Java中的String,StringBuilder,StringBuffer三者的区别
https://blog.csdn.net/shirleyacount/article/details/39958371
HashMap底层实现原理/HashMap与HashTable区别/HashMap与HashSet区别
https://www.cnblogs.com/beatIteWeNerverGiveUp/p/5709841.html
JAVA 中的几种基本数据类型是什么,各自占用多少字节。
https://blog.csdn.net/qq_27093465/article/details/52262651
List、Set、Map的区别
https://www.cnblogs.com/IvesHe/p/6108933.html
Oracle ORA-01033: ORACLE initialization or shutdown in progress 错误解决办法
https://www.cnblogs.com/wangsaiming/p/3688141.html
修改字符集
https://www.cnblogs.com/gaoyuechen/p/9447404.html
Elasticsearch
https://www.cnblogs.com/dreamroute/p/8484457.html
Lucene全文检索处理非结构化数据
https://blog.csdn.net/qqq327954699/article/details/82386606
同义词的用法:
http://www.cnblogs.com/kerrycode/archive/2012/12/19/2824963.html
算法数据结构