In-depth understanding of Java thread pool: Detailed explanation of the four creation methods
Introduction:
In multi-threaded programming, thread pool is a very commonly used technology. Thread pools can provide thread management and reuse, thereby reducing the cost of thread creation and destruction, and improving system performance and thread utilization. Java provides a powerful thread pool framework that can flexibly create and manage thread pools. This article will introduce the Java thread pool in depth, explain the four creation methods in detail, and give specific code examples.
1. What is a thread pool?
Thread pool is a technology that uniformly manages and reuses threads. It is a collection of threads. The threads in the thread pool can be used repeatedly without having to create and destroy threads every time. Threads in the thread pool can execute tasks submitted to it. When the task execution is completed, the thread will not exit, but will return to the thread pool again to wait for the arrival of the next task.
2. Advantages of Java thread pool
Java thread pool has the following advantages:
3. How to create Java thread pool
Java thread pool provides four creation methods, which are:
The four creation methods are explained in detail below. , and give specific code examples.
ExecutorService executorService = Executors.newFixedThreadPool(5);
ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor( 5, 10, 60L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
ExecutorService executorService = Executors.newFixedThreadPool(5);
ScheduledExecutorService scheduledExecutorService = Executors.newScheduledThreadPool(5);
4. Summary
This article provides an in-depth introduction to the concepts and advantages of Java thread pools, and explains in detail the four creation methods. By using the thread pool, you can improve system performance, reduce resource consumption, and speed up system response. Through different creation methods, we can create different types of thread pools and adjust and configure them according to actual needs.
Reference:
Code Example:
You The code examples provided with this article can be found at the link below.
[Code Example](https://github.com/example/ThreadPoolExamples)
Finally, I hope this article can help you deeply understand the Java thread pool and obtain reasonable application in multi-threaded programming. Thank you for reading!
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