死锁案例 synchronized不要一次性拿两个锁

package com.Java;

//死锁案例  互相持有对方的锁 并且想要拿到对方的资源
public class DeadLock {
    public static void main(String[] args) {
        Makeup makeup = new Makeup(0, "灰姑凉");
        Makeup makeup1 = new Makeup(1, "白雪公主");
        makeup.start();
        makeup1.start();
    }
}

class Lipstick {

}

class Mirror {

}

class Makeup extends Thread {
    static Lipstick lipstick = new Lipstick();
    static Mirror mirror = new Mirror();

    int choice;
    String girlName;

    public Makeup(int choice, String girlName) {
        this.choice = choice;
        this.girlName = girlName;
    }

    @Override
    public void run() {
        try {
            makeup();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    private void makeup() throws InterruptedException {
        if (choice == 0) {
            synchronized (mirror) { //拿镜子
                System.out.println(this.girlName + "拿到了镜子");
                Thread.sleep(2000);//不让他马上拿口红 模拟延时
                synchronized (lipstick) {
                    //拿完镜子再拿口红  现在口红在另一个人手上 另一个人想要镜子 但镜子在我手上 谁也不让
                    System.out.println(this.girlName + "拿到了口红");  
                    //解决方法 将这个锁拿出来就行
                }
            }
        } else {
            synchronized (lipstick) { //拿口红
                System.out.println(this.girlName + "拿到了口红");
                Thread.sleep(1000);
                synchronized (mirror) {
                    System.out.println(this.girlName + "拿到了镜子");
                }
            }
        }
    }
}