's a very common error, right,
+
+45
+00:01:54,000 --> 00:01:55,000
+what if you are searching for something?
+
+46
+00:01:55,000 --> 00:01:57,000
+Let's say you're searching for 104,
+
+47
+00:01:57,000 --> 00:01:58,000
+and we don't have this data,
+
+48
+00:01:58,000 --> 00:02:00,000
+so it will return you null, right?
+
+49
+00:02:00,000 --> 00:02:03,000
+So if you're trying to accept that into a student object,
+
+50
+00:02:03,000 --> 00:02:07,000
+so if I say Student s is equal to,
+
+51
+00:02:07,000 --> 00:02:09,000
+you can see it will give you error
+
+52
+00:02:09,000 --> 00:02:10,000
+because you're not getting student object,
+
+53
+00:02:10,000 --> 00:02:12,000
+but you're getting an optional object.
+
+54
+00:02:12,000 --> 00:02:15,000
+So basically you have to convert this
+
+55
+00:02:15,000 --> 00:02:18,000
+from student to optional student.
+
+56
+00:02:18,000 --> 00:02:20,000
+As I mentioned, optional means it'll have a value
+
+57
+00:02:20,000 --> 00:02:23,000
+or it can handle null value basically.
+
+58
+00:02:23,000 --> 00:02:28,000
+So instead of printing directly this object like this,
+
+59
+00:02:28,000 --> 00:02:30,000
+we should say get the value,
+
+60
+00:02:30,000 --> 00:02:32,000
+but what if the value is not there?
+
+61
+00:02:32,000 --> 00:02:35,000
+So you can say s, or you can say orElse.
+
+62
+00:02:35,000 --> 00:02:36,000
+If the data is not there,
+
+63
+00:02:36,000 --> 00:02:39,000
+maybe I want to return a blank student object,
+
+64
+00:02:39,000 --> 00:02:40,000
+something like this.
+
+65
+00:02:40,000 --> 00:02:42,000
+So now if you run this code, it will give you the value.
+
+66
+00:02:42,000 --> 00:02:44,000
+Otherwise, it will give you a blank object.
+
+67
+00:02:44,000 --> 00:02:46,000
+Let's see what happens.
+
+68
+00:02:46,000 --> 00:02:48,000
+So you can see we got a blank object here,
+
+69
+00:02:48,000 --> 00:02:50,000
+basically an object with default values.
+
+70
+00:02:50,000 --> 00:02:53,000
+And this is not specific to Spring or Hypernet.
+
+71
+00:02:53,000 --> 00:02:55,000
+This is a Java 8 concept,
+
+72
+00:02:55,000 --> 00:02:58,000
+which I mean, it was introduced in Java 8.
+
+73
+00:02:58,000 --> 00:03:00,000
+So basically if you are getting data from somewhere,
+
+74
+00:03:00,000 --> 00:03:02,000
+the data might not be available,
+
+75
+00:03:02,000 --> 00:03:04,000
+so it's better to use optional.
+
+76
+00:03:04,000 --> 00:03:05,000
+But what if you have data?
+
+77
+00:03:05,000 --> 00:03:07,000
+In that case, it will give you the real data.
+
+78
+00:03:07,000 --> 00:03:08,000
+So run this.
+
+79
+00:03:08,000 --> 00:03:10,000
+So you can see we got the data.
+
+80
+00:03:10,000 --> 00:03:11,000
+This time it's not optional.
+
+81
+00:03:11,000 --> 00:03:14,000
+We actually got the data.
+
+82
+00:03:14,000 --> 00:03:16,000
+Okay, so that's how we can solve this.
+
+83
+00:03:16,000 --> 00:03:18,000
+So basically we're able to find with the primary key,
+
+84
+00:03:18,000 --> 00:03:20,000
+but what if you want to find
+
+85
+00:03:20,000 --> 00:03:21,000
+with a data which is not primary?
+
+86
+00:03:21,000 --> 00:03:22,000
+Maybe you want to search by name.
+
+87
+00:03:22,000 --> 00:03:25,000
+Maybe you want to search by marks.
+
+88
+00:03:25,000 --> 00:03:27,000
+Let's see how to do that in the next video.
+
diff --git a/16 - Spring Data JPA/006 JPQL Query_en.srt b/16 - Spring Data JPA/006 JPQL Query_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..ae2c3dce8b62d66fecb875fc36357e062fe1b347
--- /dev/null
+++ b/16 - Spring Data JPA/006 JPQL Query_en.srt	
@@ -0,0 +1,904 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle music)
+
+2
+00:00:03,000 --> 00:00:06,000
+-: Okay, so now, let's search by name.
+
+3
+00:00:06,000 --> 00:00:08,000
+Okay, so, how do we do that?
+
+4
+00:00:08,000 --> 00:00:10,000
+Of course, we have to do something else.
+
+5
+00:00:10,000 --> 00:00:11,000
+We'll delete this content,
+
+6
+00:00:11,000 --> 00:00:13,000
+and I want to get the data, right?
+
+7
+00:00:13,000 --> 00:00:14,000
+So I will say repo.,
+
+8
+00:00:14,000 --> 00:00:16,000
+and of course, you can get the data by primary key.
+
+9
+00:00:16,000 --> 00:00:18,000
+You have this method, find by ID,
+
+10
+00:00:18,000 --> 00:00:20,000
+but what if you want to search by name?
+
+11
+00:00:20,000 --> 00:00:22,000
+So it should have a method, right?
+
+12
+00:00:22,000 --> 00:00:23,000
+So it should say findByName.
+
+13
+00:00:25,000 --> 00:00:28,000
+Okay, unfortunately, if you can see, we don't have it.
+
+14
+00:00:28,000 --> 00:00:31,000
+Let's say I want to search for Navin in this case.
+
+15
+00:00:31,000 --> 00:00:33,000
+So when you're searching for Navin,
+
+16
+00:00:33,000 --> 00:00:35,000
+and we are expecting that this should work,
+
+17
+00:00:35,000 --> 00:00:36,000
+but it's not working.
+
+18
+00:00:36,000 --> 00:00:38,000
+You can see find by name is not working.
+
+19
+00:00:38,000 --> 00:00:39,000
+You know why?
+
+20
+00:00:39,000 --> 00:00:43,000
+Because in the student repo, we don't have this method,
+
+21
+00:00:43,000 --> 00:00:45,000
+not the one in the JPA repository.
+
+22
+00:00:45,000 --> 00:00:47,000
+And how can you expect that?
+
+23
+00:00:47,000 --> 00:00:51,000
+Because every example will have a different class,
+
+24
+00:00:51,000 --> 00:00:52,000
+different names of the variable.
+
+25
+00:00:52,000 --> 00:00:53,000
+Here we have name.
