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史上最全的Java容器集合之HashMap（源码解读）（二）

HashMap的成员方法put方法//向哈希表中添加元素 public V put(K key, V value) { return putVal(hash(key), key, value, false, true); } 复制代码向用户开放的put方法调用的是putVal方法：putVal方法...

史上最全的Java容器集合之HashMap（源码解读）（一）

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66.Java容器面试题：谈谈你对 HashMap 的理解

66.Java容器面试题：谈谈你对 HashMap 的理解为了能够在面试回答中优雅而不失体面回答面试考点，该文章借鉴了不同平台对知识点的描述。回答HashMap 是一种存取高效但不保证有序的常用容器。它的数据结构为“数组+链表”，是解决哈希冲突的产物，也就是我们常说的链地址法。它实现了Map 接口采...

史上最全的Java容器集合之HashMap（源码解读）（下）

HashMap的构造方法/** *使用默认的容量及装载因子构造一个空的HashMap */ public HashMap() { this.loadFactor = DEFAULT_LOAD_FACTOR; } /** * 根据给定的初始容量和装载因子创建一个空的HashMap * 初始容量小于0或...

史上最全的Java容器集合之HashMap（源码解读）（上）

前言文本已收录至我的GitHub仓库，欢迎Star：github.com/bin39232820…种一棵树最好的时间是十年前，其次是现在絮叨equals和hashCode理解了，接下来就是HashMap了，这个也是平时我们工作中用的最多的容器之一🔥史上最全的Java容器集合之入门🔥史上最全的Ja...

Java 容器 --- HashMap分析

HashMap部分源码hash算法public V put(K key, V value) { return putVal(hash(key), key, value, false, true); } static final int hash(Object key) { int h; return...

Java容器深入浅出之Map、HashMap、Hashtable及其它实现类

在Java中，Set的底层事实上是基于Map实现的，Map内部封装了一个Entry内部接口，由实现类来封装key-value对，当value值均为null时，key的集合就形成了Set。因此，Map集合具有如下的一些特点： 1. Key集因为是Set的实现，因此是无顺序、不可重复的。 2. Valu...

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　　前两篇对HashMap这家伙的主要方法，主要算法做了一个详细的介绍，本篇主要介绍HashMap中默默无闻地工作着的集合们，包括KeySet，values，EntrySet，以及对应的迭代器：HashIterator，KeyIterator，ValueIterator，EntryIterator和...

【Java入门提高篇】Day23 Java容器类详解（六）HashMap源码分析（中）

　　上一篇中对HashMap中的基本内容做了详细的介绍，解析了其中的get和put方法，想必大家对于HashMap也有了更好的认识，本篇将从了算法的角度，来分析HashMap中的那些函数。 HashCode 　　先来说说HashMap中HashCode的算法，在上一篇里，我们看到了HashMap中的...

Java 容器 & 泛型：五、HashMap 和 TreeMap的自白

一、Map回顾 Map，又称映射表，是将键映射到值的对象。有四种实现Map接口并且经常使用的Map集合为：HashMap，TreeMap，Hashtable 和 LinkedHashMap. 泥瓦匠记忆宫殿： 1、一个映射不...

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