创建线程的方式-优快云博客

本文介绍了在Java中创建新线程的两种主要方法：一种是通过继承Thread类并覆盖run方法；另一种是实现Runnable接口，并在创建Thread实例时传入该Runnable对象。文章通过具体示例展示了这两种方法的具体实现。

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There are two ways to create a new thread of execution.

One is to declare a class to be a subclass of Thread. This subclass should override the run method of class Thread. An instance of the subclass can then be allocated and started.

class PrimeThread extends Thread {
         long minPrime;
         PrimeThread(long minPrime) {
             this.minPrime = minPrime;
         }

         public void run() {
             // compute primes larger than minPrime
             . . .
         }
     }

The following code would then create a thread and start it running:

     PrimeThread p = new PrimeThread(143);
     p.start();

The other way to create a thread is to declare a class that implements the Runnable interface. That class then implements the run method. An instance of the class can then be allocated, passed as an argument when creating Thread, and started. The same example in this other style looks like the following:

     class PrimeRun implements Runnable {
         long minPrime;
         PrimeRun(long minPrime) {
             this.minPrime = minPrime;
         }
 
         public void run() {
             // compute primes larger than minPrime
              . . .
         }
     }

The following code would then create a thread and start it running:

     PrimeRun p = new PrimeRun(143);
     new Thread(p).start();
其实,JDK中的Thread也不过是由sun自已实现 Runnable接口的类而已.public class Thread extends Object implements Runnable