在Java中创建新线程有多少种方法？ [英] How many ways are for creating a new thread in Java?

问题描述

实际上，除了扩展Thread类和实现Runnable接口之外还有哪些其他方法？

Actually, what other ways are available apart from extending the Thread class and implementing the Runnable interface?

推荐答案

确切地说一种在Java中创建新线程的方法，即实例化 java.lang.Thread （实际运行该线程你还需要调用 start（））。

There is exactly one way to create a new thread in Java and that is to instantiate java.lang.Thread (to actually run that thread you also need to call start()).

在Java代码中创建线程的其他所有内容都会回到封面后面的这一方面（例如 ThreadFactory 实现将实例化线程某些时候的对象，......）。

Everything else that creates threads in Java code falls back to this one way behind the cover (e.g. a ThreadFactory implementation will instantiate Thread objects at some point, ...).

指定运行哪些代码有两种不同的方法在该线程中：

• 实现接口 java.lang.Runnable 并将实现它的类的实例传递给 Thread 构造函数。


• 扩展线程本身并覆盖其 run（） 方法。

• Implement the interface java.lang.Runnable and pass an instance of the class implementing it to the Thread constructor.
• Extend Thread itself and override its run() method.

第一种方法（实现 Runnable ）通常被认为是更正确的方法，因为你通常不会创建新的善待线程，但只是想运行一些代码（即一个专用线程中的 Runnable ）。

The first approach (implementing Runnable) is usually considered the more correct approach because you don't usually create a new "kind" of Thread, but simply want to run some code (i.e. a Runnable) in a dedicated thread.

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