3、并发产生的问题

经典案例买票

public class TestTicket implements Runnable{
    // 票数量
    private int ticketCount = 10;

    @Override
    public void run() {
        while (true){
            if(ticketCount<=0){
                break;
            }
            try {
                // 模拟延时操作
                Thread.sleep(200);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(Thread.currentThread().getName()+"买了"+ticketCount-- +"号票");
        }
    }

    public static void main(String[] args) {
        TestTicket testTicket = new TestTicket();

        new Thread(testTicket,"张三").start();
        new Thread(testTicket,"李四").start();
        new Thread(testTicket,"黄牛党").start();
    }
}

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多个线程操作同一个资源时出现不安全的现象，如何解决见后续