Java chat client

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


public class  chatclient
{
    public static void main(String args[]) throws Exception
    {
        Socket sk=new Socket("localhost",2000);
        BufferedReader sin=new BufferedReader(new InputStreamReader(sk.getInputStream()));
        PrintStream sout=new PrintStream(sk.getOutputStream());
        BufferedReader stdin=new BufferedReader(new InputStreamReader(System.in));
        String s;
        while (  true )
        {
            System.out.print("Client : ");
            s=stdin.readLine();
            sout.println(s);
            s=sin.readLine();
            System.out.print("Server : "+s+"\n");
            if ( s.equalsIgnoreCase("BYE") )
               break;
        }
         sk.close();
         sin.close();
         sout.close();
        stdin.close();
    }
}