线程安全方式2Runnable---同步代码块

/**
 * Runnable方式线程安全---同步代码块
 *
 * @Author: ITYW
 * @Create 2020 - 10 - 26 - 18:47
 */
public class RunnableSecurity {
    public static void main(String[] args) {
        //创建一个对象即可
        Runnable_Security runnable_security = new Runnable_Security();

        Thread t1 = new Thread(runnable_security);
        Thread t2 = new Thread(runnable_security);
        Thread t3 = new Thread(runnable_security);

        t1.setName("window1");
        t2.setName("window2");
        t3.setName("window3");

        t1.start();
        t2.start();
        t3.start();

    }
}
class Runnable_Security implements Runnable{
    private static int ticket = 100;
    @Override
    public void run() {
        while (true){
            synchronized(this){
                if (ticket > 0){
                    try {
                        Thread.sleep(100);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(Thread.currentThread().getName()+"卖出了第"+ticket+"张");
                    ticket--;
                }else {
                    break;
                }
            }
        }
    }
}