Introduction to Java Executors Service - [ Advanced Java Multithreading Tutorial ]

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Java provides the Executor framework for implementing thread pools, which includes the Executor, ExecutorService, and ThreadPoolExecutor interfaces. The Executor framework provides a simple and efficient way to manage threads and execute tasks concurrently. With the use of a thread pool, you can optimize the performance of your application by reducing the time it takes to execute tasks and improving the overall throughput.

There are several types of thread pool available in Java. Here are some of the most common ones:

FixedThreadPool - A thread pool with a fixed number of threads. The number of threads is specified when the pool is created, and once created, the pool size does not change.

CachedThreadPool - A thread pool with a variable number of threads. If there are no threads available in the pool to handle a new task, a new thread will be created. If a thread has been idle for more than 60 seconds, it will be terminated and removed from the pool.

ScheduledThreadPool - A thread pool that can schedule tasks to be executed at a fixed rate or with a fixed delay. It is often used for periodic tasks, such as sending heartbeats or updating caches.

SingleThreadExecutor - A thread pool with a single thread. It is often used for tasks that need to be executed in order, or for tasks that modify shared state and need to be executed sequentially.

WorkStealingPool - A thread pool that allows tasks to be split into smaller tasks and executed in parallel. It is optimized for tasks that can be split into smaller sub-tasks and executed independently.

ForkJoinPool - A special-purpose thread pool designed for parallel programming using the fork-join pattern. It is optimized for recursive algorithms that can be split into smaller sub-problems.

Each type of thread pool has its own strengths and weaknesses, and the choice of which type to use depends on the specific requirements of the application.

Learn how to improve the performance of your Java applications using Executors with our comprehensive tutorial. In this video, we will introduce you to the basics of Executors and show you how to use them to manage threads in your Java programs. Whether you are a beginner or an experienced Java developer, this tutorial will provide you with the knowledge you need to take your Java applications to the next level.

This tutorial is created by Bikram Kishore Kundu.