How do I cleanup a Thread after its run method finishes?

Question

What should be done with a Thread after its run() method finishes executing? Is there any cleanup needed for a Thread in Java?

Answer 1

Unless the thread's work has used some unmanaged resources (network streams, files etc) - in which case it should clean up after itself - there's nothing you need to do.

Note that holding a reference to the Thread object representing the thread won't keep the underlying OS thread alive.

Answer 2

一旦run方法完成它的执行，你不需要，线程退出

Answer 3

Generally cleaning up is done by the garbage collector. If the threads uses files/sockets you may need to close them. The best practice is to close resources in the top-level finally block in Thread::run .

Actually, you need to clean up your data, and not the thread.

Answer 4

Nopes. The thread would execute and die on its own and get garbage collected.

Answer 5

No its not necessary. When the thread exit its run method, the thread come into exit state itself.