Query on join method

[raja singh kumar]

Hi All,

From the official documentation of Java

"If t is a Thread object whose thread is currently executing,
t.join();
causes the current thread to pause execution until t's thread terminates."

My question is it possible to get into a deadlock situation if t is the currently executing thread and we call a join on thread t? Please clarify with an example, if required.

[Paweł Baczyński]

Of course it is.
If thread a calls b.join() and thread b calls a.join() they will both wait for each other.

There is even simpler case. Try calling Thread.currentThread().join() and see what happens.