Java面试知识点汇总

╰+攻爆jí腚メ 2021-09-23 00:26 498阅读 0赞

> 为了更加美好的明天而努力吧

> 由于我不断补充，现在知识点已经比较庞杂，很多人私信我，说那一篇全是知识点太过庞杂，问我有没有整合的。正好春招和秋招在即，我花费了几个月的时间，把知识点整合成不同的模块并针对不同的知识点以及结合本人自己的面试经历，整合出这篇java面试全攻略：[史上最全！20/21届春招/秋招 实习/校招 JAVA面试全攻略！复习回顾这一篇就够了！][20_21_ _ JAVA]。希望对大家有所帮助！

最近在系统回顾Java知识，把看过的知识点汇总一下以便查漏补缺：

### 文章目录 ###

*   *   *  java基础——基础知识
         *  java基础——集合框架/泛型/容器
         *  java基础——多线程
         *  java基础——框架基础：注解/反射/流行框架
         *  java基础——面向对象：继承/多态/封装
         *  java基础——设计模式
         *  java基础——JVM/类加载
         *  java基础——I/O
         *  网络编程和计网
         *  数据库
         *  操作系统
         *  数据结构

### java基础——基础知识 ###

[Java面试知识点（零）Java零碎知识点][Java_Java]

[Java面试知识点（三）Java中的private、protected和public][Java_Java_private_protected_public]

[ Java面试知识点（五）String 和 char 的对比][Java_String _ char]

[Java面试知识点（十一）关于integer和string的==、equals判断][Java_integer_string_equals]

[Java面试知识点（十五）java中的异常（exception、throw、throws、try···catch）][Java_java_exception_throw_throws_try_catch]

[Java面试知识点（三十四）string、stringbuilder和stringbuffer][Java_string_stringbuilder_stringbuffer]

[Java面试知识点（十七）final、static、abstract 区别与联系][Java_final_static_abstract]

[Java面试知识点（二十一）数组的静态初始化和动态初始化][Java]

[Java面试知识点（六十八）全局变量和局部变量][Java 1]

[Java面试知识点（三十五）深拷贝和浅拷贝][Java 2]

[Java面试知识点（六十九）值传递和引用传递][Java 3]

[Java面试知识点（八十八）Java中的字符常量池 ][Java_Java_]

[Java面试知识点（十四）java文件中的同级类、内部类、匿名内部类][Java_java]

[Java面试知识点（二十三）抽象类和接口][Java 4]

[Java面试知识点（二十四）内部类][Java 5]

[Java面试知识点（二十五）内联函数][Java 6]

[Java面试知识点（二十九）Java枚举类enum][Java_Java_enum]

[ Java基础概念 ][Java_]

[Java常见关键字 ][Java_ 1]

[Java面向对象概念全解 ][Java_ 2]

[反射与代理模式 ][Link 1]

[Java对象克隆详解 ][Java_ 3]

[Java异常详解 ][Java_ 4]

--------------------

### java基础——集合框架/泛型/容器 ###

[Java面试知识点（二十七）Java中容器的概念][Java_Java 1]

[Java面试知识点（二十八）Java集合框架][Java_Java 2]

[Java面试知识点（四十八）集合框架详解][Java 7]

[Java面试知识点（五十）常见Java集合框架面试问题集锦][Java_Java 3]

[Java面试知识点（一）hashmap、hashtable和hashset][Java_hashmap_hashtable_hashset]

[Java面试知识点（一）（补充）hashmap深度理解][Java_hashmap]

[Java面试知识点（四十六）HashMap源码解析][Java_HashMap]

[ hashmap 的扩容和树形化 ][hashmap _]

[Java面试知识点（一）（补充）ConcurrentHashMap深度理解][Java_ConcurrentHashMap]

[ConcurrentHashMap线程安全的实现原理 ][ConcurrentHashMap_]

[Java面试知识点（一）（补充）如何让HashMap线程安全][Java_HashMap 1]

[Java面试知识点（十）ArrayList 和面向接口编程][Java_ArrayList]

[Java面试知识点（二十六）迭代器iterator][Java_iterator]

[集合（List、Set）遍历和Iterator迭代器 ][List_Set_Iterator_]

[Java面试知识点（四十九）Map集合 的遍历][Java_Map_]

