缓存线程池如何重用现有线程 [英] How Does a Cached Thread Pool Reuse Existing Threads

问题描述

我刚刚开始查看Java的 Executors 类和 newCachedThreadPool（）方法。根据API，生成的线程池重用现有的 Thread 对象来执行新任务。

I've just started looking at Java's Executors class and the newCachedThreadPool( ) method. According to the API, the resulting thread pool reuses existing Thread objects for new tasks.

我有点很困惑这是如何实现的，因为我找不到 Thread API中的任何方法，它允许你设置现有 Thread object。

I'm a bit puzzled how this is implemented because I couldn't find any method in the Thread API that lets you set the behaviour of an existing Thread object.

例如，您可以从以下位置创建 new Thread 一个 Runnable 对象，它使 Thread 调用 Runnable 的 run（）方法。但是， Thread API中没有setter方法，它将 Runnable 作为参数。

For example, you can create a new Thread from a Runnable object, which makes the Thread call the Runnable's run( ) method. However, there is no setter method in the Thread API that takes a Runnable as an argument.

我很感激任何指针。

推荐答案

执行官在后台为你做一切。是的，它仅使用现有的线程API。

Executors does everything for you in the background. And yes it uses the existing thread API only.

下面的链接包含使用Thread类和Collection API实现的线程池的示例实现： http://www.ibm.com/developerworks/library/j-jtp0730/index.html

Below link has sample implementation of Thread pool implemented using Thread class and Collection API: http://www.ibm.com/developerworks/library/j-jtp0730/index.html

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