protected Object clone() throws CloneNotSupportedException { Employee clone = null; try { clone = (Employee) super.clone(); // new date object to cloned method clone.setDob((Date) this.getDob().clone()); } catch (CloneNotSupportedException e) { throw new RuntimeException(e); } return...
[Android.Runtime.Register("clone","()Ljava/lang/Object;","GetCloneHandler")]publicvirtualJava.Lang.ObjectClone(); Returns Object a clone of thisArrayListinstance Attributes RegisterAttribute Remarks Returns a shallow copy of thisArrayListinstance. (The elements themselves are not copied.) ...
The clone() method is used to create a new instance of an ArrayList object that is a shallow copy of an existing ArrayList object. Package:java.util Java Platform:Java SE 8 Syntax: clone() Return Value: A clone of this ArrayList instance Pictorial presentation of ArrayList.clone() Method E...
The idea is to return animmutable copyof the class fromclone()method. Checkout the overriddenclone()method in the following class: publicclassEmployeeimplementsCloneable{privateLongid;privateStringname;privateDatedob;//Mutable fieldpublicEmployee(Longid,Stringname,Datedob){super();this.id=id;this.na...
序列化这个方法通用性非常强,代价是效率非常差。如果我使用序列化实现deep copy,程序90%以上的时间都在做deep copy,所以我覆盖了所有的clone方法实现deep copy.序列化这个方法对于效率要求很低的情况下,是个非常好的解决方案,但对于要求效率的算法,就不能用序列话了。
System.out.println("下标为1的数据是:\t"+list.get(1));//寻找下标为1的数//clone()Object listClone = list.clone();//克隆System.out.println("克隆的数据:\t"+listClone);//toArray()//转换为Object类型数组Object listArray[] =list.toArray(); ...
以下示例程序旨在说明Java.util.LinkedList.clone()方法: AI检测代码解析 // 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 ...
《Java核心技术》建议,即使默认的浅拷贝能满足需求,也建议实现Cloneable接口并将clone重定义为public,并调用super.clone(); public Manager clone() throws CloneNotSupportedException{ return (Manager) super.clone(); } 1. 2. 3. 这样声明为public,也能在外部直接调用clone了。老版本Java中返回的是Object,现在...
ArrayList 实现了 Cloneable 接口,即覆盖了函数 clone(),所以它能被克隆。 ArrayList 实现了 RandmoAccess 接口,因此提供了随机访问功能。 ArrayList 实现了 Serializable 接口,这意味着 ArrayList 支持序列化。 3、ArrayList 属性源码剖析 public class ArrayList<E> extends AbstractList<E> implements List<E>, Rando...
Objectclone() Returns a shallow copy of thisArrayListinstance. booleancontains(Objecto) Returnstrueif this list contains the specified element. voidensureCapacity(int minCapacity) Increases the capacity of thisArrayListinstance, if necessary, to ensure that it can hold at least the number of elements...