This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
Can't you use interrupt() method? Having stopWork() is great but what if this is not ur thread(does not have the method) or the thread is in sleep/wait mode, or waiting for IO (for example Socket s =server.accept())