浅析Thread类run()和start()的区别

1 void    run()
2 If this thread was constructed using a separate Runnable run object, then that Runnable object‘s run method is called; otherwise, this method does nothing and returns.

1 void    start()
2 Causes this thread to begin execution; the Java Virtual Machine calls the run method of this thread.

 1 public class Main {
 2 
 3     public static void main(String[] args) {
 4         Mythread t = new Mythread();
 5         Thread thread1 = new Thread(t);
 6         Thread thread2 = new Thread(t);
 7         System.out.println("begin = " + System.currentTimeMillis());
 8         thread1.setName("我是线程1");
 9         thread2.setName("我是线程2");
10         thread1.run();
11         thread2.start();
12         System.out.println("end = " + System.currentTimeMillis());
13     }
14 }
15 
16 class Mythread extends Thread{
17     public void run() {
18         try {
19             System.out.println("threadName: "+this.currentThread().getName()+" begin");
20             Thread.sleep(1000);
21             System.out.println("threadName: "+this.currentThread().getName()+" end");
22         } catch (InterruptedException e) {
23             e.printStackTrace();
24         }
25     }
26 }