How to Wait in a servlet?

I want to use this command:
wait(500);
I have a simple HTTP servlet class (public class SleeperServlet extends HttpServlet) but I get this error:
java.lang.IllegalMonitorStateException: current thread not owner
Anyone know how to do what I want to do?
thanks for helping

The reason you are getting the IllegalMonitorStateException is because you are using the wait method without being in a synchornized code block. Either you should do as is suggested and use Thread.sleep() or you should place a synchronized code block around the wait method. I would not suggest this as it may cause problems in the server with multi-threading.

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