+
+26
+00:00:53,000 --> 00:00:54,000
+That's why we are searching for name,
+
+27
+00:00:54,000 --> 00:00:56,000
+but what if you have a different variable?
+
+28
+00:00:56,000 --> 00:00:58,000
+Let's say a person name, a student name.
+
+29
+00:00:58,000 --> 00:01:00,000
+How can you expect that those method
+
+30
+00:01:00,000 --> 00:01:02,000
+will be available, right?
+
+31
+00:01:02,000 --> 00:01:05,000
+So, how do I make it work?
+
+32
+00:01:05,000 --> 00:01:07,000
+In that case, maybe one of the solution
+
+33
+00:01:07,000 --> 00:01:08,000
+is to write a query, okay?
+
+34
+00:01:08,000 --> 00:01:10,000
+So, let's try to write a query.
+
+35
+00:01:10,000 --> 00:01:13,000
+So let me create a method, which is string.
+
+36
+00:01:13,000 --> 00:01:15,000
+And okay, because it will...
+
+37
+00:01:15,000 --> 00:01:15,000
+Okay, what it'll return,
+
+38
+00:01:15,000 --> 00:01:17,000
+it'll return the list of student.
+
+39
+00:01:17,000 --> 00:01:19,000
+Now, why it will return a list of student
+
+40
+00:01:19,000 --> 00:01:22,000
+is because multiple people or multiple rows
+
+41
+00:01:22,000 --> 00:01:25,000
+can have the same name, of course, right?
+
+42
+00:01:25,000 --> 00:01:27,000
+Navin is not the unique name in the world.
+
+43
+00:01:27,000 --> 00:01:29,000
+Let me import the package.
+
+44
+00:01:30,000 --> 00:01:34,000
+And then you can specify the method name,
+
+45
+00:01:34,000 --> 00:01:37,000
+and I will say findBy Name, okay?
+
+46
+00:01:37,000 --> 00:01:40,000
+And then, you can mention the student name,
+
+47
+00:01:41,000 --> 00:01:43,000
+which is string name.
+
+48
+00:01:43,000 --> 00:01:44,000
+I mean, whatever data you're passing.
+
+49
+00:01:44,000 --> 00:01:46,000
+But then will this work?
+
+50
+00:01:46,000 --> 00:01:49,000
+For this, we have to basically write a query, okay?
+
+51
+00:01:50,000 --> 00:01:51,000
+Now how do you write a query?
+
+52
+00:01:51,000 --> 00:01:52,000
+It's very simple.
+
+53
+00:01:52,000 --> 00:01:53,000
+If you want to specify
+
+54
+00:01:53,000 --> 00:01:55,000
+whenever someone calls this method,
+
+55
+00:01:55,000 --> 00:01:58,000
+which is find by name, execute a query.
+
+56
+00:01:58,000 --> 00:02:02,000
+So we can use a query annotation here, okay?
+
+57
+00:02:02,000 --> 00:02:04,000
+And we can specify the query.
+
+58
+00:02:04,000 --> 00:02:06,000
+Now, not a normal query like SQL query.
+
+59
+00:02:06,000 --> 00:02:08,000
+Since we are using JPA,
+
+60
+00:02:08,000 --> 00:02:10,000
+we have a special type of query,
+
+61
+00:02:10,000 --> 00:02:13,000
+which is called a JPQL,
+
+62
+00:02:13,000 --> 00:02:15,000
+which is your JPA query language.
+
+63
+00:02:15,000 --> 00:02:17,000
+So basically we have to use JPQL here,
+
+64
+00:02:17,000 --> 00:02:21,000
+and how it looks like, it looks like a SQL query.
+
+65
+00:02:21,000 --> 00:02:22,000
+The differences is in SQL,
+
+66
+00:02:22,000 --> 00:02:24,000
+we use table names, column names.
+
+67
+00:02:24,000 --> 00:02:29,000
+In JPQL, we use the class name and the property names.
+
+68
+00:02:29,000 --> 00:02:31,000
+Example, if I want to say select,
+
+69
+00:02:31,000 --> 00:02:32,000
+I want to fetch everything,
+
+70
+00:02:32,000 --> 00:02:34,000
+or maybe I want to fetch a student, right?
+
+71
+00:02:34,000 --> 00:02:38,000
+So I would say select student, which student in S,
+
+72
+00:02:38,000 --> 00:02:41,000
+from, and then you have to mention the class name,
+
+73
+00:02:41,000 --> 00:02:41,000
+not the table name.
+
+74
+00:02:41,000 --> 00:02:43,000
+So Student, capital, S capital.
+
+75
+00:02:43,000 --> 00:02:45,000
+And then you have to say where,
+
+76
+00:02:45,000 --> 00:02:47,000
+and then you have to say s.name, okay?
+
+77
+00:02:47,000 --> 00:02:49,000
+So basically we are fetching a student,
+
+78
+00:02:49,000 --> 00:02:52,000
+so we have to say s.name, which is a variable.
+
+79
+00:02:52,000 --> 00:02:53,000
+Okay, treat this as an object,
+
+80
+00:02:53,000 --> 00:02:55,000
+and this is a variable, equal to,
+
+81
+00:02:55,000 --> 00:02:58,000
+and then you have to put a question mark, right?
+
+82
+00:02:58,000 --> 00:03:01,000
+Now this question mark will be replaced by name.
+
+83
+00:03:01,000 --> 00:03:02,000
+It's that simple.
+
+84
+00:03:02,000 --> 00:03:04,000
+But then you might be having multiple question marks, right?
+
+85
+00:03:04,000 --> 00:03:06,000
+So let's say if you have a complex query
+
+86
+00:03:06,000 --> 00:03:09,000
+and then you have two or three question marks,
+
+87
+00:03:09,000 --> 00:03:10,000
+how do you differentiate
+
+88
+00:03:10,000 --> 00:03:11,000
+that this particular question mark
+
+89
+00:03:11,000 --> 00:03:12,000
+is for the first variable,
+
+90
+00:03:12,000 --> 00:03:14,000
+the other question mark is with the second variable?
+
+91
+00:03:14,000 --> 00:03:17,000
+In that case, you have to also give a number here,
+
+92
+00:03:17,000 --> 00:03:17,000
+which is one.
+
+93
+00:03:17,000 --> 00:03:19,000
+So what we are saying is this question mark
+
+94
+00:03:19,000 --> 00:03:23,000
+will be replaced by the first parameter, which is this.
+
+95
+00:03:23,000 --> 00:03:25,000
+If you're passing in other parameters,
+
+96
+00:03:25,000 --> 00:03:27,000
+it will be for the second question mark
+
+97
+00:03:27,000 --> 00:03:28,000
+if you specify that.
