实现Runnable与扩展线程 [英] Implementing Runnable vs. extending Thread

问题描述

为什么实现Runnable比从Thread类扩展更好？

Why is implementing Runnable a better option than extending from Thread class?

推荐答案

这样你解耦执行中的计算（什么）（时间和/或如何）。

This way you decouple the computation (the what) from the execution (the when and/or the how).

使用 Runnable 或 Callable ，您可以举例说明提交许多工作/计算到 Executor ，这将负责安排这些东西。以下是 ExecutorService ：

With Runnable or Callable, you can for instance submit many work/computation to an Executor which will take care to schedule the stuffs. Here is an excerpt form ExecutorService:

pool = Executors.newFixedThreadPool(poolSize);
...
pool.execute(new Handler(serverSocket.accept()));
...
class Handler implements Runnable {
    ...
 }

使用 Runnable / Callable 为您提供更大的灵活性，直接使用Threads。

Using Runnable/Callable gives you more flexibility that using Threads directly.

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