java_集合学习(一)
JavaHashMap
⼀、概述
在官⽅⽂档中是这样描述HashMap的:Hash table based implementation of the Map interface. This implementation providesall of the optional map operations, and permits null values and the null key. (TheHashMap class is roughly equivalent to Hashtable, excep
原创
2020-05-11 11:06:31 ·
171 阅读 ·
0 评论