Map + debug
字典类型
HashMap+LinkedHashMap:
Map集合遍历键找值方式
![](https://img2020.cnblogs.com/blog/1614700/202101/1614700-20210121233413253-425828200.png)
entryset 取出keys+values
HashMap存储自定义类型键值
![](https://img2020.cnblogs.com/blog/1614700/202101/1614700-20210121233619117-174354269.png)
of 方法
![](https://img2020.cnblogs.com/blog/1614700/202101/1614700-20210121234040908-1226032274.png)
debug
字典类型
HashMap+LinkedHashMap:
entryset 取出keys+values
debug