目录1. 介绍2. 学习的意义2.1 Java 集合框架的优点及作用2.2 笔试及面试题3. 接口 interfaces3.1 基本关系说明3.2 Collection 接口说明3.3 Collection 常用方法说明3.4 Collection 示例3.5 Map 接口说明Map3.6
Seems like this might be easy, but from reading other SO answers there are a number of ways for it to possibly work: