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Java集合之Collection接口
集合系统的核心是Collection接口,除Map的子类外,多数集合类都实现了该接口。本文主要介绍两部分内容:一是Collection接口的相关方法与功能,二是Set接口的方法及其特性,帮助理解集合框架的基本操作与使用方式。 1、 Collection 接口主要包含添加、删除、查询等 ...
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