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教妹学 Java：大有可为的集合(3)

03、二哥，HashMap 和 TreeMap 有什么区别啊？三妹，提问题越来越有艺术了啊？继续听哥给你慢慢讲啊。HashMap 存储的是键值对，其键是一个哈希码（Hash 的直译，也称作散列）。来看源码。public class HashMap<K,V> { tr...

教妹学 Java：大有可为的集合(2)

ArrayList 其实是一个动态数组，来看源码。public class ArrayList<E> { /** * The array buffer into which the elements of the ArrayList are stored. * The capacity ...

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教妹学 Java：大有可为的集合(1)

00、故事的起源“二哥，上一篇《泛型》的反响效果怎么样啊？”三妹对她提议的《教妹学 Java》专栏很是关心。“有人评论说，‘二哥你敲代码都敲出幻想了啊。’”“呵呵，这句话充斥着满满的讽刺意味啊。”三妹有点难过了起来。“不过，也有人评论说，‘建议这个系列的文章多写啊，因为我花了半个月都没看懂《 Jav...

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更新时间 2022-10-08 16:49:26

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