当前位置:网站首页>双亲委派模型【理解】
双亲委派模型【理解】
2022-04-23 02:23:00 【CodeEggs】
-
双亲委派模型定义:
- 当一个类加载器收到类加载任务时,会先交给自己的父加载器去完成,若父类不能加载,则继续向上,最终到达顶点(BootstrapClassLoader),在此过程中,若已有加载,则返回。
- 到达顶点则需要向下查找,子类看是否能加载,若能加载则返回,否则到起点,报错。
-
首先需要知道类加载器有三个:
- 1、BootstrapClassLoader(顶级类加载器、启动类加载器)
- 2、ExtentionClassLoader(拓展类加载器)
- 3、AppClassLoader(应用程序类加载器)
- 建议硬背有三个加载器,
1 --> 2 --> 3表示爷爷 --> 爸爸 --> 我 - 我们自己写的类和引入的JAR包通常从这个加载器开始
- 建议硬背有三个加载器,

版权声明
本文为[CodeEggs]所创,转载请带上原文链接,感谢
https://blog.csdn.net/weixin_45787528/article/details/124284937
边栏推荐
- Summary of I / O knowledge points
- Tp6 Alibaba cloud SMS window reports curl error 60: SSL certificate problem: unable to get local issuer certificate
- [chrome extender] content_ Cross domain problem of script
- Open3d point cloud processing
- Is the sinking coffee industry a false prosperity or the eve of a broken situation?
- 全局、独享、局部路由守卫
- 005_redis_set集合
- On LAN
- WordPress calls the specified page content. 2 get_ children()
- 手写内存池以及原理代码分析【C语言】
猜你喜欢

Redis memory recycling strategy

Chinese scientists reveal a new mechanism for breaking through the bottleneck of rice yield

How to call out services in idea and display the startup class in services

day18--栈队列

全局、独享、局部路由守卫

手写内存池以及原理代码分析【C语言】
![[untitled]](/img/60/421cda552055664357af47d1a956af.png)
[untitled]

SQL server2019无法下载所需文件,这可能表示安装程序的版本不再受支持,怎么办了

Find the largest number of two-dimensional arrays

011_RedisTemplate操作Hash
随机推荐
Talk about biology live broadcast: Dr. Wang Ziyuan, a lake view biology, exploring hepatitis B with gene therapy
校园转转二手市场源码
PTA: praise the crazy devil
openstack 服务的启动
SQL server2019无法下载所需文件,这可能表示安装程序的版本不再受支持,怎么办了
Heap overflow of kernel PWN basic tutorial
Why is one plus one equal to two
【2019-CVPR-3D人体姿态估计】Fast and Robust Multi-Person 3D Pose Estimation from Multiple Views
Tp6 Alibaba cloud SMS window reports curl error 60: SSL certificate problem: unable to get local issuer certificate
类初始化和实例初始化面试题
006_ redis_ Jedis quick start
LeetCode 349. Intersection of two arrays (simple, array) Day12
Real math problems in 1958 college entrance examination
This is how the power circuit is designed
010_ StringRedisTemplate
Go language ⌈ mutex and state coordination ⌋
wordpress 调用指定页面内容详解2 get_children()
SO库依赖问题
Numerical remapping method (remap)
[chrome extender] content_ Cross domain problem of script