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Java基础教程(11)-Java中的集合类

集合类型也是Java标准库中被使用最多的类型；通常也是面试时最常被问到的问题； Java中的集合在Java中，如果一个Java对象可以在内部持有若干其他Java对象，并对外提供访问接口，我们把这种Java对象称为集合。 Java的数组可以看作是一种集合 Java标准库自带的 java.util 包...

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32.5 类型通配符package myGeneric.Demo5; import java.util.ArrayList; import java.util.List; public class Demo1 { public static void main(String[] args) { //...

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黑马全套Java教程（八）：集合进阶（中）

31.4 ArrayListList集合子类特点List集合常用子类：ArrayList, LinkedListArrayList：底层数据结构是数组，查询快，增删慢LinkedList：底层数据结构是链表，查询慢，增删快练习：package myList.Demo7; import...

黑马全套Java教程（八）：集合进阶（上）

31 集合进阶集合类的特点：提供一个存储空间可变的存储模型，存储的数据容量可以随时发生改变集合类体系结构如下：31.1 Collection集合package myCollection.Demo1; import java.util.ArrayList; import java.util.Colle...

JournalDev 博客的 Java 教程集合（JournalDev Java Tutorials Collections）

Tutorials I have written a lot of posts here into many categories and as the number of post grows, keeping track of them becomes harder. So I have pro...

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