What are the key features of an executor service?

What are the key features of an executor service?

An executor service in Java provides a higher level of abstraction for managing threads. Key features include thread pooling, task scheduling, and the ability to manage asynchronous tasks.

How does thread pooling work in an executor service?

Thread pooling allows the executor service to reuse a fixed number of threads for executing tasks, which improves performance by reducing the overhead of thread creation.

Can I schedule tasks to run at specific times?

Yes, you can schedule tasks using the ScheduledExecutorService, which allows you to run tasks after a delay or at fixed intervals.

What happens if a task fails?

If a task fails, the executor service can handle exceptions through the Future object returned when the task is submitted, allowing you to check for errors.

Are there any limitations to using an executor service?

Yes, limitations include potential resource exhaustion if too many tasks are submitted, and the need for careful management of task dependencies.