What are the advantages of using an ExecutorService?

Question

What is the advantage of using ExecutorService over running threads passing a Runnable into the Thread constructor?

Answer 1

Creating a large number of threads with no restriction to the maximum threshold can cause application to run out of heap memory. Because of that creating a ThreadPool is much better solution. Using ThreadPool we can limit the number of threads can be pooled and reused.

Executors framework facilitate process of creating Thread pools in java. Executors class provide simple implementation of ExecutorService using ThreadPoolExecutor.

Source:

What is Executors Framework