[HashSet/HashMap、TreeSet/TreeMap、LinkedHashSet/LinkedHashMap 区别][HashSet_HashMap_TreeSet_TreeMap_LinkedHashSet_LinkedHashMap]

--------------------

### java基础——多线程 ###

[多线程基本概念][Link 2]

[多线程启动方式][Link 3]

[前台线程和后台线程、用户线程和守护线程][Link 4]

[Java之sleep () 和 wait ()][Java_sleep _ _ wait]

[实现线程自定义顺序执行——join()解析][join]

[Java 多线程关键字 synchronized和lock][Java _ synchronized_lock]

[深入理解synchronized][synchronized]

[atomic 包底层实现原理 ][atomic _]

[synchronized的底层实现 ][synchronized_]

[ Lock底层原理 ][Lock_]

[多线程不安全的底层原因以及两种加锁方式的区别 ][Link 5]

[Java多线程中 的各种锁][Java_ 5]

[Java多线程中 的各种锁（补充）][Java_ 6]

[阻塞队列BlockingQueue][BlockingQueue]

[生产者-消费者问题][-]

[Java线程池 ][Java_ 7]

[Java线程池进阶][Java 8]

[Java线程池面试题 ][Java_ 8]

[ Java面试知识点（八十七）Java中的ThreadLocal ][Java_Java_ThreadLocal]

--------------------

### java基础——框架基础：注解/反射/流行框架 ###

[Java面试知识点（七）优化 Hibernate 所鼓励的 7 大措施][Java_ Hibernate _ 7]

[Java面试知识点（八）序列化和反序列化][Java 9]

[Java面试知识点（三十三）java中池的概念][Java_java 1]

[Java面试知识点（六十三）Java反射][Java_Java 4]

[Java面试知识点（六十四）Java注解(上)——概念篇][Java_Java 5]

[ Java面试知识点（六十五）Java注解(下)——实战篇 ][Java_Java_ 1]

[Java面试知识点（八十一）Spring的IOC和AOP概念和实现原理 ][Java_Spring_IOC_AOP_]

[ Java面试知识点（八十二）仿照 Spring 实现简单的 IOC ][Java_ Spring _ IOC]

[Java面试知识点（八十三）仿照 Spring 实现简单的 AOP ][Java_ Spring _ AOP]

[Java面试知识点（八十四）Spring bean 的生命流程 ][Java_Spring bean _]

[Java面试知识点（八十五）仿写Spring 进阶之 AOP和IOC协作 ][Java_Spring _ AOP_IOC_]

### java基础——面向对象：继承/多态/封装 ###

[Java面试知识点（十二）重写与重载][Java 10]

[Java面试知识点（十六）单继承和多继承][Java 11]

[Java面试知识点（十九）多态][Java 12]

[Java面试知识点（三十）super和this关键字][Java_super_this]

### java基础——设计模式 ###

[Java面试知识点（二十）单例模式之懒汉式和饿汉式][Java 13]

[Java设计模式（一）装饰者模式][Java 14]

[Java面试知识点（七十五）设计模式之观察者模式 ][Java_ 9]

[Java面试知识点（七十八）设计模式之工厂模式 ][Java_ 10]

[Java面试知识点（七十九）设计模式之代理模式（上） ][Java_ 11]

[Java面试知识点（八十）设计模式之代理模式（下）][Java 15]

[Java设计模式汇总 ][Java_ 12]

### java基础——JVM/类加载 ###

[Java面试知识点（四）初始化执行代码顺序（包含static块和构造块）以及类方法和实例方法][Java_static]

[Java面试知识点（三十二）JVM内存结构][Java_JVM]

[Java面试知识点（九十）JVM组成部分 ][Java_JVM_]

[Java面试知识点（三十六）类加载机制][Java 16]

[Java面试知识点（五十七）类加载器][Java 17]

[Java类加载器之间的关系 ][Java_ 13]

[Java面试知识点（五十一）虚拟机中的对象][Java 18]

[Java面试知识点（五十二）虚拟机 分配内存][Java_ 14]

[ Java面试知识点（九十一）Java中的引用类型 ][Java_Java_ 2]

[JVM如何判断是否回收对象 ][JVM_]

[Java面试知识点（五十三）垃圾回收算法][Java 19]

