CountDownLatch vs. Semaphore
How does semaphore work?
About semaphore class Using a semaphore Working with Binary Semaphore Result of variables using Semaphore Not able to understand or implement Semaphore Semaphore won't work What's the point of CountDownLatch in java? Difference in understanding between Semaphore counter and semaphore methods integer parameter? I'm using the CountDownLatch of JUC,but my app is blocked How do I "cancel" a CountDownLatch? What's the point of Semaphore.drainPermits()? Boolean Semaphore in Java How can I initialize this semaphore Semaphore simple sample Semaphore in Java Semaphore with queue Does CountDownLatch work in Android Service? Why is CountDownLatch source so complicated? Semaphore and thread issue How to implement a semaphore Some threads gets stuck at semaphore.aquire() (threads/semaphore/countdownlatch) Semaphore implementation in Java BlockingQueue vs Semaphore Do I need a semaphore for my thread in Android/Java? Flexible CountDownLatch? how to implement of semaphore CountDownLatch equivalent Why JUnit using CountDownLatch to implement FailOnTimeout What is the difference between the Semaphore of an OS and the Semaphore given by Java?