Java 死锁案例

死锁案例

package me.qianlv;

import java.util.concurrent.TimeUnit;

/**
 * 死锁的案例
 *
 * @author xiaoshu
 */
public class DeadLockDemo {
    private static String A = "A";
    private static String B = "B";

    public static void main(String[] args) {
        new DeadLockDemo().deadLock();
    }

    private void deadLock() {
        Thread t1 = new Thread(() -> {
            synchronized (A) {
                try {
                    TimeUnit.SECONDS.sleep(2);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

                synchronized (B) {
                    System.out.println("1");
                }
            }
        });

        Thread t2 = new Thread(() -> {
            synchronized (B) {
                try {
                    TimeUnit.SECONDS.sleep(2);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

                synchronized (A) {
                    System.out.println("2");
                }
            }
        });
        t1.start();
        t2.start();
    }
}

通过jstack命令查看栈内容

jstatck {pid}