[Java面试知识点（五十四）JVM运行时数据区域][Java_JVM 1]

[Java面试知识点（五十五）JVM垃圾收集器][Java_JVM 2]

[Java面试知识点（五十六）JVM垃圾回收 常见面试题][Java_JVM_ 1]

[ Java面试知识点（八十九）Java中的内存泄露和内存溢出 ][Java_Java_ 3]

### java基础——I/O ###

[Java面试知识点（四十）I/O 基本概念][Java_I_O]

[Java面试知识点（四十一）I/O 模型 ——阻塞、非阻塞、多路复用、异步][Java_I_O _]

[ Java面试知识点（八十六）JAVA中 BIO 与 NIO、AIO ][Java_JAVA_ BIO _ NIO_AIO]

### 网络编程和计网 ###

[Java面试知识点（二）Java中的原码、反码和补码][Java_Java 6]

[Java面试知识点（六）forward 和 redirect][Java_forward _ redirect]

[Java面试知识点（九）URL的组成][Java_URL]

[计算机网络基础（一）通信的基础——IP、DNS、MAC地址][IP_DNS_MAC]

[计算机网络基础（二）关于ip地址的理解][ip]

[计算机网络基础（三）GFW（中国防火长城）工作原理][GFW]

[Java面试知识点（五十八）OSI七层模型和 五层体系结构 ][Java_OSI_ _]

[ Java面试知识点（五十九）TCP 三次握手和四次挥手协议 ][Java_TCP _]

[Java面试知识点（六十）TCP协议 （可靠保证、TCP、UDP、拥塞、ARQ）][Java_TCP_ _TCP_UDP_ARQ]

[Java面试知识点（六十一）HTTP 和 HTTPS][Java_HTTP _ HTTPS]

[Http/1.0、Http/1.1、Http2 ][Http_1.0_Http_1.1_Http2]

[Https 加密过程详解 ][Https _]

[HTTP协议的补充（POST、GET请求方法、幂等性） ][HTTP_POST_GET_]

[网络攻击（XSS、CSRF）详解 ][XSS_CSRF_]

[DDoS 攻击详解 ][DDoS _]

[ SQL注入攻击详解 ][SQL_]

[Java面试知识点（六十二）socket、session、url、http、状态码 ][Java_socket_session_url_http_]

[Java面试知识点（七十）Socket编程——C/S架构基础入门 ][Java_Socket_C_S_]

[Java面试知识点（七十一）Socket编程进阶——简易聊天室 ][Java_Socket_]

[ Java面试知识点（七十二）C/S架构和B/S架构的异同 ][Java_C_S_B_S_]

### 数据库 ###

[Java面试知识点（十八）结果集 (ResultSet)全面解析][Java_ _ResultSet]

[数据库面试知识点（一）基本概念][Link 6]

[数据库面试知识点（二）索引][Link 7]

[数据库面试知识点（三）事务][Link 8]

[数据库面试知识点（四）存储引擎 ][Link 9]

[数据库面试知识点（五）数据库优化 ][Link 10]

[数据库面试知识点（六）数据库锁 ][Link 11]

[ 数据库面试知识点（七）主从复制和读写分离 ][Link 12]

[Java面试知识点（六十六）关于Redis的面试题][Java_Redis]

### 操作系统 ###

[操作系统知识点回顾—线程进程部分 ][Link 13]

[操作系统知识点回顾—内存和中断 ][Link 14]

[操作系统知识点回顾—互斥和同步 ][Link 15]

[操作系统知识点回顾—Linux相关命令 ][Linux_]

[Linux IO 模式及 select、poll、epoll 详解 ][Linux IO _ select_poll_epoll _]

### 数据结构 ###

[刷题——\[剑指 offer\] JAVA 版题解][offer_ JAVA]

[剑指offer刷题总结——数组篇（一） ][offer_]

[剑指offer刷题总结——数组篇（二） ][offer_ 1]

[剑指offer刷题总结——数组篇（三） ][offer_ 2]

[剑指offer刷题总结——数组篇（四） ][offer_ 3]

[剑指offer刷题总结——数组篇（五） ][offer_ 4]

[剑指offer刷题总结——链表篇 ][offer_ 5]

