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一个简单多线程购票Demo

package thread;

public class Test02 {
        //定义初始票数
	public static int chepiao = 20;
	public static void main(String[] args) {
    
		Test02 t = new Test02();
		//匿名类创建线程
		Thread t1 = new Thread() {
			@Override
			public void run() {	
              //加同步锁
			 synchronized(Test02.class) {
                    //卖完就停止
				 if(chepiao<=0) {
						return;
					}
					// TODO Auto-generated method stub				
						try {
							t.jianfa();						
						} catch (InterruptedException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}														
					super.run();
				}				
			 }
				
		};
		
          //启动30个线程
		for(int i = 1;i<30;i++) {
			new Thread(t1).start();	

			
		}
	}
	
	//票数-1
	public synchronized   void jianfa() throws InterruptedException {
		chepiao--;	
		System.out.println("线程: "+Thread.currentThread().getName()+",抢到1张票,剩余"+chepiao+"张!");

	}
	
}

  


备注:在对变量进行共享线程时,最好使用AtomicInteger 进行自增或递减操作

  

posted @ 2019-08-14 13:27  xsiong  阅读(929)  评论(0编辑  收藏  举报
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