Dameon Threads??

[Swapnil Trivedi]

Hi Guys:
Can anybody please tell me the difference between a Daemon thread and User thread?? I checked the API it says that when u call setDaemon() method it will set the thread as Daemon thread...and JVM can shut down if the running threads are only Daemon threads...

I am searching a proper definition for it....Can anybody help me?? Thanks


Regards
Swapnil

[marc weber]

Originally posted by Swapnil Trivedi:
...JVM can shut down if the running threads are only Daemon threads...

That's basically it. A Daemon is a background process whose "completion" is not required.

[Naseem Khan]

Hi Swapnil,

Daemon thread is at the mercy of java runtime system. JVM can terminate at any time. Whereas user thread will always be successfully terminated.

If no user thread is running, then JVM can terminate daemon thread in between.

you can test above statments by setting a child thread as daemon thread before starting it.

You can see in that case when main terminates, child may terminate even without successful completion.

Whereas, if child thread is user thread, then child will definitely be completed even if main terminates before that.

Each child thread inherits its user status from main thread.

Regards

Naseem
[ June 30, 2006: Message edited by: Naseem Khan ]

[Swapnil Trivedi]

Thanks Naseem and Thanks Marc.


Regards
Swapnil