Email类是具体原型类,也是Object类的子类。在Java语言中,只有实现了Cloneable接口的类才能够使用clone()方法来进行复制,因此Email类实现了Cloneable接口。在Email类中覆盖了Object的clone()方法,通过直接或者间接调用Object的clone()方法返回一个克隆的原型对象。在Email类中定义了一个成员对象attachment,其类型为At...
深拷贝: 对值类型的成员变量进行值的复制,对引用类型的成员变量也进行引用对象的复制. 类图: 实例一:浅拷贝 public class Prototype implements Cloneable { private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } public Object clone() {...
import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.OptionalDataException; import java.io.Serializable; public class Person implements Serializable{ // 姓名 private St...
客户端角色: publicclassPrototypePatternTest{publicstaticvoidmain(String[]args)throwsCloneNotSupportedException{MoviemoviePrototype=newMovie();Moviemovie=moviePrototype.clone();System.out.println(movie);AlbumalbumPrototype=newAlbum();Albumalbum=albumPrototype.clone();System.out.println(album);ShowshowPrototype...
原型模式(Prototype Pattern)是用于创建重复的对象,同时又能保证性能。这种类型的设计模式属于创建型模式,它提供了一种创建对象的最佳方式。 这种模式是实现了一个原型接口,该接口用于创建当前对象的克隆。当直接创建对象的代价比较大时,则采用这种模式。例如,一个对象需要在一个高代价的数据库操作之后被创建。我们可以...
Aprototypeis a template of any object before the actual object is constructed. In Java, it also has the same meaning.The prototype design pattern is used in scenarios where an application needs to create a number of instances of a class that have almost the same state or differ very little...
The classes and/or objects participating in this pattern are: Prototype(ColorPrototype) declares an interface for cloning itself ConcretePrototype(Color) implements an operation for cloning itself Client(ColorManager) creates a new object by asking a prototype to clone itself ...
The Prototype design pattern is the one in question. It allows an object to create customized objects without knowing their class or any details of how to create them. Up to this point it sounds a lot like the Factory Method pattern, the difference being the fact that for the Factory the...
All the 23 (GoF) design patterns implemented in Javascript with Real World Example using Node.js APIs javascript construction factory prototype resource composite design-patterns observer-pattern complex node-js gof concrete design-thinking factory-pattern gang-of-four facade-pattern composes software-arc...
Prototype pattern UML diagram Given a key, the program creates an object of the required type, not by instantiation, but by copying a clean instance of the class. This process of copying, or cloning, can be repeated over and over again. The copies, or clones, are objects in their own ...