[剑指offer刷题总结——字符串篇（一） ][offer_ 6]

[剑指offer刷题总结——树篇（一） ][offer_ 7]

[剑指offer刷题总结——树篇（二） ][offer_ 8]

[剑指offer刷题总结——树篇（三） ][offer_ 9]

[剑指offer刷题总结——堆、栈、队列篇 ][offer_ 10]

[ Java面试知识点（七十七）剑指offer精彩算法题（上） ][Java_offer_]

[B树、B+树、B\*树][B_B_B]

[java实现排序算法，比较时间复杂度][java]

[Java实现动态规划经典题目][Java 20]

[Java面试知识点（四十七）红黑树][Java 21]

[ Java面试知识点（六十七）数据结构之栈 ][Java_ 15]

[Java面试知识点（九十二）搜索与回溯算法-Java实现 ][Java_-Java_]

[Java面试知识点（九十三）高效判断一个数，是不是素数 ][Java_ 16]

--------------------

**【Java 面试那点事】**

这里致力于分享 Java 面试路上的各种知识，无论是技术还是经验，你需要的这里都有！

这里可以让你【**快速了解 Java 相关知识**】，并且【**短时间在面试方面有跨越式提升**】

面试路上，你不孤单！  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzOTQ1MjQ2_size_16_color_FFFFFF_t_70]

