This week's book giveaway is in the Mac OS forum. We're giving away four copies of a choice of "Take Control of Upgrading to Yosemite" or "Take Control of Automating Your Mac" and have Joe Kissell on-line! See this thread for details.
The java.lang.IllegalStateException: Response already committed
exception is thrown by the HttpServletResponse interface during the response
generation process . If the response has been
committed, you cannot execute any method that is related to
HttpServletResponse object modification. For example, if you have written
something in the response buffer, you cannot forward a page using the
RequestDispacher interface methods.