[Java multi-threaded thread pool associated]

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When to start Java multi-threaded, personal feeling directly start a thread for thread management is very negative, and then went to check out if there is a more convenient way to manage threads.
There really seems to search a bit, mainly these two libraries:

there are the following four kinds of thread pool types

newCachedThreadPool创建一个可缓存线程池，如果线程池长度超过处理需要，可灵活回收空闲线程，若无可回收，则新建线程。
newFixedThreadPool 创建一个定长线程池，可控制线程最大并发数，超出的线程会在队列中等待。
newScheduledThreadPool 创建一个定长线程池，支持定时及周期性任务执行。
newSingleThreadExecutor 创建一个单线程化的线程池，它只会用唯一的工作线程来执行任务，保证所有任务按照指定顺序(FIFO, LIFO, 优先级)执行。

You can create a thread pool by:

ExecutorService xxx = Executors.newCachedThreadPool();

You can also

xxx.isTerminated()

Thread determines whether the thread pool are terminated.

able to pass

xxx.shutdown()

Send a signal to terminate the process thread pool xxx, xxx later when all existing threads will not be affected, but can not go down after xxx execute in the new thread; after xxx threads all over, xxx.isTerminated () will be set to True.

xxx.execute(new Runnable())

Xxx will put a thread pool thread execution.

Reference:
https://www.cnblogs.com/ruiati/p/6134131.html