マルチスレッド同期チケットのデモ

public class Test1 {
    
    
public static void main(String[] args) {

    TestThread te = new TestThread();
    Thread te1 = new Thread(te);
    Thread te2 = new Thread(te);
    Thread te3 = new Thread(te);
    Thread te4 = new Thread(te);
    Thread te5 = new Thread(te);

        te1.setName("1");
        te2.setName("2");
        te3.setName("3");
        te4.setName("4");
        te5.setName("5");
        te1.start();
        te2.start();
        te3.start();
        te4.start();
        te5.start();
    }
}   


class TestThread implements Runnable {
    
    

    int size=1000;
    public synchronized void sale(){
         if(size>0){
             size--;
             System.out.println(Thread.currentThread().getName()+"正在卖票，还剩"+size+"张"); 
         }else if(size==0){
             System.out.println("票已售完！");
         }
        }

    public void run(){

        while(size>0){

        sale();

        }
    }
}