CODEWITHSUNDEEP
javamultithreading
Dan Rosenstark
Dan Rosenstark

Reputation: 69747

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 me 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...

Upvotes: 4

Views: 369

Answers (1)

Jon Skeet
Jon Skeet

Reputation: 1499800

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.

Upvotes: 8

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