Overview ThreadLocal provides a mechanism where multiple threads can store their own data on a single ThreadLocal object. You can think of ThreadLocal as a bank. Multiple can go to a single bank, deposit, and withdraw money. It is also the analogy of this tutorial. ThreadLocal Quick Example Using the bank analogy, let’s say there … Read more
Overview CountDownLatch, as the name suggests, it provides a countdown mechanism. One use case of this class is to block the calling thread until all other specified threads are complete. It sounds vague, doesn’t it? Let’s consider one concrete example to boost our understanding. CountDownLatch Mechanism The principle of CountDownLatch is you create a countdown … Read more
Java provides mechanisms for threads to communicate with each other when working on common resources. This post gives you a concrete example of threads communication.
Single Thread Executor When you want to run a task, you can start a thread or you can use the Executors to create a single thread to run the task. Consider this block: when you run the code, the output is what the task does: However, you can see that the program didn’t stop (the … Read more