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שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/MVCSocialMediaApp/ProfileView.java

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+package JCEOODCourse.DesignPatterns.MVCSocialMediaApp;
+
+import java.util.Map;
+
+public class ProfileView {//view
+    public void displayProfile(User user) {
+        System.out.println("Username: " + user.getUsername());
+        System.out.println("Friends: " + String.join(", ", user.getFriends()));
+        System.out.println("Posts:\n- " + String.join("\n- ", user.getPosts()));
+    }
+
+    public void displayAllProfiles(Map<String, User> users) {
+        System.out.println("\nAll Profiles:");
+        System.out.println("----");
+
+        for (User user : users.values()) {
+            displayProfile(user);
+            System.out.println("----");
+        }
+    }
+
+    public void displayMessage(String message) {
+        System.out.println(message);
+    }
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/MVCSocialMediaApp/SocialMediaApp.java

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+package JCEOODCourse.DesignPatterns.MVCSocialMediaApp;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SocialMediaApp {
+    public static void main(String[] args) {
+        UserManagerModel userManagerModel = new UserManagerModel();
+
+        ProfileView profileView = new ProfileView();
+
+        UserController userController = new UserController(userManagerModel, profileView);
+
+        // Create users and add them to the user manager
+        List<String> initialFriendsAvi = new ArrayList<>();
+        List<String> initialPostsAvi = new ArrayList<>();
+        User Avi = new User("Avi", initialFriendsAvi, initialPostsAvi);
+        userController.addUser(Avi);
+
+        List<String> initialFriendsBeni = new ArrayList<>();
+        List<String> initialPostsBeni = new ArrayList<>();
+        User Beni = new User("Beni", initialFriendsBeni, initialPostsBeni);
+        userController.addUser(Beni);
+
+        // Add friends and posts through the controller
+        userController.addFriend("AuserManagerModelvi", "Beni");
+        userController.addFriend("Avi", "Gadi");
+        userController.addPost("Avi", "Hello, everyone!");
+        userController.addPost("Avi", "It's a beautiful day!");
+
+        userController.addFriend("Beni", "Avi");
+        userController.addPost("Beni", "I hope you are feeling well today!");
+
+        // Display profiles of all users
+        userController.displayAllProfiles();
+    }
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/MVCSocialMediaApp/User.java

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+package JCEOODCourse.DesignPatterns.MVCSocialMediaApp;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class User {
+    private String username;
+    private List<String> friends;
+    private List<String> posts;
+
+    public User(String username, List<String> friends, List<String> posts) {
+        this.username = username;
+        this.friends = new ArrayList<>(friends);
+        this.posts = new ArrayList<>(posts);
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public List<String> getFriends() {
+        return new ArrayList<>(friends);
+    }
+
+    public void setFriends(List<String> friends) {
+        this.friends = new ArrayList<>(friends);
+    }
+
+    public List<String> getPosts() {
+        return new ArrayList<>(posts);
+    }
+
+    public void setPosts(List<String> posts) {
+        this.posts = new ArrayList<>(posts);
+    }
+
+    public void addFriend(String friend) {
+        this.friends.add(friend);
+    }
+
+    public void addPost(String post) {
+        this.posts.add(post);
+    }
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/MVCSocialMediaApp/UserController.java

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+package JCEOODCourse.DesignPatterns.MVCSocialMediaApp;
+
+import java.util.List;
+import java.util.Map;
+
+public class UserController {//controller
+    private final UserManagerModel userManagerModel;
+    private final ProfileView view;
+
+    public UserController(UserManagerModel userManagerModel, ProfileView view) {
+        this.userManagerModel = userManagerModel;
+        this.view = view;
+    }
+
+    public void addUser(User user) {
+        userManagerModel.addUser(user);
+        view.displayMessage("User " + user.getUsername() + " added.");
+    }
+
+    public void updateUser(String username, List<String> friends, List<String> posts) {
+        User user = userManagerModel.getUser(username);
+        if (user != null) {
+            user.setFriends(friends);
+            user.setPosts(posts);
+            userManagerModel.updateUser(user);
+            view.displayMessage("User " + username + " updated.");
+        } else {
+            view.displayMessage("User " + username + " not found.");
+        }
+    }
+
+    public void displayProfile(String username) {
+        User user = userManagerModel.getUser(username);
+        if (user != null) {
+            view.displayProfile(user);
+        } else {
+            view.displayMessage("User " + username + " not found.");
+        }
+    }
+
+    public void displayAllProfiles() {
+        Map<String, User> users = userManagerModel.getAllUsers();
+        view.displayAllProfiles(users);
+    }
+
+    public void addFriend(String username, String friend) {
+        User user = userManagerModel.getUser(username);
+        if (user != null) {
+            user.addFriend(friend);
+            userManagerModel.updateUser(user);
+            view.displayMessage("Friend " + friend + " added to user " + username + ".");
+        } else {
+            view.displayMessage("User " + username + " not found.");
+        }
+    }
+
+    public void addPost(String username, String post) {
+        User user = userManagerModel.getUser(username);
+        if (user != null) {
+            user.addPost(post);
+            userManagerModel.updateUser(user);
+            view.displayMessage("Post added to user " + username + ": " + post);
+        } else {
+            view.displayMessage("User " + username + " not found.");
+        }
+    }
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/MVCSocialMediaApp/UserManagerModel.java

