Java programming implementation object clone (copy) code details, java details
Clone: It's amazing to hear that the world's first cloned goat Dolly uses the Cell Nucleus transplantation technology to cultivate new individuals in adult cells of
One advantage of Java is that it removes the pointer concept, but many programmers often ignore the difference between objects and references in programming. This article will try to clarify this concept. In addition, Java cannot solve the problem
ArticleDirectory
Shallow vs. Deep cloning
Icloneable Interface
Type-safe clone
1. Clone manually
2. Clone with memberwiseclone
3. Clone with reflection
4. Clone with serialization
5. Clone with IL
6. Clone with
In-depth understanding of Object Clone and javascriptclone in JavaScript
JavaScript does not directly provide the Object Clone method. Therefore, when object B is changed in the following code, object a is changed.
A = {k1: 1, k2: 2, k3: 3 };
B =;
B.
1. parameter transfer
We all know that there are two methods for passing parameters: value transfer and reference transfer. In the object-oriented language of Java, how is it? According to the following procedure, we can draw a conclusion:
Class OBJ
Php object clone uses 1 .??? PHP5 defines a _ clone () object that will have the same attributes and methods as the original object. If you want to change the content of the original object after cloning, you need to re-write the original attributes
1 protected native Object clone () throws Clonenotsupportedexception;
1. The method is modified by native keyword
The native keyword in Java indicates that this method is a local method, "Java native description." Moreover, the native modified
PHP object clone clone keyword and __clone () method
The Clone keyword is used to clone an identical object, and the __clone () method overrides the original property and method.
Object cloning
Sometimes we need to use two or more of the same
Detailed description of object clone instances
name = $ name; $ this-> age = $ age; $ this-> salary = $ salary;} public function _ sleep () {return ['name', 'age'];} public function _ wakeup () {$ this-> age = 30;} public function hello () {return
PHP Object clone is used
1.?
? ? A __clone() is defined in PHP5 to create an object that has the same properties and methods as the original object. If you want to change the contents of the original object after cloning, you need to override the
PHP object clone clone keyword and __clone () method
The Clone keyword is used to clone an identical object, and the __clone () method overrides the original property and method.
Object cloning
Sometimes we need to use two or more of the same
This example describes the use of JavaScript object clone. Share to everyone for your reference. Specifically as follows:
Object.prototype.clone=function ()
{
var objclone=new this.constructor ();
This is to create an object for the same
This example describes the PHP object clone clone usage. Share to everyone for your reference, as follows:
Shallow clone: Only non-object non-resource data in the cloned object, that is, the object's property is stored in the object type, the clone
A. Java
Package second; public class B {public static void main (string [] ARGs) {c = new C (); C. I = 200; C. haha (); system. out. println ("==========="); C Cl = (c) C. clone (); CL. I = 500; CL. haha (); C. haha ();}}
B. Java
Package second;
/*Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression: x.clone() != xwill be true, and that the expression: x.clone().getClass(
PHP Object clone is used
1.?
? ? A __clone() is defined in PHP5 to create an object that has the same properties and methods as the original object. If you want to change the contents of the original object after cloning, you need to override the
This example describes the use of JavaScript object clone. Share to everyone for your reference. Specifically as follows:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27-28
Object.prototype.clone=function ()
I believe many students have used serializable, I believe in the project in general your project manager and you said remember in your domain class to implement serializable, or sometimes there will be some errors. But what exactly does serializable
This is the first of the introduction to clone technology. This article mainly introduces the basic knowledge of object clone technology.
Clone Basic Knowledge Reserve
In Java, mention of the clone technology, you must mention the
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.