clonedEmp props:{city=New York, salary=10000, title=CEO}: We didn’t make any change in clonedEmp properties, but still, they got changed because both emp and clonedEmp variables are referring to the same object
If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass(). By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, ...
我们可以用下图对浅克隆进行展示：在Java语言中，通过实现Cloneable接口，默认覆盖Object类的clone()方法就...
Java语言规范所做的规定仅有这么一节:Chapter 10. Arrays 引用其中的演示用代码: An array thus has the same public fields and methods as the following class: classA<T>implementsCloneable, java.io.Serializable {publicfinalintlength=X;publicT[] clone() {try{return(T[])super.clone(); }catch(Cl...
* A class implements the Cloneable interface to indicate to the {@link java.lang.Object#clone()} method that * it is legal for that method to make a field-for-field copy of instances of that class. */ public interface Cloneable { ...
* the case that no fields in the object returned by {@codesuper.clone} * need to be modified. * <p> * The method {@codeclone} for class {@codeObject} performs a * specific cloning operation. First, if the class of this object does ...
Exception in thread "main" java.lang.CloneNotSupportedException: com.heatdeath.test_package.CloneDemo$CloneClass at java.lang.Object.clone(Native Method) at com.heatdeath.test_package.CloneDemo$CloneClass.clone(CloneDemo.java:14) at com.heatdeath.test_package.CloneDemo.main(CloneDemo.java:23) ...
* Simple example of overriding clone() method in Java to understand How Cloning of 5 * Object works in Java. 6 * 7 * @author 8 */ 9 public class JavaCloneTest { 10 private static final Logger logger = Logger.getLogger(JavaCloneTest.class); ...
java clone 简介 实现Cloneable接口的类才可以被克隆,如果不实现该接口,调用Object clone方法会报CloneNotSupportedException: InvokingObject's clone...浅克隆 指拷贝对象时仅拷贝对象本身中的基本变量,而不拷贝对象包含的引用指向的对象 深克隆 不仅拷贝对象本身中的基本变量,而且还拷贝对象中包含的引用指向的所有对象...
因为Java中并不是所有的类都可以被克隆(而且JDK中还描述说不能保证某些类clone的结果x.clone()!=x绝对成立),所以Object类对象无法调用clone()...还有super不是指Object而是指其父类的引用。由于clone是object类的一个protected方法，代码中不能直接调用它 子类只能受保护的clone方法克隆他自己，为此必须...