Thread Suicide on Shutdown? stopping java.util.Timer instance

I have a java.util.Timer running at a fixed interval. I have added a Runtime#addShutdownHook and it shuts down when the VM ends normally or abnormally. However, it keeps the VM alive when a main terminates, unless I insist by doing a System.exit in the main. Is there any way for m开发者_StackOverflowe to check if I'm the last Thread standing, or some other way to avoid altering a main that would exit normally on finish?

_{Note: I know a lot of people believe that java.util.Timer is deprecated (it's not), but unless your alternative helps me solve this problem...}

Create the timer using one of the constructor overloads which allows you to specify whether to use a daemon thread: pass true in as the argument, so that it will run on a daemon thread, which won't prevent the VM from shutting down.