+
+98
+00:03:28,000 --> 00:03:30,000
+But now let's see if it works.
+
+99
+00:03:30,000 --> 00:03:32,000
+Let's rerun this application,
+
+100
+00:03:32,000 --> 00:03:35,000
+and you can see there's no problem here.
+
+101
+00:03:35,000 --> 00:03:36,000
+The error gone.
+
+102
+00:03:36,000 --> 00:03:37,000
+But will this work?
+
+103
+00:03:37,000 --> 00:03:38,000
+Let's try.
+
+104
+00:03:38,000 --> 00:03:40,000
+So, we are running the code,
+
+105
+00:03:40,000 --> 00:03:43,000
+And, okay, we got an error.
+
+106
+00:03:43,000 --> 00:03:44,000
+Let's all this.
+
+107
+00:03:44,000 --> 00:03:45,000
+Oh, I made one mistake.
+
+108
+00:03:45,000 --> 00:03:47,000
+So basically we have to give an alias.
+
+109
+00:03:47,000 --> 00:03:51,000
+So we have to say Student s, which is the alias for this,
+
+110
+00:03:51,000 --> 00:03:53,000
+and then that's what you're fetching.
+
+111
+00:03:53,000 --> 00:03:53,000
+My bad.
+
+112
+00:03:53,000 --> 00:03:55,000
+And now this should work.
+
+113
+00:03:55,000 --> 00:03:57,000
+Okay, so you can see it is firing a query here.
+
+114
+00:03:57,000 --> 00:03:59,000
+Okay, we got the data, but we forgot to do one thing.
+
+115
+00:03:59,000 --> 00:04:02,000
+We are not printing it, okay?
+
+116
+00:04:02,000 --> 00:04:04,000
+Now this is a list, so I can simply print it out,
+
+117
+00:04:04,000 --> 00:04:05,000
+the entire list.
+
+118
+00:04:05,000 --> 00:04:07,000
+It is not fetching one record.
+
+119
+00:04:07,000 --> 00:04:08,000
+It's fetching multiple.
+
+120
+00:04:08,000 --> 00:04:09,000
+And you can see we got the record.
+
+121
+00:04:09,000 --> 00:04:11,000
+And you can see it is printing in the square bracket.
+
+122
+00:04:11,000 --> 00:04:13,000
+That means it's a list here or collection.
+
+123
+00:04:13,000 --> 00:04:15,000
+So basically, we are printing the name,
+
+124
+00:04:15,000 --> 00:04:17,000
+a roll number, name, and marks, right?
+
+125
+00:04:17,000 --> 00:04:19,000
+So basically if you want to have a method,
+
+126
+00:04:19,000 --> 00:04:22,000
+which might not be there by default in the JP repository,
+
+127
+00:04:22,000 --> 00:04:27,000
+in that case, we have to specify a query annotation, okay?
+
+128
+00:04:28,000 --> 00:04:32,000
+But let me tell you magic here, or let me show you a magic.
+
+129
+00:04:32,000 --> 00:04:35,000
+Basically, even if you remove this, it works.
+
+130
+00:04:35,000 --> 00:04:36,000
+Okay, let me show you.
+
+131
+00:04:36,000 --> 00:04:38,000
+So let me remove the entire query.
+
+132
+00:04:38,000 --> 00:04:40,000
+Okay, there's no query now, and let me relaunch it.
+
+133
+00:04:40,000 --> 00:04:41,000
+And let's see what happens.
+
+134
+00:04:41,000 --> 00:04:42,000
+And it works.
+
+135
+00:04:42,000 --> 00:04:44,000
+I mean, I wasted you a few minutes
+
+136
+00:04:44,000 --> 00:04:45,000
+just to talk about something
+
+137
+00:04:45,000 --> 00:04:47,000
+where you already have a method there, okay?
+
+138
+00:04:47,000 --> 00:04:49,000
+I mean, it is working without it.
+
+139
+00:04:49,000 --> 00:04:51,000
+See, the thing is, it works,
+
+140
+00:04:51,000 --> 00:04:54,000
+but it will not work for everything, okay?
+
+141
+00:04:54,000 --> 00:04:56,000
+So what JPA does is JPA uses something
+
+142
+00:04:56,000 --> 00:04:59,000
+called a domain-specific language, which is DSL.
+
+143
+00:04:59,000 --> 00:05:03,000
+So using this DSL, it creates certain methods
+
+144
+00:05:03,000 --> 00:05:04,000
+for you behind the scene.
+
+145
+00:05:04,000 --> 00:05:07,000
+So it will look for the column name or the property names.
+
+146
+00:05:07,000 --> 00:05:10,000
+We have a property called name via property called marks.
+
+147
+00:05:10,000 --> 00:05:13,000
+So it will create certain queries behind the scene for you,
+
+148
+00:05:13,000 --> 00:05:15,000
+and you can use those names directly.
+
+149
+00:05:15,000 --> 00:05:17,000
+You can use those methods directly.
+
+150
+00:05:17,000 --> 00:05:19,000
+But, yes, if you specify something else here,
+
+151
+00:05:19,000 --> 00:05:22,000
+something like this, findBySName, then it will not work
+
+152
+00:05:22,000 --> 00:05:25,000
+because JPA has no idea that what is his name here?
+
+153
+00:05:25,000 --> 00:05:27,000
+But JPA knows what is name.
+
+154
+00:05:27,000 --> 00:05:29,000
+But in case if you want something extra,
+
+155
+00:05:29,000 --> 00:05:31,000
+which is not provided by JPA,
+
+156
+00:05:31,000 --> 00:05:33,000
+in that case, you have to write the query notation.
+
+157
+00:05:33,000 --> 00:05:35,000
+So you have to specify the query by yourself.
+
+158
+00:05:35,000 --> 00:05:39,000
+But most of the time, JPA will have the methods for you.
+
+159
+00:05:39,000 --> 00:05:41,000
+Example, we got find by name.
+
+160
+00:05:41,000 --> 00:05:43,000
+What about you want to find by marks?
+
+161
+00:05:43,000 --> 00:05:44,000
+We can do that.
+
+162
+00:05:44,000 --> 00:05:45,000
+So I can say the same thing.
+
+163
+00:05:45,000 --> 00:05:49,000
+I can just copy paste this, and I can say findByMarks,
+
+164
+00:05:49,000 --> 00:05:52,000
+but you have to make sure that the method theme starts
+
+165
+00:05:52,000 --> 00:05:55,000
+with findBy because that's the standard.
+
+166
+00:05:55,000 --> 00:05:57,000
+And then you have to mention the variable name,
+
+167
+00:05:57,000 --> 00:05:59,000
+which is name, the marks, or you can also specify ID,
+
+168
+00:05:59,000 --> 00:06:00,000
+which is the primary key.
