Correct syntax for a servlet that doesn't "return anything"?

Question

What is the correct way of terminating a servlet that doesn't return any data to the client?

The purpose of the servlet in question is to recive some data from an Ajax request and fire off a TCP message to a piece of hardware to tell it to change it's state.

Do you have to specify a response at all?

I've opted for getting a reference to the Output stream and closing it, is this correct?

Should I send back a "hey that worked" message?

Answer 1

If you just want to provide a "success" status just return HTTP code 200. You don't have to return any stream since you just want to say "OK".

public void doGet(...) {
    response.setStatus(HttpServletResponse.SC_OK); 
}