You should always close the output and input stream before you close the socket.

On the client side:

try {

output.close();

input.close();

MyClient.close();

}

catch (IOException e) {

System.out.println(e);

}

On the server side:

try {

output.close();

input.close();

serviceSocket.close();

MyService.close();

}

catch (IOException e) {

System.out.println(e);

}