+
+169
+00:06:00,000 --> 00:06:01,000
+So you can specify the whole number.
+
+170
+00:06:01,000 --> 00:06:03,000
+You can specify ID.
+
+171
+00:06:03,000 --> 00:06:05,000
+And here, instead of saying string,
+
+172
+00:06:05,000 --> 00:06:07,000
+you have to say int marks, okay?
+
+173
+00:06:07,000 --> 00:06:08,000
+Now this should work
+
+174
+00:06:08,000 --> 00:06:10,000
+provided you change something here.
+
+175
+00:06:10,000 --> 00:06:11,000
+So instead of saying findByName,
+
+176
+00:06:12,000 --> 00:06:14,000
+I would say findByMarks,
+
+177
+00:06:16,000 --> 00:06:17,000
+but what should be the marks?
+
+178
+00:06:17,000 --> 00:06:19,000
+Let me just check my database.
+
+179
+00:06:19,000 --> 00:06:20,000
+And let's say I want to search for 80.
+
+180
+00:06:20,000 --> 00:06:22,000
+So I will say 80 here.
+
+181
+00:06:22,000 --> 00:06:24,000
+And again, this will give you a list of values,
+
+182
+00:06:24,000 --> 00:06:27,000
+not just one because multiple children
+
+183
+00:06:27,000 --> 00:06:29,000
+can have the same marks.
+
+184
+00:06:29,000 --> 00:06:31,000
+And if you see, we got the record.
+
+185
+00:06:31,000 --> 00:06:32,000
+Okay, that's how it works.
+
+186
+00:06:32,000 --> 00:06:35,000
+But what if I want to do something extra?
+
+187
+00:06:35,000 --> 00:06:40,000
+Let's say, I want to say find by marks greater than 70,
+
+188
+00:06:40,000 --> 00:06:42,000
+something like this, or 75.
+
+189
+00:06:42,000 --> 00:06:45,000
+So again, you should not be judging students
+
+190
+00:06:45,000 --> 00:06:45,000
+based on their marks.
+
+191
+00:06:45,000 --> 00:06:50,000
+That's wrong, but we can do it for the example.
+
+192
+00:06:50,000 --> 00:06:51,000
+Okay, so let's say I want to search students
+
+193
+00:06:51,000 --> 00:06:55,000
+based on their marks greater than 70, 75,
+
+194
+00:06:55,000 --> 00:06:56,000
+or maybe let's say 72.
+
+195
+00:06:56,000 --> 00:06:58,000
+So let's greater than 72.
+
+196
+00:06:58,000 --> 00:07:00,000
+In that case, what should be done?
+
+197
+00:07:00,000 --> 00:07:02,000
+So let's go back to our repo.
+
+198
+00:07:02,000 --> 00:07:05,000
+Instead of saying Marks, I can say MarksGreaterThan,
+
+199
+00:07:06,000 --> 00:07:08,000
+and then you can specify the marks, okay?
+
+200
+00:07:08,000 --> 00:07:11,000
+So, certain things are there like greater than, less than,
+
+201
+00:07:11,000 --> 00:07:12,000
+everything which comes in the query, right?
+
+202
+00:07:12,000 --> 00:07:15,000
+So we have greater than, less than, equals,
+
+203
+00:07:15,000 --> 00:07:16,000
+so we can use those methods.
+
+204
+00:07:16,000 --> 00:07:18,000
+And now, let's switch it from here.
+
+205
+00:07:18,000 --> 00:07:20,000
+So instead of saying get by marks,
+
+206
+00:07:20,000 --> 00:07:24,000
+I will say get by marks greater than, and let's say 72.
+
+207
+00:07:24,000 --> 00:07:27,000
+And we have two students who has marks greater than 72.
+
+208
+00:07:27,000 --> 00:07:30,000
+Let's run and see if that works.
+
+209
+00:07:30,000 --> 00:07:32,000
+And you can see we got two records now,
+
+210
+00:07:32,000 --> 00:07:36,000
+one, Navin, which is 75, and Kiran, which is 80.
+
+211
+00:07:36,000 --> 00:07:37,000
+And that's how it works.
+
+212
+00:07:37,000 --> 00:07:38,000
+So basically, we have talked about something
+
+213
+00:07:38,000 --> 00:07:40,000
+called a query DSL.
+
+214
+00:07:40,000 --> 00:07:43,000
+So basically, DSL, domain-specific language,
+
+215
+00:07:43,000 --> 00:07:46,000
+JPA will have certain queries for you pre created,
+
+216
+00:07:46,000 --> 00:07:48,000
+already created, which you can use
+
+217
+00:07:48,000 --> 00:07:49,000
+with the help of method names,
+
+218
+00:07:49,000 --> 00:07:52,000
+but you have to make sure that it is find by,
+
+219
+00:07:52,000 --> 00:07:53,000
+and then you can mention the variable name
+
+220
+00:07:53,000 --> 00:07:56,000
+and whatever operators you want to use,
+
+221
+00:07:56,000 --> 00:07:58,000
+greater than, less than, or something like that.
+
+222
+00:07:58,000 --> 00:07:59,000
+So yeah, that's it from this video
+
+223
+00:07:59,000 --> 00:08:00,000
+where we talked about how do you find,
+
+224
+00:08:00,000 --> 00:08:03,000
+but then we have two more operations, delete and update.
+
+225
+00:08:03,000 --> 00:08:04,000
+Will that work?
+
+226
+00:08:04,000 --> 00:08:05,000
+Let's try in the next video.
+
diff --git a/16 - Spring Data JPA/006 Source-Code.url b/16 - Spring Data JPA/006 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..1494b0264e3e6b54c7cd1622774ac65b3e6fed55
--- /dev/null
+++ b/16 - Spring Data JPA/006 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/fa914a08f0f89f7d8a8a16362d928b0bdb45d337/10%20Spring%20DataJPA/9.6%20Query%20Dsl/spring-data-jpa-ex
\ No newline at end of file
diff --git a/16 - Spring Data JPA/007 Source-Code.url b/16 - Spring Data JPA/007 Source-Code.url
new file mode 100644
index 0000000000000000000000000000000000000000..5fc09cb6128908f64ecf17fb0ceed6a6bf276483
--- /dev/null
+++ b/16 - Spring Data JPA/007 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/fa914a08f0f89f7d8a8a16362d928b0bdb45d337/10%20Spring%20DataJPA/9.7%20Update%20And%20Delete/spring-data-jpa-ex
\ No newline at end of file
diff --git a/16 - Spring Data JPA/007 Update and Delete_en.srt b/16 - Spring Data JPA/007 Update and Delete_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..6b4251c1274e01009a6fcab47fcd226945414bcd
--- /dev/null
+++ b/16 - Spring Data JPA/007 Update and Delete_en.srt	
@@ -0,0 +1,304 @@
+1
+00:00:00,000 --> 00:00:03,000
+(gentle intro music)
+
+2
+00:00:03,000 --> 00:00:05,000
+-: Now let's work with Update and Delete.
