What are the differences between Future and ExecutorService in Java?

What are the differences between Future and ExecutorService in Java?

Future is an interface that represents the result of an asynchronous computation, while ExecutorService is an interface that provides methods to manage and control thread execution.

Can you explain how to use ExecutorService to submit tasks?

Sure! You can use the submit() method of ExecutorService to submit a Callable or Runnable task, which returns a Future object.

What happens if I try to get the result of a Future that hasn't completed?

If you call get() on a Future that hasn't completed, it will block until the result is available or an exception is thrown.

Are there any advantages to using ExecutorService over creating threads manually?

Yes, ExecutorService manages a pool of threads, which can improve performance and resource management compared to manually creating threads.