HashMap 的底层原理
https://www.cnblogs.com/holyshengjie/p/6500463.html
揭秘 HashMap 实现原理（Java 8）
https://www.cnblogs.com/yangming1996/p/7997468.html
认识Thread的 start() 和 run()
https://www.cnblogs.com/whyalwaysme/p/4495959.html
[java]static关键字的四种用法
https://www.cnblogs.com/dotgua/p/6354151.html?utm_source=itdadao&utm_medium=referral
Java中的static关键字解析
https://www.cnblogs.com/dolphin0520/p/3799052.html
抽象类和接口的区别以及使用场景（记）
https://blog.csdn.net/lamyuqingcsdn/article/details/50501871
https://blog.csdn.net/xiaoliuliu2050/article/details/61931498
HashMap原理详解
https://www.cnblogs.com/zhiyangjava/p/6440107.html
https://blog.csdn.net/abcdad/article/details/64123291
HashMap原理总结
https://www.cnblogs.com/kmsfan/p/8027184.html
HashMap实现原理及源码分析
https://www.cnblogs.com/chengxiao/p/6059914.html
JAVA经典集合框架学习笔记——HashMap的底层实现原理
https://www.cnblogs.com/constantingF/p/7446307.html (通俗易懂的.)
equals和==的区别小结
https://www.cnblogs.com/chris-oil/p/7253264.html
https://www.cnblogs.com/Eason-S/p/5524837.html