Go4Expert - Message from client to server

Hi guys
My last post did not find any replies.I hope I have not offended anyone.I am new in this forum and this is my second post.I am trying to send a message from client to server and back from server to client.In the client window I get a null whereas in the server window the message is printed.
CLIENT

HTML Code:

import java.net.*;

import java.io.*;

import java.lang.*;

public class ClientSort

{

    public static void main(String a[])

    {

        Socket s=null;

        try

        {

            s=new Socket("localhost",6767);

            String mes,msg;

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

            PrintWriter out=new PrintWriter(new OutputStreamWriter(s.getOutputStream()),true);

            mes="Sent";

            out.println(mes);

            msg=in.readLine();

            System.out.println(msg);

        }

        catch(IOException e)

        {

            System.out.println(e.getMessage());

        }

        finally

        {

            try{

            s.close();}

            catch(IOException i){System.out.println(i.getMessage());}

        }

    }

}

SERVER

HTML Code:

import java.io.*;

import java.lang.*;

class ServerSort

{

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

    {

        ServerSocket ss=new ServerSocket(6767);

        Socket s=null;

        try

        {

            String mes,msg;

            s=ss.accept();

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

            PrintWriter out=new PrintWriter(new OutputStreamWriter(s.getOutputStream()));

            mes=in.readLine();

            System.out.println(mes);

            msg="Received";

            out.println(msg);

        }

        catch(IOException i)

        {

            System.out.println(i.getMessage());

        }

        finally

        {

            try{

            s.close();}

            catch(IOException io){System.out.println(io.getMessage());}

        }

    }

}

Kindly Help.Thanks