* A class implements the <code>Cloneable</code> interface to * indicate to the {@linkjava.lang.Object#clone()} method that it * is legal for that method to make a * field-for-field copy of instances of that class. */publicinterfaceCloneable{ } 2.将clone()方法重写为public,之前也解释...
Thrown to indicate that the clone method in class Object has been called to clone an object, but that the object's class does not implement the Cloneable interface. C# 複製 [Android.Runtime.Register("java/lang/CloneNotSupportedException", DoNotGenerateAcw=true)] public class CloneNotSupported...
* contents of the fields are not themselves cloned. Thus, this method * performs a "shallow copy" of this object, not a "deep copy" operation. * <p> * The class {@codeObject} does not itself implement the interface * {@codeCloneable}, so calling the {@codeclone} method on an obje...
1. 简介在了解Object中的常用方法之前，我们先来看看Object类的源码，如下所示：/** * Class {@cod...
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, ...
问显式扩展Object类并调用object抛出错误的clone方法EN可以从包外部访问对象的受保护成员或构造函数，在包...
1.1 Java Object根类默认提供了clone方法: protected native Object clone() throws CloneNotSupportedException; 一个本地方法...方法时,构造方法并没有被调用,所以我说创建一个对象new和clone是两条路 public static void main(String[] args) throws CloneNotSupportedException...} 打印: CloneModel{name=’null...
Thrown to indicate that the clone method in class Object has been called to clone an object, but that the object's class does not implement the Cloneable interface. Applications that override the clone method can also throw this exception to indicate that an object could not or should not be...
overriding method should mimic the behavior of Object.clone: it should be declared protected, it should be declared to throw CloneNotSupportedException, and the class should not implement Cloneable. This gives subclasses the freedom to implement Cloneable or not, just as if they extended Object ...
Object obj = super.clone(); //utilize clone Object method Employee emp = (Employee) obj; // deep cloning for immutable fields emp.setProps(null); Map<String, String> hm = new HashMap<>(); String key; Iterator<String> it = this.props.keySet().iterator(); ...