object clone

In the book "Java and Patterns" of Dr. Shanhong, this describes the prototype (Prototype) pattern:The prototype mode belongs to the creation mode of the object. By giving a prototype object to indicate the type of all objects created, and then

Realized it by itself: Copy Code code as follows: public class A implements cloneable { Public String str[]; A () {str = new STRING[2];} Public Object Clone () {A o = null;try {o = (A) super.clone ();catch

Deep copy (deep copy) and shallow copy (shallow copy) are two more common concepts, especially in the C + + language, if not understood, it will be in the delete when the problem, but we are fortunate to use Java. Although Java automatically manages

1. Shallow copy and deep copy Concepts ⑴ Shallow copy (shallow clone)       All variables of a replicated object contain the same value as the original object , and all references to other objects still point to the original object. In other

The Cloneable interface is a markup interface that has no content, defined as follows:Package Java.lang;Pubilc Interface cloneable{}Here, analyze the usage of this interfaceMeaning of Java clone (or target)Suppose X is a Non-empty object and should

Objective Java Cloning (clone) is one of the features of the Java language, but it is rarely used in practice. But sometimes cloning can be more convenient and more efficient. For clones (clone), Java has some limitations: 1. The cloned class

1. ConceptThe clone in Java is divided into:A: Shallow copy (Shallow clone): Shallow copy copies only the objects that you are considering, not the objects that it refers to.B: Deep copy (Deep clone): Deep copy copies the objects referenced by the

The object class is the superclass of all classes. That is to say, every class in Java is extended by the object. therefore, every time you create an object, it will have all the methods in the object class. let's take a look at java. lang. what are

I wrote a technical blog for the first time. I am very skilled and have a limited level. I would like to give you some advice on anything wrong. LargeAll knowCIASSIt is a reference type. If a referenced variable is assigned to another referenced

Although we do not need to worry about memory management and garbage collection in. NET Framework, we should still understand them to optimize our applications. At the same time, we also need to have some basic knowledge of memory management

Java clone () method instructions, javaclone One advantage of Java is that it removes the pointer concept, but many programmers often ignore the difference between objects and references in programming, in addition, Java cannot solve the problem of

Abstract: 1. This article will introduce in detail the principles of the prototype mode and the application of the actual code, especially the Android system code. Outline: 1. Introduce the prototype 2. Concepts and

1. OverviewIntent:We use existing objects as prototypes. Users can create new objects by copying these prototypes.Usage:The prototype mode can be used when a system is created, constructed, and expressed independently of a product. In prototype mode,

Prototype mode (PROTOTYPE), which specifies the kind of object created with the prototype instance, and creates a new object by copying the prototypes.Prototype mode is actually the creation of another customizable object from one object without the

Shallow copy: copy an object. If the object exists inside the object and points to another object, no value is assigned. Deep copy: in addition to the value assignment object itself, it also copies the objects referenced inside the object. To

(Conversion) Java object cloning (Clone), Cloneable interface, Serializable interface in-depth discussion, phpclone object cloning Address: http://blog.csdn.net/kenthong/article/details/5758884 Part I Let's just start Part II.   Part II When talking

An in-depth discussion of Java object Cloning (clone) and cloneable interface and serializable interfacePart IThere's nothing to say, just start Part II.Part IIWhen it comes to cloning an object, you have to say why you want to clone the object. All

All those who have written about Java know that the reference of this object and object clone are completely unnecessary. As an object-oriented language, Python is not an example, most of his declaration or use of a variable is a reference to the

There is an empty interface in the 1.java interface called the identity interface, and this interface value acts as an identity. 2. To implement a Java object clone, you need to use the object class protected Object Clone () throws

1. Shallow copy and deep copy concept(1) shallow copy (shallow clone)A shallow copy is also called shallow copy, and all the fields in the object are copied to the new object (copy). Where the value of the Value Type field (the original type in Java