java tcp/udp chat program with GUI

[eyeofsoul]

i have build the gui but i am having problem with implementing the tcp/udp. can somebody help me.
i have server and client. the server can chat with the client. when i tried to to use the udp of tcp the gui seems hangs..

this is the code for server

package ds;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.*;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.border.TitledBorder;

public class Server extends JFrame implements ActionListener {
  // Text area for displaying contents
  private JTextField toclient = new JTextField();
  private JTextArea display = new JTextArea();
  private JButton send = new JButton("Send/Start Server");
  public DatagramSocket aSocket;
  public DatagramPacket request;
  public DatagramPacket reply;

  public static void main(String[] args) {
      
    new Server();
  }

    public void actionPerformed(ActionEvent e) {
       if (e.getSource() == send){
           try {
           
           String msg = toclient.getText();
           byte [] xy = msg.getBytes();
           reply = new DatagramPacket(xy,xy.length,
           request.getAddress(), request.getPort());
            
           //sending a reply message to client
                aSocket.send(reply);
            } catch (IOException ex) {
                ex.printStackTrace();
            }
       }
    }

  public Server() {
    
    JPanel input = new JPanel();
    input.setLayout(new BorderLayout());
    input.setBorder(new TitledBorder("Enter Message"));
    input.add(toclient, BorderLayout.CENTER);
    input.add(send, BorderLayout.EAST);
    
    JPanel output = new JPanel();
    output.setLayout(new BorderLayout());
    output.setBorder(new TitledBorder("Conversation"));
    output.add(display, BorderLayout.CENTER);
    
    JPanel gabung = new JPanel();
    gabung.setLayout(new GridLayout(2, 1));
    gabung.add(input);
    gabung.add(output);
    
    this.getContentPane().add(gabung, BorderLayout.NORTH);
    send.addActionListener(this);
    
    setTitle("Chat Server");
    setSize(500, 300);
    setVisible(true);
    
    
    
     }
  
   
}

this is client

package ds;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.*;
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.border.TitledBorder;

public class Client extends JFrame implements ActionListener {
  // Text area for displaying contents
  private JTextField toclient = new JTextField();
  private JTextArea display = new JTextArea();
  private JButton send = new JButton("Send");

  public static void main(String[] args) {
    new Client();
  }

    public void actionPerformed(ActionEvent e) {
    }

  public Client() {
    
    JPanel input = new JPanel();
    input.setLayout(new BorderLayout());
    input.setBorder(new TitledBorder("Enter Message"));
    input.add(toclient, BorderLayout.CENTER);
    input.add(send, BorderLayout.EAST);
    
    JPanel output = new JPanel();
    output.setLayout(new BorderLayout());
    output.setBorder(new TitledBorder("Conversation"));
    output.add(display, BorderLayout.CENTER);
    
    JPanel gabung = new JPanel();
    gabung.setLayout(new GridLayout(2, 1));
    gabung.add(input);
    gabung.add(output);
    
    this.getContentPane().add(gabung, BorderLayout.NORTH);
    
    setTitle("Chat Client");
    setSize(500, 300);
    setVisible(true);
    
    
    
}

 
  
}

where do i need to implement the udp or tcp?

[swatibksh]

You can do it simply using tcp. Use "ServerSock et" on server side to accept the connection from client. Using "Socket" class on client side connect to the server. Then u can communicate by creating the input and output streams for the socket.