Executor Service API in Java

The ExecutorService API in Java is part of the java.util.concurrent package and provides a higher-level replacement for the traditional way of managing threads using the Thread class. It simplifies the task of managing and controlling the execution of multiple tasks concurrently. ExecutorService is often used for achieving concurrency and parallelism in Java applications.

Here’s a detailed explanation of the ExecutorService API along with examples:

Key Interfaces and Classes:

1. ExecutorService: The primary interface that represents an asynchronous execution service. It provides methods for managing and controlling the execution of tasks.
2. ThreadPoolExecutor: A class that implements the ExecutorService interface. It allows you to create and configure a thread pool for executing tasks.
3. Executors: A utility class that provides factory methods for creating different types of ExecutorService instances, such as fixed-size thread pools, cached thread pools, and scheduled thread pools.

Creating an ExecutorService:

You can create an ExecutorService using the Executors class. Here are some common ways to create ExecutorService instances:

• FixedThreadPool: A fixed-size thread pool where the…