Hi friend,

import java.io.*;
import java.net.*;

public class KnockKnockClient {
public static void main(String[] args) throws IOException {

Socket soc = null;
PrintWriter out = null;
BufferedReader in = null;

try {
soc = new Socket("vinod", 135);
out = new PrintWriter(soc.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(soc.getInputStream()));
} catch (UnknownHostException e) {
System.err.println("Don't know about host: vinod.");
System.exit(1);
} catch (IOException e) {
System.err.println("Couldn't get I/O for the connection to: vinod.");
System.exit(1);
}

BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
String fromServer;
String fromUser;

while ((fromServer = in.readLine()) != null) {
System.out.println("Server: " + fromServer);
if (fromServer.equals("Bye."))
break;

fromUser = stdIn.readLine();
if (fromUser != null) {
System.out.println("Client: " + fromUser);
out.println(fromUser);
}
}

out.close();
in.close();
stdIn.close();
soc.close();
}
}


----------------------------------------------------------------

Read for more information.

http://www.roseindia.net/java/network/interfaces-list.shtml

Thanks.