Hello, readers, and welcome to yet another blog in the Java Concurrency series. Today, we are going to look at the CountDownLatch class in Java, what it is, and how to use it. So, let's dive straight into it.
CountDownLatch in Java
Sometimes, we have a need to start our application only when a particular set of tasks are complete. These tasks might be running in parallel and getting completed together or at different times. Then, how do we tell our other threads that all the tasks are completed? How do we keep track of which tasks are complete and which are not? CountDownLatch is a class just for that.