https://www.yuque.com/wuwei-qbtaj/fznc3c
https://www.nowcoder.com/discuss/765240
https://dunwu.github.io/javacore/
https://flying-veal.notion.site/CS-Wiki-ac77673444e447fd92f36c542fc31ec2
https://zyfcodes.blog.csdn.net/article/details/100706167
https://my.oschina.net/u/3768341?tab=newest&catalogId=5734126