+
+3
+00:00:05,000 --> 00:00:06,000
+So what I will do is,
+
+4
+00:00:06,000 --> 00:00:09,000
+I don't want this student printing.
+
+5
+00:00:09,000 --> 00:00:10,000
+I do hold...
+
+6
+00:00:10,000 --> 00:00:11,000
+I do have all these things.
+
+7
+00:00:11,000 --> 00:00:13,000
+Let's say I want to update a student.
+
+8
+00:00:13,000 --> 00:00:14,000
+So let's say
+
+9
+00:00:14,000 --> 00:00:15,000
+I want to update S3.
+
+10
+00:00:15,000 --> 00:00:16,000
+Okay?
+
+11
+00:00:16,000 --> 00:00:17,000
+So what you can do is,
+
+12
+00:00:17,000 --> 00:00:19,000
+you can simply use repo dot
+
+13
+00:00:19,000 --> 00:00:21,000
+and you'll find a method to update.
+
+14
+00:00:21,000 --> 00:00:23,000
+Now, there is no actual update here.
+
+15
+00:00:23,000 --> 00:00:28,000
+If you see, if you scroll down and down and down.
+
+16
+00:00:28,000 --> 00:00:29,000
+So this we don't have update,
+
+17
+00:00:29,000 --> 00:00:32,000
+but you can use save to update also.
+
+18
+00:00:32,000 --> 00:00:34,000
+So let me update with the same object.
+
+19
+00:00:34,000 --> 00:00:37,000
+Okay, so let's say I want to update Kiran.
+
+20
+00:00:37,000 --> 00:00:39,000
+So I'll just uncommend this, set the values,
+
+21
+00:00:39,000 --> 00:00:40,000
+and then I will simply change certain values.
+
+22
+00:00:40,000 --> 00:00:41,000
+We already have this data
+
+23
+00:00:41,000 --> 00:00:46,000
+and I want to change the marks to let's say 65.
+
+24
+00:00:48,000 --> 00:00:49,000
+Okay, so I'm changing only one field,
+
+25
+00:00:49,000 --> 00:00:51,000
+but will it update?
+
+26
+00:00:51,000 --> 00:00:53,000
+Let's try. So I'll just rerun this
+
+27
+00:00:53,000 --> 00:00:54,000
+and just to
+
+28
+00:00:54,000 --> 00:00:57,000
+make sure that you know our database, we have
+
+29
+00:00:57,000 --> 00:00:58,000
+80 and let's rerun.
+
+30
+00:00:58,000 --> 00:00:59,000
+Okay, it says something expected. Of course,
+
+31
+00:00:59,000 --> 00:01:02,000
+of course.
+
+32
+00:01:02,000 --> 00:01:05,000
+How can you forgot to do that?
+
+33
+00:01:05,000 --> 00:01:06,000
+And of course we forgot
+
+34
+00:01:06,000 --> 00:01:09,000
+to even mention the object which you
+
+35
+00:01:09,000 --> 00:01:10,000
+and we want to store this two, not S3.
+
+36
+00:01:10,000 --> 00:01:11,000
+want to store.
+
+37
+00:01:11,000 --> 00:01:13,000
+This is what happens
+
+38
+00:01:14,000 --> 00:01:14,000
+Let's rerun something is happening
+
+39
+00:01:14,000 --> 00:01:16,000
+when you are excited to see the output.
+
+40
+00:01:16,000 --> 00:01:19,000
+and you can see it is firing an update query.
+
+41
+00:01:19,000 --> 00:01:20,000
+And if you observe
+
+42
+00:01:20,000 --> 00:01:23,000
+before updating it is firing a select query just
+
+43
+00:01:23,000 --> 00:01:25,000
+to check do we have that data?
+
+44
+00:01:25,000 --> 00:01:26,000
+If you have that data,
+
+45
+00:01:26,000 --> 00:01:27,000
+it'll fire the update query.
+
+46
+00:01:27,000 --> 00:01:29,000
+If you don't have that data, it'll,
+
+47
+00:01:29,000 --> 00:01:31,000
+it'll fire a create query.
+
+48
+00:01:31,000 --> 00:01:33,000
+That's how it works. Let's verify the database
+
+49
+00:01:34,000 --> 00:01:37,000
+and let's refresh this view all data, all rows.
+
+50
+00:01:37,000 --> 00:01:40,000
+And you can see we got 65. So update works.
+
+51
+00:01:40,000 --> 00:01:41,000
+What about delete? So it's very simple.
+
+52
+00:01:41,000 --> 00:01:43,000
+You can just go, come back here
+
+53
+00:01:43,000 --> 00:01:44,000
+and say dot delete,
+
+54
+00:01:44,000 --> 00:01:46,000
+pass the object you wanna delete.
+
+55
+00:01:46,000 --> 00:01:49,000
+Let's say I want to delete second object itself
+
+56
+00:01:49,000 --> 00:01:51,000
+and let's relaunch.
+
+57
+00:01:51,000 --> 00:01:53,000
+It'll happen. It'll file the delete query,
+
+58
+00:01:53,000 --> 00:01:55,000
+but still I will wait to see the query
+
+59
+00:01:55,000 --> 00:01:57,000
+and you can see it is filing the query.
+
+60
+00:01:57,000 --> 00:01:59,000
+First, do we have that particular row?
+
+61
+00:01:59,000 --> 00:02:00,000
+And then it deletes that particular row
+
+62
+00:02:00,000 --> 00:02:02,000
+with the help of row number of course,
+
+63
+00:02:02,000 --> 00:02:03,000
+because that's how you delete the data.
+
+64
+00:02:03,000 --> 00:02:07,000
+Let's go back here and see if you have the data.
+
+65
+00:02:07,000 --> 00:02:10,000
+So I'll say view all rows and
+
+66
+00:02:10,000 --> 00:02:11,000
+boom.
+
+67
+00:02:11,000 --> 00:02:12,000
+You can see, we don't have Kiran now.
+
+68
+00:02:12,000 --> 00:02:14,000
+We have Navin and Hersch.
+
+69
+00:02:14,000 --> 00:02:15,000
+So yeah,
+
+70
+00:02:15,000 --> 00:02:16,000
+that's how basically you update and delete.
