java 死锁代码

package jvm;

/**
 * @author devin
 * @version 1.0.2
 * @date 2021-01-17 14:17
 */
import java.util.concurrent.TimeUnit;

/**
 * 资源类
 */
class HoldLockThread implements Runnable{

    private String lockA;
    private String lockB;

    // 持有自己的锁，还想得到别人的锁

    public HoldLockThread(String lockA, String lockB) {
        this.lockA = lockA;
        this.lockB = lockB;
    }


    @Override
    public void run() {
        synchronized (lockA) {
            System.out.println(Thread.currentThread().getName() + "\t 自己持有" + lockA + "\t 尝试获取：" + lockB);

            try {
                TimeUnit.SECONDS.sleep(2);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            synchronized (lockB) {
                System.out.println(Thread.currentThread().getName() + "\t 自己持有" + lockB + "\t 尝试获取：" + lockA);
            }
        }
    }
}