2018-05-12 线程安全问题之售票问题

public class ThreadPoolDemo {
    public static void  main(String[] args){
        Ticket t=new Ticket();
        Thread t0=new Thread(t);
        Thread t1=new Thread(t);
        Thread t2=new Thread(t);
        t0.start();t1.start();t2.start();

    }
}

public class Ticket implements Runnable{
    private  int num=100;
    public void run(){
  while(true){
    if(num>0)
    {System.out.println("出票第   " +num--+"   张"+"\n"+"current Thread name"+Thread.currentThread().getName());}
        }
    }
}
current Thread nameThread-0
出票第   81   张
current Thread nameThread-0
出票第   80   张
current Thread nameThread-0
出票第   79   张
current Thread nameThread-2