Java CyclicBarrier, CountDownLatch and wait () What is the difference?

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1. Problem

• CyclicBarrier, CountDownLatch and wait () What is the difference?

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2. Answers

• wait(): Object class method is provided that allows the current thread to stop executing, and release the resources associated with the conversion from a running thread state to wait state;
• CyclicBarrier(int n, Runnable barrierAction): CyclicBarrier class constructor is used when n threads have reached the barrier, the following thread execution priority barrierAction, then other threads to execute, easy to handle more complex business scenario;
• CountDownLatch(int count): Is the class constructor CountDownLatch, refers to half a thread execution is interrupted, wait for the end of the other n threads running in order to continue the thread of the code;
• About using wait () method, see: the Java thread interaction ;
• CountDownLatch and on the use of CyclicBarrier, see: the Java and contract ;