集合的继承结构

Others 2021-11-28 16:02:51 views: null 
Collection接口

-- List接口  ： 数据有序，可以重复。

   -- ArrayList子类

   -- LinkedList子类

-- Set接口  ： 数据无序，不可以存重复值

   -- HashSet子类

-- Map接口  ： 键值对存数据

-- HashMap

Collections工具类

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