Java Equivalent of .NET's ManualResetEvent and WaitHandle

Question

I would like to know if Java provides an equivalent of .NET\'s classes of ManualResetEvent and WaitHandle, as I would like to write code that blocks for a given timeout unle

Answer 1

From: http://www.experts-exchange.com/Programming/Languages/Java/Q_22076798.html

Hi, you can achieve synchronization using the java.util.concurrent.Semaphore class (use 0 permit).

http://java.sun.com/j2se/1.5.0/docs/api/java/util/concurrent/Semaphore.html

Example below shows you how to solve the first sync problem, the other will be similar:

import java.util.concurrent.Semaphore;

class ScalesCommunication {

   private static Semaphore sem = new Semaphore(0);

   // called by thread 1
   void readLoop() {
      //...

      //after connection established, release semaphore (value incremented by 1)
      sem.release();
   }

   // called by thread 2
   String sendCommand(String command) {

       sem.acquire(); // thread waits here if sem value == 0

       // at this point connection is established
       //...
   }
}