Java APIs

Hi. I am writing a multiplayer chekers game. But i have a problem with networking. I got this error:java.net.SocketException: Software caused connection abort: socket write error

	try {
			s = new Socket(this.getCodeBase().getHost(), DEFAULT_PORT);
			in = new DataInputStream(s.getInputStream());
			out = new DataOutputStream(s.getOutputStream());
                        listener = new StreamListener(in, button_array);

			// Let the user know we are ready
			this.showStatus("Connected to "
					+ s.getInetAddress().getHostName()
					+ ":" + s.getPort());
		}
		catch (IOException e) { this.showStatus(e.toString()); }

and the other part of the code is...

try{
                        out.writeInt(c);
                        d=in.readInt();
                        System.out.println("-----"+d);
                    }
                    catch (IOException e2) {System.out.println(e2.toString()); };

Where am i wrong??