未完待续…

[20_21_ _ JAVA]: https://blog.csdn.net/qq_33945246/article/details/105602349
[Java_Java]: https://blog.csdn.net/qq_33945246/article/details/90040041
[Java_Java_private_protected_public]: https://blog.csdn.net/qq_33945246/article/details/89923304
[Java_String _ char]: https://blog.csdn.net/qq_33945246/article/details/89923817
[Java_integer_string_equals]: https://blog.csdn.net/qq_33945246/article/details/89963821
[Java_java_exception_throw_throws_try_catch]: https://blog.csdn.net/qq_33945246/article/details/89964438
[Java_string_stringbuilder_stringbuffer]: https://blog.csdn.net/qq_33945246/article/details/94461672
[Java_final_static_abstract]: https://blog.csdn.net/qq_33945246/article/details/90210114
[Java]: https://blog.csdn.net/qq_33945246/article/details/90439746
[Java 1]: https://blog.csdn.net/qq_33945246/article/details/102455829
[Java 2]: https://blog.csdn.net/qq_33945246/article/details/94546091
[Java 3]: https://blog.csdn.net/qq_33945246/article/details/102465108
[Java_Java_]: https://blog.csdn.net/qq_33945246/article/details/102918697
[Java_java]: https://blog.csdn.net/qq_33945246/article/details/89964312
[Java 4]: https://blog.csdn.net/qq_33945246/article/details/90768050
[Java 5]: https://blog.csdn.net/qq_33945246/article/details/91039900
[Java 6]: https://blog.csdn.net/qq_33945246/article/details/91040040
[Java_Java_enum]: https://blog.csdn.net/qq_33945246/article/details/91043605
[Java_]: https://blog.csdn.net/qq_33945246/article/details/104791963
[Java_ 1]: https://blog.csdn.net/qq_33945246/article/details/104790141
[Java_ 2]: https://blog.csdn.net/qq_33945246/article/details/104769057
[Link 1]: https://blog.csdn.net/qq_33945246/article/details/104757997
[Java_ 3]: https://blog.csdn.net/qq_33945246/article/details/104753510
[Java_ 4]: https://blog.csdn.net/qq_33945246/article/details/104746904
[Java_Java 1]: https://blog.csdn.net/qq_33945246/article/details/91040681
[Java_Java 2]: https://blog.csdn.net/qq_33945246/article/details/91041223
[Java 7]: https://blog.csdn.net/qq_33945246/article/details/96446112
[Java_Java 3]: https://blog.csdn.net/qq_33945246/article/details/96483798
[Java_hashmap_hashtable_hashset]: https://blog.csdn.net/qq_33945246/article/details/89922517
[Java_hashmap]: https://blog.csdn.net/qq_33945246/article/details/95042507
[Java_HashMap]: https://blog.csdn.net/qq_33945246/article/details/96438278
[hashmap _]: https://blog.csdn.net/qq_33945246/article/details/103925048
[Java_ConcurrentHashMap]: https://blog.csdn.net/qq_33945246/article/details/95066502
[ConcurrentHashMap_]: https://blog.csdn.net/qq_33945246/article/details/103956935
[Java_HashMap 1]: https://blog.csdn.net/qq_33945246/article/details/95070455
[Java_ArrayList]: https://blog.csdn.net/qq_33945246/article/details/89925310
[Java_iterator]: https://blog.csdn.net/qq_33945246/article/details/91040517
[List_Set_Iterator_]: https://blog.csdn.net/qq_33945246/article/details/103973362
[Java_Map_]: https://blog.csdn.net/qq_33945246/article/details/96449657
[HashSet_HashMap_TreeSet_TreeMap_LinkedHashSet_LinkedHashMap]: https://blog.csdn.net/qq_33945246/article/details/103865257
[Link 2]: https://blog.csdn.net/qq_33945246/article/details/95333179
[Link 3]: https://blog.csdn.net/qq_33945246/article/details/91442517
[Link 4]: https://blog.csdn.net/qq_33945246/article/details/89964186
[Java_sleep _ _ wait]: https://blog.csdn.net/qq_33945246/article/details/90441243
[join]: https://blog.csdn.net/qq_33945246/article/details/95344432
[Java _ synchronized_lock]: https://blog.csdn.net/qq_33945246/article/details/95085682
[synchronized]: https://blog.csdn.net/qq_33945246/article/details/95508735
[atomic _]: https://blog.csdn.net/qq_33945246/article/details/104020878
[synchronized_]: https://blog.csdn.net/qq_33945246/article/details/104022524
[Lock_]: https://blog.csdn.net/qq_33945246/article/details/104037001
[Link 5]: https://blog.csdn.net/qq_33945246/article/details/104037104
[Java_ 5]: https://blog.csdn.net/qq_33945246/article/details/95975150
[Java_ 6]: https://blog.csdn.net/qq_33945246/article/details/96431582
[BlockingQueue]: https://blog.csdn.net/qq_33945246/article/details/96003322
[-]: https://blog.csdn.net/qq_33945246/article/details/96343374
[Java_ 7]: https://blog.csdn.net/qq_33945246/article/details/102551704
[Java 8]: https://blog.csdn.net/qq_33945246/article/details/102599820
[Java_ 8]: https://blog.csdn.net/qq_33945246/article/details/102552889
[Java_Java_ThreadLocal]: https://blog.csdn.net/qq_33945246/article/details/102893961
[Java_ Hibernate _ 7]: https://blog.csdn.net/qq_33945246/article/details/89924288
[Java 9]: https://blog.csdn.net/qq_33945246/article/details/89924470
[Java_java 1]: https://blog.csdn.net/qq_33945246/article/details/92773966
[Java_Java 4]: https://blog.csdn.net/qq_33945246/article/details/99733791
[Java_Java 5]: https://blog.csdn.net/qq_33945246/article/details/99828412
