Java的锁机制

<dependency>
    <groupId>org.openjdk.jol</groupId>
    <artifactId>jol-core</artifactId>
    <version>0.15</version>
    <scope>provided</scope>
</dependency>

package com.example.learningdemo.demo;

import org.openjdk.jol.info.ClassLayout;

/**
 * @author Anzepeng
 * @title: JolDemo
 * @projectName learningdemo
 * @description: TODO
 * @date 2021/4/7 0007下午 15:36
 */
public class JolDemo {

    public static void main(String[] args) {
        Object object = new Object();
        System.err.println(ClassLayout.parseInstance(object).toPrintable());

        synchronized (object) {
            System.err.println(ClassLayout.parseInstance(object).toPrintable());
        }
    }
}