How do I use ExecutorService in Java?

What is ExecutorService in Java?

ExecutorService is an interface in Java that provides a higher-level replacement for managing threads. It simplifies concurrent programming by managing a pool of threads.

How do I create an ExecutorService?

You can create an ExecutorService using the Executors factory class. For example, use Executors.newFixedThreadPool(int nThreads) to create a thread pool with a fixed number of threads.

Can you show me an example of submitting tasks?

Sure! You can submit tasks using the submit() method. For example: executorService.submit(() -> { /* task code */ });.

How do I properly shut down the ExecutorService?

You should call shutdown() to stop accepting new tasks and awaitTermination() to wait for existing tasks to finish.