java 集合框架

https://zhuanlan.zhihu.com/p/24687801?refer=dreawer

http://www.cnblogs.com/skywang12345/p/3323085.html

https://github.com/CarpenterLee/JCFInternals

http://www.cnblogs.com/whgk/category/909062.html

http://www.cnblogs.com/xiaoxi/category/929860.html

Collection

线程安全性

Vector、Stack：线程安全，ArrayList、LinkedList：非线程安全

实现方式

LinkedList：双向链表，ArrayList，Vector，Stack：数组

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ArrayList

LinkedList

Vector和Stack

CopyOnWriteArrayList

Map

HashMap

HashMap

LinkedMap