JBridge: Certification Question Of The Day

What are users most likely to see in their browser if they make a request to the following servlet code? (1 correct answer)

protected void doGet(HttpServletRequest request, HttpServletResponse response)
		throws ServletException, IOException {
  PrintWriter out = response.getWriter();
  out.write("Your non-error is about to be sent");
  response.sendError(HttpServletResponse.SC_OK);
}

The Answer

OK - this is a dumb question. Who would send an OK status code with the sendError() method? It doesn't make sense.
However, the outcome is mildly interesting for teaching purposes!
The correct answer is D, a blank web page results. Why should this be? When sendError() is used, the response body is cleared out. Usually, the response body would then be replaced with an HTML-formatted error message. However, there is not an HTML-formatted error message to correspond with an "OK" status - hence a blank page.