+
+71
+00:02:16,000 --> 00:02:17,000
+And whereby doing this,
+
+72
+00:02:17,000 --> 00:02:19,000
+we have done with killer operations,
+
+73
+00:02:19,000 --> 00:02:21,000
+but then we also want
+
+74
+00:02:21,000 --> 00:02:22,000
+to add this particular feature
+
+75
+00:02:22,000 --> 00:02:25,000
+in our job portal, right?
+
+76
+00:02:25,000 --> 00:02:26,000
+So let's do that in the next video.
+
diff --git a/16 - Spring Data JPA/008 JPA in Job App_en.srt b/16 - Spring Data JPA/008 JPA in Job App_en.srt
new file mode 100644
index 0000000000000000000000000000000000000000..0af40993ca4ba8c37153ae1484e4ca7024d1fc9f
--- /dev/null
+++ b/16 - Spring Data JPA/008 JPA in Job App_en.srt	
@@ -0,0 +1,784 @@
+1
+00:00:00,000 --> 00:00:03,000
+-: So now we know how do we use SpringDataJpa.
+
+2
+00:00:03,000 --> 00:00:05,000
+And to do that we have created the application for Student.
+
+3
+00:00:05,000 --> 00:00:09,000
+But now we want to implement this in our job application.
+
+4
+00:00:09,000 --> 00:00:11,000
+So if you go back to job application,
+
+5
+00:00:11,000 --> 00:00:14,000
+what we have done 'till now is we have a controller
+
+6
+00:00:14,000 --> 00:00:19,000
+which deals with getting the jobs, getting the job by ID,
+
+7
+00:00:19,000 --> 00:00:23,000
+maybe you are adding a new job, updating a job,
+
+8
+00:00:23,000 --> 00:00:24,000
+and deleting the job, right?
+
+9
+00:00:24,000 --> 00:00:26,000
+So, we have done these things.
+
+10
+00:00:26,000 --> 00:00:28,000
+But then whenever you do any operation,
+
+11
+00:00:28,000 --> 00:00:32,000
+we are sending the request from client to the controller,
+
+12
+00:00:32,000 --> 00:00:35,000
+from controller to service, from service to repo.
+
+13
+00:00:35,000 --> 00:00:36,000
+But in repo we are expecting
+
+14
+00:00:36,000 --> 00:00:38,000
+that it'll connect with database.
+
+15
+00:00:38,000 --> 00:00:41,000
+But no, we have created our own list here, right?
+
+16
+00:00:41,000 --> 00:00:43,000
+And we have some default values.
+
+17
+00:00:43,000 --> 00:00:46,000
+I have changed these values from the previous one
+
+18
+00:00:46,000 --> 00:00:48,000
+because I want to do some searching as well.
+
+19
+00:00:48,000 --> 00:00:50,000
+But yeah, we have this thing here.
+
+20
+00:00:50,000 --> 00:00:51,000
+Almost same thing which we have done,
+
+21
+00:00:51,000 --> 00:00:54,000
+we got postId, profiles, description, experience,
+
+22
+00:00:54,000 --> 00:00:59,000
+and a list a technology expected in that particular job.
+
+23
+00:00:59,000 --> 00:01:02,000
+But now whatever we are doing, we are doing with a list.
+
+24
+00:01:02,000 --> 00:01:04,000
+Now we want to convert this into a JPA.
+
+25
+00:01:04,000 --> 00:01:06,000
+How would we do that? Step-by-step.
+
+26
+00:01:06,000 --> 00:01:09,000
+First of all, if you want to use data JPA here,
+
+27
+00:01:09,000 --> 00:01:11,000
+we have to add the dependency,
+
+28
+00:01:11,000 --> 00:01:13,000
+which means we have to go back
+
+29
+00:01:13,000 --> 00:01:15,000
+to your pom.xml file,
+
+30
+00:01:15,000 --> 00:01:18,000
+and here we need to add the dependency for JPA.
+
+31
+00:01:18,000 --> 00:01:20,000
+Now, from where you will get this,
+
+32
+00:01:20,000 --> 00:01:21,000
+we do have a project, right?
+
+33
+00:01:21,000 --> 00:01:23,000
+So we'll go back to our project,
+
+34
+00:01:23,000 --> 00:01:25,000
+which is the student application.
+
+35
+00:01:25,000 --> 00:01:28,000
+And if you go to the pom of this particular file,
+
+36
+00:01:28,000 --> 00:01:32,000
+and if you search, we have data-jpa.
+
+37
+00:01:32,000 --> 00:01:33,000
+We'll also need Postgres
+
+38
+00:01:33,000 --> 00:01:36,000
+because that's the database I'm going to use.
+
+39
+00:01:36,000 --> 00:01:40,000
+So that go back to our application and paste it here.
+
+40
+00:01:40,000 --> 00:01:44,000
+So done. So we have added the data-jpa and then postgres.
+
+41
+00:01:44,000 --> 00:01:46,000
+Of course we need to load this. Let's reload this.
+
+42
+00:01:46,000 --> 00:01:51,000
+Okay, it is showing some issue with the dependencies.
+
+43
+00:01:51,000 --> 00:01:56,000
+Okay, I've copied the wrong tag. Okay, so no problem.
+
+44
+00:01:56,000 --> 00:01:58,000
+We got this. Let's refresh.
+
+45
+00:01:58,000 --> 00:02:00,000
+Reload the Maven.
+
+46
+00:02:00,000 --> 00:02:02,000
+And taking some time. Okay, done.
+
+47
+00:02:02,000 --> 00:02:03,000
+So that's the first thing you have to do.
+
+48
+00:02:03,000 --> 00:02:05,000
+You have to make sure you have your JPA.
+
+49
+00:02:05,000 --> 00:02:08,000
+Next. I want to change this JobRepo.
+
+50
+00:02:08,000 --> 00:02:10,000
+So till this point, we had all this code.
+
+51
+00:02:10,000 --> 00:02:12,000
+I don't want all this code now,
+
+52
+00:02:12,000 --> 00:02:13,000
+so I can simply comment this.
+
+53
+00:02:13,000 --> 00:02:16,000
+But before commenting, I do want this particular code
+
+54
+00:02:16,000 --> 00:02:19,000
+because I want at least there some data in the database
+
+55
+00:02:19,000 --> 00:02:21,000
+before we start.
+
+56
+00:02:21,000 --> 00:02:25,000
+So I will just copy this, and where should I keep it?
+
+57
+00:02:25,000 --> 00:02:27,000
+Maybe I will keep it in this service.
+
+58
+00:02:28,000 --> 00:02:32,000
+So let me say save multiple jobs.
+
+59
+00:02:32,000 --> 00:02:33,000
+Let me create a method here.
+
+60
+00:02:33,000 --> 00:02:34,000
+Or maybe I can just keep it here,
+
+61
+00:02:34,000 --> 00:02:36,000
+for time, we'll use it later.
