Java arraylist源码的相关内容

Java Review - ArrayList 源码解读

概述从类的继承图上我们可知道，ArrayList实现了List接口。同时List是顺序容器，即元素存放的数据与放进去的顺序相同，允许放入null元素，ArrayList底层基于数组实现。每个ArrayList都有一个容量(capacity)，表示底层数组的实际大小，容器内存储元素的个数不能多于当前容...

史上最全的Java容器集合之ArrayList(源码解读)（上）

一、ArrayList认识概念概念：ArrayList是一个其容量能够动态增长的动态数组。但是他又和数组不一样，下面会分析对比。它继承了AbstractList，实现了List、RandomAccess, Cloneable, java.io.Serializable。RandomAccess接口，...

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java框架集合List子接口之ArrayList源码剖析

ArrayListArrayList实现了List接口 , 它是有序且可以重复的 , 允许存放所有所有元素 , 包括null , 除了实现List接口之外这个类还提供了一些方法来操作内部存储列表数组的大小 , 这个类大致相当于Vector , 只是它不是同步的 , 同时ArrayList还实现了Ra...

Java集合学习：ArrayList源码详解

前言ArrayList可谓在工作中使用很频繁的容器了，其底层采用数组作为存储结构，其特点取值速度快，下面通过源码来了解下它的原理。正文重要属性结构下面来看下ArrayList的一些重要属性 //默认数组初始容量 private static final int DEFAULT_CAPACITY = ...

Java ArrayList 源码

ArrayList 概述ArrayList 是基于数组实现，是一个动态数组，容量可以自动增长，动态增加内存。ArrayList 不是线程安全的，只能用在单线程，多线程换成环境下可以考虑 Collections.synchronizedList(List l) 函数返回一个线程安全的 ArrayLis...

史上最全的Java容器集合之ArrayList(源码解读)（下）

具体方法add方法/** * Appends the specified element to the end of this list. * * @param e element to be appended to this list * @return <tt>true</tt...

史上最全的Java容器集合之ArrayList(源码解读)（上）

絮叨前面2篇的基础，大家还是好好学习一下，下面是链接🔥史上最全的Java容器集合之入门🔥史上最全的Java容器集合之基础数据结构（手撕链表）本来想直接将List这个父类下的所有之类，但是怕太长，我把我们真实开发中最最常用的ArrayList单独拿出来讲了，后面2个做一...

Java之ArrayList源码浅析

ArrayList特点优点：有序，访问元素速度快. 缺点：插入，删除速度慢。 JDK1.8.131版本。首先查看ArrayList实例化方法相关代码。 private static final Object[] DEFAULTCAPACITY_EMPTY_ELEMENTDATA = {}; tr...

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