网站列表:[Google,Runoob,Taobao]拷贝ArrayList:[Google,Runoob,Taobao] 在上面的示例中,我们创建一个名为 sites 的动态数组。注意表达式: (ArrayList<String>)sites.clone(); sites.clone()- 返回所拷贝的 sites 对象 (ArrayList <String>)- 返回的值转变成一个 String 类型的动态数组 输出clone() 方法的返回值...
1.使用 ArrayList.clone() 创建浅拷贝 2.创建 ArrayList 的深拷贝 2.1. 启用列表项的深拷贝 2.2. 深拷贝 Java 集合 2.3. 示例 在Java 中,ArrayList.clone()方法创建一个列表的浅拷贝,其中只复制了对象引用。如果我们在第一个 ArrayList 中更改列表项的对象状态,那么更改后的对象状态也将反映在克隆的列表中。
Return Value: A clone of this ArrayList instance Pictorial presentation of ArrayList.clone() Method Example: ArrayList.clone Method The following example returns a shallow copy of this LinkedList. import java.util.*; public class test { public static void main(String[] args) { // ArrayList with...
Theclone()method creates a newArrayListand thencopies the backing array to cloned array. It creates a shallow copy of the given arraylist. In a shallow copy, the original list and the cloned list, both refer to the same objects in the memory. Let us see the internal implementation of thec...
Java.Util Assembly: Mono.Android.dll Returns a shallow copy of thisArrayListinstance. C# [Android.Runtime.Register("clone","()Ljava/lang/Object;","GetCloneHandler")]publicvirtualJava.Lang.ObjectClone(); Returns Object a clone of thisArrayListinstance ...
32 // TODO Auto-generated method stub 33 Calendar now = Calendar.getInstance(); 34 Employee original = new Employee("Mike",5000,now); 35 36 Employee copy = (Employee) original.clone(); 37 copy.name = "Kite"; 38 copy.salary = 8000; ...
// Java code to illustrate clone() method import java.io.*; import java.util.LinkedList; public class LinkedListDemo { public static void main(String args[]) { // Creating an empty LinkedList LinkedList list = new LinkedList(); // Use add() method to add elements in the list ...
你可能不懂为什么newDog 的name没变化,而newDog 的pojo、list都发生了变化—— 原来java 的clone 方法把 String当做了普通字段并进行了深复制, 而其他对象类型数据仍然的浅复制。 那么正确的做法是: package design.creator.prototype; import java.util.ArrayList; ...
clone() and the Cloneable Interface in Java ...Theclone( )method generates a duplicate copy of the object on which it is called. Only classes that implement theCloneableinterface can be cloned. ...clone()产生了一个调用它的对象的复制;只有实现了Cloneable接口的类才可以被复制。 TheCloneable...
ArrayList clone() 方法的返回值是什么？Java ArrayList clone() 方法的返回值是什么？返回 ArrayList ...