catch (FileNotFoundException e) {...}

Week 7: Enum, Generic Type, Streams, write to file, class diagram/12B. Names to a File

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+Write a program that asks the user for names.
+The given names are added to a file named 'names.txt' such that each name is on its own line.
+When the user enters the name "stop", the program execution ends.
+
+
+
+
+import java.util.Random;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.io.FileNotFoundException;
+import java.util.Collections;
+import java.util.Scanner;
+
+
+
+public class Test{
+    public static void main(String[] args){
+        final Random r = new Random();
+
+
+        //ADD
+        Scanner reader = new Scanner(System.in);
+        ArrayList<String> names = new ArrayList<String>();
+
+        // get user input 'name'
+        while (true) {
+            System.out.print("Enter a name: ");
+            String name = String.valueOf(reader.nextLine());
+
+            // break if user inputs "stop"
+            if (name.equals("stop")) {
+                break;
+            }
+
+            // add name to ArrayList
+            names.add(name);          
+        }
+
+        
+        // add name to the file, separated by newline "\n"
+        try (PrintWriter file = new PrintWriter("names.txt")) {
+            names.forEach(name -> file.write(name + "\n"));
+        }
+        catch (FileNotFoundException e) {
+            System.out.println("An error occurred: " + e);
+        }
+    
+
+        System.out.println("File content:");
+        
+    }
+}
+
+
+Enter a name: Jack
+Enter a name: Sophie
+Enter a name: Oliver
+Enter a name: Harry
+Enter a name: Harry
+Enter a name: Jack
+Enter a name: Sophie
+Enter a name: Lily
+Enter a name: Oliver
+Enter a name: Emily
+Enter a name: Emily
+Enter a name: Lily
+Enter a name: stop
+
+
+File content:
+Jack
+Sophie
+Oliver
+Harry
+Harry
+Jack
+Sophie
+Lily
+Oliver
+Emily
+Emily
+Lily
+
+