import java.net.*;
import java.io.*;
public class chatServer
{
    public static void main (String[] args) throws IOException
    {
        InetAddress lclAdr = InetAddress.getLocalHost ();
        System.out.println ("Your IP address is " + lclAdr.getHostAddress ());
        String datavar;
        ServerSocket ss;
        ss = new ServerSocket (5055);
        Socket mySocket;
        mySocket = ss.accept ();
        InputStreamReader isr = new InputStreamReader (mySocket.getInputStream ());
        BufferedReader br = new BufferedReader (isr);
        PrintWriter pw = new PrintWriter (mySocket.getOutputStream (), true);
        InputStreamReader reader = new InputStreamReader (System.in);
        BufferedReader input = new BufferedReader (reader);
        datavar = br.readLine ();
        System.out.println (datavar);
        pw.println (input.readLine ());
    }
}

import java.net.*;
import java.io.*;
public class chatClient
{
    public static void main (String[] args) throws IOException
    {
        InetAddress lclAdr = InetAddress.getLocalHost ();
        System.out.println ("Your IP address is " + lclAdr.getHostAddress ());
        Socket mySocket = new Socket ("192.168.1.100", 5055); //input your server or host ip address
        String datavar;
        InputStreamReader isr = new InputStreamReader (mySocket.getInputStream ());
        BufferedReader br = new BufferedReader (isr);
        PrintWriter pw = new PrintWriter (mySocket.getOutputStream (), true);
        pw.print ("IP Address of connecting computer : " + lclAdr.getHostAddress ());
        datavar = br.readLine ();
    }
}

import java.net.*;
import java.awt.*;
import java.io.*;
import java.awt.event.*;
import javax.swing.*;

public class ChatServer extends JApplet implements ActionListener, Runnable
{
    private JTextArea textbox; //shows transmitted and recived messages
    private JTextField input;  // A text-input box
    private Thread chat;
    private boolean running;  // If False, quits applet
    /**
     * Initialize the applet.
     */
    public void init ()
    {
        JPanel content = new JPanel ();
        content.setBackground (Color.LIGHT_GRAY);
        content.setLayout (new BorderLayout (3, 3));
        content.setBorder (BorderFactory.createLineBorder (Color.GRAY, 3));
        textbox = new JTextArea ();
        textbox.setEditable (false);
        content.add (new JScrollPane (textbox), BorderLayout.CENTER);
        JPanel bottom = new JPanel ();
        bottom.setBackground (Color.LIGHT_GRAY);
        bottom.setLayout (new BorderLayout (3, 3));
        content.add (bottom, BorderLayout.SOUTH);
        input = new JTextField ();
        input.setBackground (Color.WHITE);
        input.addActionListener (this);
        bottom.add (input, BorderLayout.CENTER);
        JButton send = new JButton ("Send");
        send.addActionListener (this);
        bottom.add (send, BorderLayout.EAST);
        bottom.add (new JLabel ("Text to send:"), BorderLayout.WEST);
        setContentPane (content);
    }


    //Allows user to click Send button
    public void actionPerformed (ActionEvent evt)
    {
        postMessage ("SENT: " + input.getText ());
        input.selectAll ();
        input.requestFocus ();
        if (running == false)
        {
            chat = new Thread (this);
            running = true;
            chat.start ();
        }
    }


    private void postMessage (String message)
    {

        // InetAddress lclAdr = InetAddress.getLocalHost ();
        // textbox.append (lclAdr.getHostAddress () + "\n"); //should allow to post your ip address.

        textbox.append (message + "\n");
        //allows scrolling of text
        textbox.setCaretPosition (textbox.getDocument ().getLength ());
    }

/*        ServerSocket SS;
        Socket mySocket;
        SS = new ServerSocket (5055);
        mySocket = SS.accept ();
*/

    public void run ()
    {
        while (running)
        {
           /* try
            {
     
            }
            catch (Exception e)
            {
            }*/
        }
    }


    //When applet is stopped, make sure that the thread will terminate by setting running to false.

    public void stop ()
    {
        running = false;
        chat = null;
    }
}