TCP Server Client Two Person Chat Program in Java with GUI

Server-Client chat program or two way chat using TCP connection is a common problem for java practical labs or networking labs. Here this post introduces a simple lightweight Server client two person chat program using java. The program uses ServerSocket and Socket classes available in java.net package. This program is written so as to use the same as server or as client. Both the persons who chat use the same program. One should select hosting (acting as server) while the other could connect to him by entering the server ip address. I have added screenshots of the program also.
See Screenshots

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.WindowConstants;
import javax.swing.border.EtchedBorder;

public class TwoChat extends javax.swing.JFrame {

    ServerSocket ss;
    Socket s;
    JTextField text=new JTextField();
    JButton send=new JButton();
    JTextArea messages=new JTextArea();
    PrintWriter pout;
    BufferedReader br;
    ActionListener al;
    String ipstring;
    boolean ready2send=false;
    TwoChat pt;
    boolean HorC;
    String cliOrServ;

    public TwoChat(boolean hostOrConnect,String ip)
    {

        ipstring=ip;
        setLayout(null);
        setSize(500,500);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        add(text);
        text.setLocation(5,5);
        text.setSize(getWidth()-40-60,30);
        text.setEnabled(false);
        add(send);
        send.setLocation(10+text.getWidth(),text.getY());
        send.setText("Send");
        send.setSize(60,30);
        add(messages);
        messages.setEditable(false);
        messages.setBorder(new EtchedBorder());
        messages.setLocation(5,text.getHeight()+text.getY()+5);
        messages.setSize(getWidth()-30,getHeight()-text.getY()-text.getHeight()-50);
        
 al=new ActionListener()
 {
 public void actionPerformed(ActionEvent e)
  {
  ready2send=true;
  }
 };
        
 send.addActionListener(al);
        pt=this;
        HorC=hostOrConnect;
        if(HorC)
            cliOrServ="\nServer: ";
        else
            cliOrServ="\nClient: ";
        Messenger.start();
            
    }
      
    
    public static void main(String args[]) {

        
        int inp=JOptionPane.showConfirmDialog(null,"Do you want to host the chat?\nYes - Act as server\nNo - Act as client","Want to host a chat?",JOptionPane.YES_NO_OPTION);
        if(inp==0)
            {
            new TwoChat(true,null).setVisible(true);
            }
        else 
            {
            String ipstring=JOptionPane.showInputDialog("Please enter the ip address");
            try{
                InetAddress.getByName(ipstring);
                new TwoChat(false,ipstring).setVisible(true);
            }catch(Exception e){JOptionPane.showMessageDialog(null,"Invalid or Unreachable IP");}
            }
        
    }


Thread Messenger=new Thread()
{
 public void run()
 {
  try{
  if(HorC)
        {
        messages.setText("Waiting for an incoming connection.\nEnter my ip at client side.\nMy ip: "+InetAddress.getLocalHost().getHostAddress()); 
        ss=new ServerSocket(9999);
        s= ss.accept();
        s.setKeepAlive(true);
        }
  else
        {
        messages.setText("Connecting to:"+ipstring+":9999"); 
        s=new Socket(InetAddress.getByName(ipstring),9999);
        }
  text.setEnabled(true);
  pout = new PrintWriter(s.getOutputStream(),true);
  br=new BufferedReader(new InputStreamReader(s.getInputStream()));
  messages.setText(messages.getText()+"\nConnected to:"+s.getInetAddress().getHostAddress()+":"+s.getPort());
  while(true)
  {
   if(ready2send==true)
        {
        pout.println(text.getText());
        messages.setText(messages.getText()+"\nMe: "+text.getText());
        text.setText("");
        ready2send=false;
        }
    if(br.ready())
        {
        messages.setText(messages.getText()+cliOrServ+br.readLine());
        }
    Thread.sleep(80);
  }
 }catch(Exception ex)
    {
    JOptionPane.showMessageDialog(pt,ex.getMessage());
    messages.setText("Cannot connect!");
      try {
          wait(3000);
      } catch (InterruptedException ex1) {}
    System.exit(0);
    }
 }
};

}

Screenshots