die Sender-Klasse:

public void send(final int arg, final String toSend) throws IOException {
    try {
      out.write(arg);

      Thread.sleep(100);

      out.write(toSend);

      Thread.sleep(100);
    }
    catch(InterruptedException err) {

    }
  }

Die Receiver-Klasse:

private String receive() {
    try {
      return in.readLine();
    }
    catch(SocketException err){
      return err.toString() + " (Verbindung zum Server getrennt)";
    }
    catch(Exception err) {
      return err.toString();
    }
  }