CyclicBarrier and CountDownLatch, both required to handle multi-threaded programming. But there are differences between them as shown below:  CyclicBarrier: It is a tool to synchronize the processing of threads using some algorithm. This allows a set of threads to wait for each other until they reach a common execution point or breakpoints and then resume execution. The same CyclicBarrier can be reused, even if the barrier is broken by placing it.  CountDownLatch: This is a tool that allows main threads to wait for other threads to perform mandatory operations and finish them. Simply put, it ensures that a thread waits for another thread to finish before executing. The same CountDownLatch cannot be reused when the count reaches zero.