Thread method
What is the purpose of the wait(), notify(), and notifyAll() methods?View Answers
October 19, 2010 at 4:23 PM
Hi,
Here is the answer.
Java includes an elegant inter process communication mechanism via the wait( ), notify( ), and notifyAll( ) methods.
These methods are implemented as final methods in Object, so all classes have them. All three methods can be called only from within a synchronized method.
wait() tells the calling thread to give up the monitor and go to sleep until some other thread enters the same monitor and calls notify( ).
notify() wakes up the first thread that called wait( ) on the same object.
notifyAll() wakes up all the threads that called wait( ) on the same object. The highest priority thread will run first.
Thanks.
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