What are some examples of using java.util.concurrent?

Can you give me some examples of using java.util.concurrent in Java?

Sure! The java.util.concurrent package provides various classes for concurrent programming. For example, you can use ExecutorService to manage a pool of threads.

How does ExecutorService work?

ExecutorService allows you to submit tasks for execution and manage their lifecycle. You can create a fixed thread pool or a cached thread pool depending on your needs.

What about using CountDownLatch?

CountDownLatch is useful for synchronizing threads. It allows one or more threads to wait until a set of operations in other threads completes.

Can you show me a code snippet for CountDownLatch?

Certainly! Here's a simple example:

CountDownLatch latch = new CountDownLatch(3);

Runnable task = () -> {
    // perform some work
    latch.countDown();
};

new Thread(task).start();
new Thread(task).start();
new Thread(task).start();

latch.await(); // Wait until all tasks are done