join()

[Vikrama Sanjeeva]

Hi guyz.I have not understand the function of join().A/C to me it waits to join the curently running thread to which it is joined.
If it is correct then plz. explain it
Bye.
Viki.
------------------
Count the flowers of ur garden,NOT the leafs which falls away!

[Jim Hall]

The join() method is an instance method of the Thread class. So when a running thread (A) calls the join method on another thread (B).It (A) waits until that thread (B) dies before it proceeds.

[Peter den Haan]

In practical terms:- say you need to do two time-consuming, I/O bound jobs A and B. Say they are implemented in two Runnable classes A and B. You need both to be finished in order to carry on.
Because they are I/O bound, it makes a lot of sense to run A and B in parallel using threads:

void doWork(A a, B b) {
   Thread bThread = new Thread(b);
   bThread.start();
   a.run();
   b.join();
}

The b.join() statement ensures that the doWork method will only return once both job A and job B have been finished.
- Peter