while (true)
       {
             new  Server(i,server_socket.accept());
            i++;
             byte [] buf=  new   byte  [ 15 ];
             int  leng=System.in.read(buf);
            String msg= new  String(buf).substring( 0 ,leng);
                StringTokenizer str= new  StringTokenizer(msg,"\r\n");
                String msg1="";
                 while (str.hasMoreTokens())
                    msg1=msg1+str.nextToken();
                 if  (msg1.equalsIgnoreCase("quit"))
                     break ;

       }

   }

    public  Server( int  counter, Socket s)
   {
         this .counter=counter;
         this .socket=s;
        start();

   }

    public   void  run()
   {
             try 
            {
                InputStream is = socket.getInputStream();
                OutputStream os = socket.getOutputStream();

                 byte  buf[] =  new   byte [ 512 ];
                 int  r = is.read(buf);
                String msg = new  String(buf).substring( 0 ,r);
                System.out.println("From "+counter+". message->  "+msg);
                String data =  new  String(buf,  0 , r);
                data = ""+counter+": "+"\n"+data;
                os.write(data.getBytes());
                socket.close();

            }