Java threads: wait and notify methods

Question

I have a thread that calls the wait method and can only be awoken when the notify method called from some other class:

 class Threa         


        

Answer 1

You could loop and wait until the total has been computed :

synchronized(b) {
   while (total == 0) {
       b.wait();
   }
}

You could also use a higher-level abstraction like a CountDownLatch.