commiting

ChatArea.java

+package com.company;
+import javax.swing.*;
+import java.awt.*;
+
+public class ChatArea extends JTextArea {
+
+    public ChatArea() {
+
+        super(10, 30);
+        this.setEditable(false);
+        this.setLineWrap(true);
+        addMessage("9687" , "gkrjk");
+    }
+
+    public void addMessage(String senderName, String message) {
+
+        this.append(senderName + ":" + message);
+    }
+}
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ChatRoomGUI.java

+package com.company;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class ChatRoomGUI extends JFrame {
+
+
+    private final String WINDOWS_TITLE = "AUT Chat Room";
+    private final int WIDTH = 500, HEIGHT = 500;
+    private final int X = 100, Y = 100;
+
+    public ChatRoomGUI() {
+        super();
+        this.setTitle(WINDOWS_TITLE);
+        this.setLayout(new BorderLayout());
+        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        this.setSize(WIDTH, HEIGHT);
+        this.setLocation(X, Y);
+
+        ChatArea chatBox = new ChatArea();
+        MessageArea message = new MessageArea();
+        ParticipantsArea participants = new ParticipantsArea();
+
+        add(chatBox, BorderLayout.CENTER);
+        add(message, BorderLayout.PAGE_END);
+        add(participants, BorderLayout.WEST);
+
+        this.setVisible(true);
+    }
+}
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Main.java

+package com.company;
+
+public class Main {
+
+    public static void main(String[] args) {
+	ChatRoomGUI chatRoomGUI = new ChatRoomGUI();
+    }
+}

MessageArea.java

+package com.company;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class MessageArea extends JTextArea {
+
+    private final int WIDTH = 50, HEIGHT = 50;
+    private final int X = 100, Y = 100;
+
+    public MessageArea() {
+        super();
+        this.setLayout(new BorderLayout());
+        this.setSize(WIDTH, HEIGHT);
+        this.setLocation(X, Y);
+
+        JTextField textField = new JTextField();
+        add(textField, BorderLayout.CENTER);
+
+        JButton button = new JButton("Send Message");
+        add(button, BorderLayout.EAST);
+
+
+        this.setVisible(true);
+    }
+}
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ParticipantsArea.java

+package com.company;
+
+import javax.swing.DefaultListModel;
+import javax.swing.*;
+import java.awt.*;
+
+public class ParticipantsArea extends JPanel {
+
+    private final int WIDTH = 50, HEIGHT = 50;
+    private final int X = 100, Y = 100;
+
+
+
+    DefaultListModel model;
+    public ParticipantsArea() {
+
+        super();
+
+        model = new DefaultListModel();
+        JList online = new JList(model);
+
+
+        this.setLayout(new BorderLayout());
+        this.setSize(WIDTH, HEIGHT);
+        this.setLocation(X, Y);
+
+        JLabel label = new JLabel("onlineUsers");
+        add(label , BorderLayout.PAGE_START);
+
+        add(online, BorderLayout.CENTER);
+
+        addUser("Somayeh");
+
+        this.setVisible(true);
+    }
+
+
+
+    public void addUser(String userName){
+        model.addElement(userName);
+    }
+
+    public void removeUser(String userName){
+        model.removeElement(userName);
+    }
+
+}
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UsernameFrame.java

+package com.company;
+
+import javax.swing.*;
+import java.awt.*;
+
+class NameFrame extends JFrame {
+    private static final String BTN_TXT = " Start Chatting ...";
+    private static final String LABEL_TXT = " Choose Your UserName  ";
+    private static final int WIDTH = 300, HEIGHT = 100;
+
+    JTextField textField;
+    JButton btn;
+
+    public NameFrame() throws HeadlessException {
+        super();
+        this.setLayout(new BorderLayout());
+        JLabel label = new JLabel("Choose Your UserName");
+        add(label, BorderLayout.PAGE_START);
+        textField = new JTextField();
+        add(textField, BorderLayout.CENTER);
+        btn = new JButton(LABEL_TXT);
+        add(btn, BorderLayout.PAGE_END);
+        this.setLayout(new BorderLayout());
+        setSize(WIDTH, HEIGHT);
+        setVisible(true);
+    }
+}
\ No newline at end of file