[Multithreading]wait and Notify

Communication between Threads uses the Wait/notify method to implement inter-thread communication. Both of these methods are methods of the object class, meaning that all Java objects provide both methods. 1, wait and notify must match synchronized key (or sync Lock) use 2, wait method to release the lock (Wait), notify method does not release the lock (notification) 3, Wait and notify implement a non-real-time notification problem with thread communication (for notify only notification does not release the lock)

Java.util.concurrent.CountDownLatch enables real-time notifications

[Multithreading]wait and Notify