Q: To implement two way chatting.

Client Side:

import java.io.*;

import java.net.*;

class client

{

static void p(String s)

{

System.out.println(s);

}

public static void main(String args[])throws UnknownHostException,IOException

{

String s1,s2;

Socket s=new Socket("LocalHost",1010);

while(true)

{

BufferedReader br=new BufferedReader(new InputStreamReader(s.getInputStream()));

BufferedReader bclient=new BufferedReader(new InputStreamReader(System.in));

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

s2=bclient.readLine();

dos.writeBytes(s2+'\n');

s1=bclient.readLine();

p(s1);

}

}

}

Server Side:

import java.net.*;

importjava.io.*;

class server

{

static void p(String s)

{

System.out.println(s);

}

public static void main(String args[])throws UnknownHostException,IOException

{

String s1,s2;

ServerSocket ss=new ServerSocket("LocalHost",1010);

while(true)

{

Socket s=ss.accept();

BufferedReader br=new BufferedReader(new InputStreamReader(s.getInputStream()));

BufferedReader bserser=new BufferedReader(new InputStreamReader(System.in));

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

s1=br.readLine();

p(s1);

s2=bserver.readLine();

dos.writeBytes(s2+'\n');

}

}

}