java知识点

1.Synchronize使用
https://blog.csdn.net/nangeali/article/details/81532124

2.HashMap
https://blog.csdn.net/qq_35181209/article/details/74503362

3.HashMap和Hashtable的详细区别
https://blog.csdn.net/qq_35181209/article/details/74503362

4.理解TCP/IP三次握手与四次挥手
https://www.cnblogs.com/lms0755/p/9053119.html

5.TCP和UDP
https://blog.csdn.net/zhang6223284/article/details/81414149

6.jvm中的堆和栈
http://mini.eastday.com/bdmip/180330140214559.html#

7.线程与进程
https://kb.cnblogs.com/page/531409/

8.get和post的区别
http://www.w3school.com.cn/tags/html_ref_httpmethods.asp

9.DNS原理
https://blog.csdn.net/chenxianru1/article/details/78782728

10.activity生命周期
https://blog.csdn.net/xiajun2356033/article/details/78741121