[Java_Java_ 1]: https://blog.csdn.net/qq_33945246/article/details/100009469
[Java_Spring_IOC_AOP_]: https://blog.csdn.net/qq_33945246/article/details/102718406
[Java_ Spring _ IOC]: https://blog.csdn.net/qq_33945246/article/details/102719838
[Java_ Spring _ AOP]: https://blog.csdn.net/qq_33945246/article/details/102741492
[Java_Spring bean _]: https://blog.csdn.net/qq_33945246/article/details/102783219
[Java_Spring _ AOP_IOC_]: https://blog.csdn.net/qq_33945246/article/details/102785540
[Java 10]: https://blog.csdn.net/qq_33945246/article/details/89964084
[Java 11]: https://blog.csdn.net/qq_33945246/article/details/89964567
[Java 12]: https://blog.csdn.net/qq_33945246/article/details/90210693
[Java_super_this]: https://blog.csdn.net/qq_33945246/article/details/91441192
[Java 13]: https://blog.csdn.net/qq_33945246/article/details/90210746
[Java 14]: https://blog.csdn.net/qq_33945246/article/details/95614244
[Java_ 9]: https://blog.csdn.net/qq_33945246/article/details/102581705
[Java_ 10]: https://blog.csdn.net/qq_33945246/article/details/102660327
[Java_ 11]: https://blog.csdn.net/qq_33945246/article/details/102665939
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[Java_I_O _]: https://blog.csdn.net/qq_33945246/article/details/95939581
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[Java_forward _ redirect]: https://blog.csdn.net/qq_33945246/article/details/89924171
[Java_URL]: https://blog.csdn.net/qq_33945246/article/details/89924595
[IP_DNS_MAC]: https://blog.csdn.net/qq_33945246/article/details/95180535
[ip]: https://blog.csdn.net/qq_33945246/article/details/95192008
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[Java_OSI_ _]: https://blog.csdn.net/qq_33945246/article/details/97290041
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[Https _]: https://blog.csdn.net/qq_33945246/article/details/104414338
[HTTP_POST_GET_]: https://blog.csdn.net/qq_33945246/article/details/104613726
[XSS_CSRF_]: https://blog.csdn.net/qq_33945246/article/details/104415359
[DDoS _]: https://blog.csdn.net/qq_33945246/article/details/104417576
[SQL_]: https://blog.csdn.net/qq_33945246/article/details/104636528
[Java_socket_session_url_http_]: https://blog.csdn.net/qq_33945246/article/details/97788021
[Java_Socket_C_S_]: https://blog.csdn.net/qq_33945246/article/details/102484558
[Java_Socket_]: https://blog.csdn.net/qq_33945246/article/details/102515670
[Java_C_S_B_S_]: https://blog.csdn.net/qq_33945246/article/details/102523613
[Java_ _ResultSet]: https://blog.csdn.net/qq_33945246/article/details/90210429
[Link 6]: https://blog.csdn.net/qq_33945246/article/details/95165966
[Link 7]: https://blog.csdn.net/qq_33945246/article/details/95166017
[Link 8]: https://blog.csdn.net/qq_33945246/article/details/95166589
[Link 9]: https://blog.csdn.net/qq_33945246/article/details/104648318
[Link 10]: https://blog.csdn.net/qq_33945246/article/details/104648687
[Link 11]: https://blog.csdn.net/qq_33945246/article/details/104650435
[Link 12]: https://blog.csdn.net/qq_33945246/article/details/104655666
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[Link 13]: https://blog.csdn.net/qq_33945246/article/details/104131129
[Link 14]: https://blog.csdn.net/qq_33945246/article/details/104142219
[Link 15]: https://blog.csdn.net/qq_33945246/article/details/104353881
[Linux_]: https://blog.csdn.net/qq_33945246/article/details/104345327
[Linux IO _ select_poll_epoll _]: https://blog.csdn.net/qq_33945246/article/details/104359061
[offer_ JAVA]: https://blog.csdn.net/qq_33945246/article/details/95940643
[offer_]: https://blog.csdn.net/qq_33945246/article/details/104424703
[offer_ 1]: https://blog.csdn.net/qq_33945246/article/details/104457727
[offer_ 2]: https://blog.csdn.net/qq_33945246/article/details/104485058
[offer_ 3]: https://blog.csdn.net/qq_33945246/article/details/104575619
[offer_ 4]: https://blog.csdn.net/qq_33945246/article/details/104578970
[offer_ 5]: https://blog.csdn.net/qq_33945246/article/details/104440234
[offer_ 6]: https://blog.csdn.net/qq_33945246/article/details/104531414
[offer_ 7]: https://blog.csdn.net/qq_33945246/article/details/104440308
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[offer_ 9]: https://blog.csdn.net/qq_33945246/article/details/104600662
[offer_ 10]: https://blog.csdn.net/qq_33945246/article/details/104446375
[Java_offer_]: https://blog.csdn.net/qq_33945246/article/details/102623993
[B_B_B]: https://blog.csdn.net/qq_33945246/article/details/96102658
[java]: https://blog.csdn.net/qq_33945246/article/details/96112497
[Java 20]: https://blog.csdn.net/qq_33945246/article/details/96303291
[Java 21]: https://blog.csdn.net/qq_33945246/article/details/96440797
[Java_ 15]: https://blog.csdn.net/qq_33945246/article/details/102394996
[Java_-Java_]: https://blog.csdn.net/qq_33945246/article/details/103044465
[Java_ 16]: https://blog.csdn.net/qq_33945246/article/details/103045738
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