What is the ScheduledExecutorService in Java?

What is the ScheduledExecutorService in Java?

The ScheduledExecutorService is part of the Java Executor framework that allows you to schedule tasks to run after a given delay or to execute periodically.

How do I create a ScheduledExecutorService instance?

You can create an instance using Executors.newScheduledThreadPool(int corePoolSize), where corePoolSize is the number of threads in the pool.

Can you give me an example of scheduling a task?

Sure! You can use the schedule method like this: scheduledExecutorService.schedule(() -> System.out.println("Task executed"), 5, TimeUnit.SECONDS); to run a task after 5 seconds.

What if I want to run a task repeatedly?

You can use the scheduleAtFixedRate method, like this: scheduledExecutorService.scheduleAtFixedRate(task, initialDelay, period, TimeUnit.SECONDS); to run the task at a fixed rate.