Slip 1 - B) Write a socket program in java for chatting application.(Use Swing)

Solution:

Server code:

import java.awt.event.*;

import java.awt.*;

import java.net.*;

import java.io.*;

class MyServer extends Frame implements ActionListener

{

static TextField t1=new TextField(20);

static Button b1=new Button("Send");

static TextArea ta=new TextArea(5,20);

static DataOutputStream dos;

static DataInputStream dis;

static ServerSocket st;

static Socket s;

static String r;

MyServer()

{

setLayout(new FlowLayout());

add(t1);add(b1);add(ta);

b1.addActionListener(this);

setVisible(true);

setSize(300,300);

}

public void actionPerformed(ActionEvent e)

{

String cmd=e.getActionCommand();

if(cmd.equalsIgnoreCase("send"))

{

try

{

r=t1.getText();

dos.writeUTF(r);

}

catch(Exception p)

{

}

}

}

public static void main(String[] d ) throws IOException

{

new MyServer();

st=new ServerSocket(1281);

s=st.accept();

dos=new DataOutputStream(s.getOutputStream());

dis=new DataInputStream(s.getInputStream());

while(true)

{

r=dis.readUTF();

ta.append("client:"+r+"\n");

}

}

}

Client code:

import java.awt.event.*;

import java.awt.*;

import java.net.*;

import java.io.*;

class MyClient extends Frame implements ActionListener

{

static TextField t1=new TextField(20);

static Button b1=new Button("Send");

static TextArea ta=new TextArea(5,20);

static DataOutputStream dos;

static DataInputStream dis;

static Socket s;

static String r;

MyClient()

{

setLayout(new FlowLayout());

add(t1);add(b1);add(ta);

b1.addActionListener(this);

setVisible(true);

setSize(300,300);

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==b1)

{

try

{

r=t1.getText();

dos.writeUTF(r);

}

catch(Exception p)

{

}

}

}

public static void main(String[] d ) throws IOException

{

MyClient x= new MyClient();

s=new Socket("localhost",1281);

dos=new DataOutputStream(s.getOutputStream());

dis=new DataInputStream(s.getInputStream());

while(true)

{

r=dis.readUTF();

ta.append("Server:"+r+"\n");

}

}

}