JAS

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

public class ChatServer
{
    public static ServerSocket server;
    public static Socket client;
    public static BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

    public static void accept()throws IOException
    {

        server = new ServerSocket(63400);

        while(true)
        {

            client = server.accept();
            BufferedReader r = new BufferedReader(new InputStreamReader(client.getInputStream()));

            String clientmsg = r.readLine();
            System.out.println("Client: "+clientmsg);
        }
    }

    public static void answer()throws IOException
    {

        Socket addressee = new Socket("localhost",63402);
        PrintWriter answerer = new PrintWriter(addressee.getOutputStream(),true);

        String answer = reader.readLine();
        answerer.println(answer);
    }

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

        ChatServer.accept();
    }
}