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+package JCEOODCourse.DesignPatterns.MVCSocialMediaApp;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class UserManagerModel {//model
+    private final Map<String, User> users;
+
+    public UserManagerModel() {
+        users = new HashMap<>();
+    }
+
+    public void addUser(User user) {
+        users.put(user.getUsername(), user);
+    }
+
+    public User getUser(String username) {
+        return users.get(username);
+    }
+
+    public void removeUser(String username) {
+        users.remove(username);
+    }
+
+    public void updateUser(User user) {
+        users.put(user.getUsername(), user);
+    }
+
+    public Map<String, User> getAllUsers() {
+        return users;
+    }
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/Momento/TextDocument.java

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+package JCEOODCourse.DesignPatterns.Momento;
+
+public class TextDocument {
+
+  private String text = "";
+  private Memento memento = new Memento(text);
+
+  public void write(String text) {
+    this.text += text;
+  }
+
+  public void print() {
+    System.out.println(text);
+  }
+
+  public void save() {
+    memento.setState(text);
+  }
+
+  public void undo() {
+    text = memento.getState();
+  }
+
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/MultipleTon/PrintSpoolerCounter.java

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+package JCEOODCourse.DesignPatterns.MultipleTon;
+
+import java.util.*;
+
+public class PrintSpoolerCounter {
+    
+	private static List<PrintSpoolerCounter> al=new ArrayList<PrintSpoolerCounter>();
+	
+    //private static boolean initialized = false;
+    
+    private static int counter = 0;
+    private static int maxSpooler = 0;
+    
+    public static void setInstance(int num) {
+    	maxSpooler = num;
+    }
+    
+    private PrintSpoolerCounter(){ }
+    
+    private void init() {
+        // Code to initialize our print spooler goes here
+    }
+    
+    public static PrintSpoolerCounter getInstance(int var) {
+    	if (var < counter)
+    	{
+    		return al.get(var);
+    	}
+    	else if (var < maxSpooler)
+    	{
+    		PrintSpoolerCounter spooler;
+    		spooler = new PrintSpoolerCounter();
+    		spooler.init();
+    		al.add(spooler);
+    		counter++;
+    		return spooler;
+    	}
+		return null;
+    }            
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/MultipleTon/ResourceManagerCounter.java

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+package JCEOODCourse.DesignPatterns.MultipleTon;
+
+import java.util.Scanner;
+
+public class ResourceManagerCounter {
+
+    public static void main(String[] args) { 
+    	// Using Scanner for Getting Input from User
+        Scanner in = new Scanner(System.in); 
+
+        System.out.println("Please enter how many printers ");
+        int num = in.nextInt();
+ 
+        PrintSpoolerCounter.setInstance(num);
+        PrintSpoolerCounter spooler0 = PrintSpoolerCounter.getInstance(0);
+        PrintSpoolerCounter spooler00 = PrintSpoolerCounter.getInstance(0);
+        PrintSpoolerCounter spooler1 = PrintSpoolerCounter.getInstance(1);
+        PrintSpoolerCounter spooler6 = PrintSpoolerCounter.getInstance(6);
+    }
+
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/ObserverMessages/Main.java

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+package JCEOODCourse.DesignPatterns.ObserverMessages;
+
+public class Main {
+	public static void main(String[] args)    {
+        SubscriberOne s1 = new SubscriberOne();
+        SubscriberTwo s2 = new SubscriberTwo();
+        SubscriberThree s3 = new SubscriberThree();
+         
+        SubjectPublisher p = new SubjectPublisher();
+         
+        p.attach(s1);
+        p.attach(s2);
+         
+        p.notifyUpdate(new Message("First Message"));   //s1 and s2 will receive the update
+         
+        p.detach(s1);
+        p.attach(s3);
+         
+        p.notifyUpdate(new Message("Second Message")); //s2 and s3 will receive the update
+        
+        System.out.println("End of program");
+    }
+}

שנה ב/סמסטר ב/הנדסת תוכנה/תרגילי כיתה/תרגול 8-9 - דוג_ קוד של המרצה ל-Design Patterns/ObserverMessages/Message.java

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+package JCEOODCourse.DesignPatterns.ObserverMessages;
+
+public class Message {
+	final String messageContent;
+    
+    public Message (String m) {
+        this.messageContent = m;
+    }
+ 
+    public String getMessageContent() {
+        return messageContent;
+    }
+}