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Collection 与 List Collection 是 Java 集合的一个根接口，JDK 没有它的实现类。内部仅仅做 add()，remove()，contains()，size() 等方法的声明。 List 接口是Collection 接口的一个子类，在Collection 基础上扩充了...

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Java Collection笔记之ArrayList

1、前言 ArrayList 是一个数组队列，相当于动态数组。与Java中的数组相比，它的容量能动态增长。它继承于AbstractList，实现了List, RandomAccess, Cloneable, java.io.Serializable这些接口。 ArrayList 继承了Abstrac...

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