Problem with Bufferedreader

[vaas45]

hey!
I am writing a simple gui chat application.The following code when run is producing an error i.e in.ready is always being false even when i send data to the server.tell me if there is any error.
server:

  try {
            ss = new ServerSocket(9999);
        } catch (IOException ex) {
            Logger.getLogger(connection.class.getName()).log(Level.SEVERE, null, ex);
        }

        try {
            clientsocket = ss.accept();
            System.out.println(ss);
            System.out.println(clientsocket);

        } catch (IOException ex) {
            Logger.getLogger(connection.class.getName()).log(Level.SEVERE, null, ex);
        }
        out = new PrintWriter(clientsocket.getOutputStream(), true);
        in = new BufferedReader(
				new InputStreamReader(
				clientsocket.getInputStream()));
        while(!in.ready())
        {    System.out.println(clientsocket);
            System.out.println("not ready");
        }
      in.readLine();

[kjkrum]

What you're doing is called polling. Polling is generally bad. It eats your CPU.

First of all, why do you care if the reader is ready? Why not just call readLine?

If you want to see that your program is working, consider this design pattern:

clientSocket.setSoTimeout(1000);
String line = null;
while(line == null) {
   try {
      line = in.readLine();
   }
   catch (SocketTimeoutException e) {
      System.err.println("Still waiting...");
      continue;
   }
}
// do something with your line

This will print "Still waiting..." approximately once per second until something is read from the socket.

Normally, you'd put the "do something" part inside the loop, and perform some other test to see if you should break out of the loop.