how will i know that a certain thread is finish?

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Java

i have 3 threads connecting to server..
how will i know if 1st thread is done?
so that i can start 2nd thread.

Posted 7-Aug-13 21:12pm

dinahgee1419

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Fredrik Bornander · Accepted Answer · 2013-08-07T21:21:00

You create some sort of syncRoot object, pass it to both thread 1 and thread 2. Thread 2 waits on the syncRoot (syncRoot.wait()), when thread 1 is done, it notifies on the syncRoot (syncRoot.notify()).

What's more interesting is why you want this, if the logic of thread 2 is always running at the end of thread 1, then it's better to not have them on separate threads but just use one thread instead. The whole point of threads in that they run in parallel, not in sequence.

Yes, there is a need to sometimes synchronize execution between threads but if the plan is to first run thread 1 to completion and then run thread 2 to completion then I think you're misusing your threads.

/Fredrik