+
+62
+00:02:36,000 --> 00:02:38,000
+So yeah, so it's there.
+
+63
+00:02:38,000 --> 00:02:39,000
+We are not going to use it as of now,
+
+64
+00:02:39,000 --> 00:02:41,000
+but we'll use it later.
+
+65
+00:02:41,000 --> 00:02:43,000
+Let's go back to the job.
+
+66
+00:02:43,000 --> 00:02:45,000
+And we don't need any of this code now.
+
+67
+00:02:45,000 --> 00:02:46,000
+So I can just select everything
+
+68
+00:02:46,000 --> 00:02:49,000
+and I can just cut it from here, paste it here.
+
+69
+00:02:49,000 --> 00:02:52,000
+But I also need to comment all these sections
+
+70
+00:02:52,000 --> 00:02:53,000
+just for the reference.
+
+71
+00:02:53,000 --> 00:02:54,000
+So at this point you can see
+
+72
+00:02:54,000 --> 00:02:56,000
+we have a empty class here, right?
+
+73
+00:02:56,000 --> 00:02:59,000
+But now if you want to use data JPA here,
+
+74
+00:02:59,000 --> 00:03:00,000
+what are the steps?
+
+75
+00:03:00,000 --> 00:03:01,000
+If you remember in the code
+
+76
+00:03:01,000 --> 00:03:03,000
+which we have written for the student,
+
+77
+00:03:03,000 --> 00:03:05,000
+if you go back to the repo of student,
+
+78
+00:03:05,000 --> 00:03:06,000
+we were not using a class,
+
+79
+00:03:06,000 --> 00:03:08,000
+we were using an interface.
+
+80
+00:03:08,000 --> 00:03:11,000
+So here also we have to use an interface
+
+81
+00:03:11,000 --> 00:03:13,000
+and this interface will extend.
+
+82
+00:03:13,000 --> 00:03:17,000
+So we have to extend the JPA repository,
+
+83
+00:03:17,000 --> 00:03:18,000
+but I'm not getting that.
+
+84
+00:03:18,000 --> 00:03:22,000
+Let me just check if the dependencies we have added
+
+85
+00:03:22,000 --> 00:03:26,000
+for data-jpa or not.
+
+86
+00:03:26,000 --> 00:03:28,000
+Okay, data-jpa has been added.
+
+87
+00:03:28,000 --> 00:03:31,000
+Is the Maven reloaded properly?
+
+88
+00:03:31,000 --> 00:03:32,000
+Let me check the external libraries.
+
+89
+00:03:32,000 --> 00:03:35,000
+Okay, JPA is here.
+
+90
+00:03:35,000 --> 00:03:36,000
+Okay, I don't know why
+
+91
+00:03:36,000 --> 00:03:39,000
+it was not able to import it by default.
+
+92
+00:03:39,000 --> 00:03:41,000
+There might be some issue with the IDE. Anyway.
+
+93
+00:03:41,000 --> 00:03:43,000
+So you can see, we got the the repository
+
+94
+00:03:43,000 --> 00:03:46,000
+and here I'll mention we are working with JobPost,
+
+95
+00:03:46,000 --> 00:03:49,000
+it should give you suggestion, but it's not.
+
+96
+00:03:49,000 --> 00:03:53,000
+Anyway, sometime we don't have to depend upon the ID.
+
+97
+00:03:53,000 --> 00:03:55,000
+And then it is asking you for the primary key.
+
+98
+00:03:55,000 --> 00:03:58,000
+Now in the JobPost, the post ID is our primary key, right?
+
+99
+00:03:58,000 --> 00:04:00,000
+Which is of type int.
+
+100
+00:04:00,000 --> 00:04:03,000
+So here we have to mention we are working with integer.
+
+101
+00:04:03,000 --> 00:04:06,000
+Okay, that's it. So this is your JPA.
+
+102
+00:04:06,000 --> 00:04:09,000
+So basically we created an interface called JobRepo.
+
+103
+00:04:09,000 --> 00:04:10,000
+And then it is extending JpaRepository.
+
+104
+00:04:10,000 --> 00:04:13,000
+That's the first step, right? Let's remove everything.
+
+105
+00:04:13,000 --> 00:04:16,000
+Now, when you work with this type of things,
+
+106
+00:04:16,000 --> 00:04:19,000
+you have to make changes in the service,
+
+107
+00:04:19,000 --> 00:04:23,000
+because in service now we cannot use repo.addJob
+
+108
+00:04:23,000 --> 00:04:25,000
+because the methods are different.
+
+109
+00:04:25,000 --> 00:04:26,000
+Now what's the method you have to use?
+
+110
+00:04:26,000 --> 00:04:30,000
+So if you say repo. the method will be save.
+
+111
+00:04:30,000 --> 00:04:34,000
+So whatever jobPost you're doing, you have to say save.
+
+112
+00:04:34,000 --> 00:04:35,000
+What about getAllJobs?
+
+113
+00:04:35,000 --> 00:04:38,000
+So we'll just go back here and say repo.findAll.
+
+114
+00:04:40,000 --> 00:04:42,000
+Remember, so we know the methods now, right?
+
+115
+00:04:42,000 --> 00:04:43,000
+I can simply use it.
+
+116
+00:04:44,000 --> 00:04:47,000
+Next, instead of this, we have to say get job.
+
+117
+00:04:47,000 --> 00:04:50,000
+So we have to say findById
+
+118
+00:04:50,000 --> 00:04:53,000
+and you have to use the postId.
+
+119
+00:04:53,000 --> 00:04:56,000
+That's one. Okay, there is some issue with this.
+
+120
+00:04:56,000 --> 00:04:58,000
+It might return optional, remember?
+
+121
+00:04:58,000 --> 00:05:02,000
+So we are expecting a job post, but it'll return optional.
+
+122
+00:05:02,000 --> 00:05:06,000
+So what you can do, is you can say or else here
+
+123
+00:05:06,000 --> 00:05:08,000
+and you can mention if this is empty.
+
+124
+00:05:08,000 --> 00:05:12,000
+In that case you can return a new job post object
+
+125
+00:05:12,000 --> 00:05:13,000
+with a default parameter.
+
+126
+00:05:13,000 --> 00:05:14,000
+So it'll get default values.
+
+127
+00:05:14,000 --> 00:05:15,000
+There are different ways of handling this.
+
+128
+00:05:15,000 --> 00:05:18,000
+Maybe you can return a null or you can throw an exception
+
+129
+00:05:18,000 --> 00:05:21,000
+and then you can have a custom exception handling that.
+
+130
+00:05:21,000 --> 00:05:23,000
+But at this point, just keep it simple.
