1 package demo06;
 2
 3 //继承Thread类创建多线程
 4 public class ThreadDemo {
 5     public static void main(String[] args) throws Exception {
 6         SubThread st = new SubThread();
 7         //static sleep(long millis) 让当前正在执行的线程休眠millis毫秒
 8         Thread.sleep(2000);
 9         //设置线程名字
10         st.setName("run线程");
11         //static Thread currentThread() 返回正在执行的线程对象
12         System.out.println(Thread.currentThread().getName());
13         //String getName() 获取线程的名称
14         System.out.println(st.getName());
15         //开启线程
16         st.start();
17         for (int i = 0; i < 50; i++) {
18             System.out.println("main..."+i);
19         }
20
21
22         //匿名内部类创建线程
23         new Thread() {
24             public void run() {
25                 System.out.println("!!!");
26             }
27         }.start();
28
29         Runnable r = new Runnable() {
30             public void run() {
31                 System.out.println("###");
32             }
33         };
34         new Thread(r).start();
35     }
36 }

1 package demo06;
2
3 public class SubThread extends Thread {
4     public void run() {
5         for (int i = 0; i < 50; i++) {
6             System.out.println("run..."+i);
7         }
8     }
9 }

 1 package demo06;
 2
 3 //实现Runnable接口创建多线程
 4 public class RunnableDemo {
 5     public static void main(String[] args) {
 6         SubRunnable sr = new SubRunnable();
 7         Thread t = new Thread(sr);
 8         t.start();
 9         for (int i = 0; i < 50; i++) {
10             System.out.println("main..."+i);
11         }
12     }
13 }

1 package demo06;
2
3 public class SubRunnable implements Runnable {
4     public void run() {
5         for (int i = 0; i < 50; i++) {
6             System.out.println("run..."+i);
7         }
8     }
9 }