多線程- 鐵路售票學習實現runnablej接口

/**
     * @param args
     * 火車站賣票的例子用實現Runnable接口
     */
    public static void main(String[] args) {
        MyTicket mt = new MyTicket();
        new Thread(mt).start();
        new Thread(mt).start();
        new Thread(mt).start();
        new Thread(mt).start();

        /*Thread t1 = new Thread(mt);               //多次啓動一個線程是非法的
        t1.start();
        t1.start();
        t1.start();
        t1.start();*/
    }

}

class MyTicket implements Runnable {
    private int tickets = 100;
    @Override
    public void run() {
        while(true) {
            synchronized(this) {
                if(tickets <= 0) {
                    break;
                }
                try {
                    Thread.sleep(10);               //線程1睡,線程2睡,線程3睡,線程4睡
                } catch (InterruptedException e) {

                    e.printStackTrace();
                }
                System.out.println(Thread.currentThread().getName() + "...這是第" + tickets-- + "號票");
            }
        }
    }
}