How do I use ScheduledExecutorService in Java?

What is ScheduledExecutorService in Java?

ScheduledExecutorService is an interface 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 it using Executors.newScheduledThreadPool(int corePoolSize) method, specifying the number of threads.

Can you show me an example of scheduling a task?

Sure! You can use the schedule method like this: executor.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: executor.scheduleAtFixedRate(task, initialDelay, period, TimeUnit.SECONDS); to run it at fixed intervals.