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Java集合API提供了一组功能强大的数据结构和算法, 具有以下作用(简述)存储和组织数据提供高效的数据访问和操作实现算法和数据处理提供线程安全性支持泛型编程java.util.Collection是集合框架的根接口。它位于集合框架层次结构的顶部。它包含一些重要的方法，例如每个 Collection...

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