java线程

 1 //代码演示:
 2 public class Demo3 extends Thread{
 3      @Override
 4      public void run() {
 5           //run方法中要进行的操作
 6      }
 7      public static void main(String[] args) {
 8           Demo3 demo3 = new Demo3();
 9           demo3.start();
10      }
11 }

 1 //代码演示:
 2 //自定义类实现Runnable接口
 3 public class ThreadDemo implements Runnable {
 4      //创建线程的第一种方式：继承Thread类
 5      private int ticket =100;
 6      Object object = new Object();
 7      @Override
 8      public void run() {
 9           while(true) {
10               synchronized (object) {
11                    if (ticket>0) {
12                         try {
13                              Thread.sleep(10);
14                         } catch (Exception e) {
15                         }
16                         System.out.println(Thread.currentThread().getName()+"-----"+ticket--);
17                    }
18               }
19           }
20      }
21 }
22 //执行类，三个线程同时执行，模拟一个买票的过程
23 public class Test {
24           public static void main(String[] args) {
25               ThreadDemo threadDemo = new ThreadDemo();
26               Thread thread = new Thread(threadDemo);
27               Thread thread2 = new Thread(threadDemo);
28               Thread thread3 = new Thread(threadDemo);
29               thread.start();
30               thread2.start();
31               thread3.start();
32           }
33 }