我们可以看一下,ArrayList实现类源码中的第一段注释: Resizable-array implementation of the List interface. Implements all optional list operations, and permits all elements, including null. In addition to implementing the List interface, this class provides methods to manipulate the size of the array t...
In Java, we need to declare the size of an array before we can use it. Once the size of an array is declared, it's hard to change it. 在Java中,我们需要先声明数组的大小,然后才能使用它。一旦声明了数组的大小,就很难更改它。 To handle this issue, we can use theArrayListclass. TheArra...
public class TestArrayList{public static void main(String[] args) {// 创建集合 ArrayList<String> array = new ArrayList<String>();// 添加元素 array.add("hello"); array.add("world"); array.add("java");// public boolean remove(Object o)：删除指定的元素，返回删除是否成功 ...
public class ArrayListDemo02 {public static void main(String[] args) {//创建集合ArrayList<String> array = new ArrayList<String>();//添加元素array.add("hello");array.add("world");array.add("java");//public boolean remove(Object o):删除指定的元素,返回删除是否成功System.out.println(array.r...
This class is a member of theJava Collections Framework. Added in 1.2. Java documentation forjava.util.ArrayList. Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons 2.5 Attribution Li...
publicclassArrayList<E>extendsAbstractList<E> implementsList<E>,RandomAccess,Cloneable,java.io.Serializable { // 序列版本号 privatestaticfinallong serialVersionUID =8683452581122892189L; // 保存ArrayList中数据的数组 privatetransient Object[] elementData; ...
publicclassArrayListDemo02{ publicstaticvoidmain(String[]args) { //创建集合 ArrayList<String>array=newArrayList<String>(); //添加元素 array.add("hello"); array.add("world"); array.add("java"); //public boolean remove(Object o):删除指定的元素,返回删除是否成功 ...
publicclassArrayListDemo02{publicstaticvoidmain(String[]args){//创建集合ArrayList<String>array=newArrayList<String>();//添加元素array.add("hello");array.add("world");array.add("java");//public boolean remove(Object o):删除指定的元素,返回删除是否成功// System.out.println(array.remove("world")...
Fields inherited from class java.util.AbstractList modCount Constructor Summary Constructors Constructor and Description ArrayList() Constructs an empty list with an initial capacity of ten. ArrayList(Collection<? extendsE> c) Constructs a list containing the elements of the specified collection, in th...
public class ArrayListDemo02 { public static void main(String[] args) { //创建集合 ArrayList<String> array = new ArrayList<String>(); //添加元素 array.add("hello"); array.add("world"); array.add("java"); //public boolean remove(Object o):删除指定的元素,返回删除是否成功 ...