+
+131
+00:05:23,000 --> 00:05:26,000
+Update. How do we update this?
+
+132
+00:05:26,000 --> 00:05:28,000
+So it's a repo. again, save for the update.
+
+133
+00:05:28,000 --> 00:05:33,000
+Also, we have to say save. What about delete?
+
+134
+00:05:33,000 --> 00:05:35,000
+We know this, we can simply say deleteById,
+
+135
+00:05:35,000 --> 00:05:38,000
+and you can pass postId here.
+
+136
+00:05:38,000 --> 00:05:39,000
+And that's done.
+
+137
+00:05:39,000 --> 00:05:42,000
+So basically we have updated all the methods of service.
+
+138
+00:05:42,000 --> 00:05:44,000
+And you know the magical thing is
+
+139
+00:05:44,000 --> 00:05:46,000
+the controller has no idea what has changed.
+
+140
+00:05:46,000 --> 00:05:49,000
+In fact, you don't even have to change your service class
+
+141
+00:05:49,000 --> 00:05:52,000
+if we have used the same method names, right?
+
+142
+00:05:52,000 --> 00:05:54,000
+So we have used the different method names before.
+
+143
+00:05:54,000 --> 00:05:57,000
+I could have done this method name before,
+
+144
+00:05:57,000 --> 00:05:59,000
+but I just wanted to show you
+
+145
+00:05:59,000 --> 00:06:01,000
+how we should think in the JPO world.
+
+146
+00:06:01,000 --> 00:06:04,000
+So it's not add job or fetch job.
+
+147
+00:06:04,000 --> 00:06:06,000
+So you have to use some specific methods like save,
+
+148
+00:06:06,000 --> 00:06:09,000
+find all, and all those stuff.
+
+149
+00:06:09,000 --> 00:06:10,000
+And remember in the repository
+
+150
+00:06:10,000 --> 00:06:12,000
+we are not writing any method.
+
+151
+00:06:12,000 --> 00:06:14,000
+This interface is empty, right?
+
+152
+00:06:14,000 --> 00:06:15,000
+Of course we are extending it,
+
+153
+00:06:15,000 --> 00:06:18,000
+but what we have defined is empty.
+
+154
+00:06:18,000 --> 00:06:20,000
+So now if I go back to the job controller,
+
+155
+00:06:20,000 --> 00:06:22,000
+you can see there's no changes required here.
+
+156
+00:06:22,000 --> 00:06:24,000
+But will this really work?
+
+157
+00:06:24,000 --> 00:06:28,000
+In fact, even if it works, I want to do some changes.
+
+158
+00:06:28,000 --> 00:06:30,000
+What change I want to do is when I load this class,
+
+159
+00:06:30,000 --> 00:06:32,000
+service class for the first time,
+
+160
+00:06:32,000 --> 00:06:35,000
+I want this data to be there.
+
+161
+00:06:35,000 --> 00:06:38,000
+Or maybe we can hit a particular URL to load the data.
+
+162
+00:06:38,000 --> 00:06:42,000
+So I can say public_void,
+
+163
+00:06:43,000 --> 00:06:44,000
+I don't want to return anything,
+
+164
+00:06:44,000 --> 00:06:48,000
+or maybe I will just say String, just to say pass or not.
+
+165
+00:06:48,000 --> 00:06:50,000
+And I will say loadData.
+
+166
+00:06:51,000 --> 00:06:53,000
+This request will come coming from the client side,
+
+167
+00:06:53,000 --> 00:06:54,000
+and I'll send a GetMapping
+
+168
+00:06:54,000 --> 00:06:57,000
+and I will say that the URL is load.
+
+169
+00:06:57,000 --> 00:06:59,000
+So basically whenever I call load,
+
+170
+00:06:59,000 --> 00:07:00,000
+it should load the database.
+
+171
+00:07:00,000 --> 00:07:02,000
+That's what I want, and we'll do it only once.
+
+172
+00:07:02,000 --> 00:07:04,000
+So, return, success even if it fails.
+
+173
+00:07:04,000 --> 00:07:06,000
+That's how you can fake something is working.
+
+174
+00:07:06,000 --> 00:07:10,000
+But let's load. So I will say service.load.
+
+175
+00:07:10,000 --> 00:07:12,000
+So I want to basically call this method.
+
+176
+00:07:12,000 --> 00:07:13,000
+And in service we don't have this method,
+
+177
+00:07:13,000 --> 00:07:16,000
+so let's create one in the service class.
+
+178
+00:07:16,000 --> 00:07:18,000
+So whatever I was doing here,
+
+179
+00:07:18,000 --> 00:07:22,000
+I want to do this inside the load method,
+
+180
+00:07:22,000 --> 00:07:25,000
+but all this data I want to store in database.
+
+181
+00:07:25,000 --> 00:07:28,000
+So what I can do is I can say repo.
+
+182
+00:07:28,000 --> 00:07:31,000
+There's a method called saveAll, if you can see that?
+
+183
+00:07:31,000 --> 00:07:33,000
+In the saveAll just past jobs,
+
+184
+00:07:33,000 --> 00:07:35,000
+what it'll do is when you call this method
+
+185
+00:07:35,000 --> 00:07:36,000
+for the first time,
+
+186
+00:07:36,000 --> 00:07:38,000
+or whenever you call this method,
+
+187
+00:07:38,000 --> 00:07:42,000
+it will try to save this entire list in the database.
+
+188
+00:07:42,000 --> 00:07:45,000
+So by default we'll be having this five entries, okay?
+
+189
+00:07:45,000 --> 00:07:46,000
+Will this work? What do you think?
+
+190
+00:07:47,000 --> 00:07:49,000
+It will not, okay, why? I will tell you.
+
+191
+00:07:49,000 --> 00:07:51,000
+First of all, in the job post,
+
+192
+00:07:51,000 --> 00:07:53,000
+we have not mentioned this is entity.
+
+193
+00:07:53,000 --> 00:07:56,000
+We have not mentioned this is id.
+
+194
+00:07:56,000 --> 00:07:59,000
+Additionally, we have not done any configuration
+
+195
+00:07:59,000 --> 00:08:01,000
+in the application of properties.
+
+196
+00:08:01,000 --> 00:08:03,000
+Let's do that in the next video.
+
diff --git a/16 - Spring Data JPA/008 Source-Code.url b/16 - Spring Data JPA/008 Source-Code.url
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+++ b/16 - Spring Data JPA/008 Source-Code.url	
@@ -0,0 +1,2 @@
+[InternetShortcut]
+URL=https://github.com/navinreddy20/spring6-course/tree/fa914a08f0f89f7d8a8a16362d928b0bdb45d337/10%20Spring%20DataJPA/9.8%20Jpa%20In%20Job%20App/spring-boot-rest
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