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原型模式(Prototype),用原型实例指定创建对象的种类,并且通过拷贝这些原型创建新的对象。
原型模式其实就是从一个对象再创建另外一个可定制的对象,而且不需知道任何创建的细节。
基本类型与引用类型的区别于关系在efficient java。
http://www.cnblogs.com/linkarl/p/4785329.html
浅复制:对象的引用仍然指向原来的对象
深复制:把引用对象的变量指向复制过的新对象
我认为一般深复制比较常用。
package prototype; public class WorkExperience implements Cloneable { private String workDate; private String company; public String getWorkDate() { return workDate; } public void setWorkDate(String workDate) { this.workDate = workDate; } public String getCompany() { return company; } public void setCompany(String company) { this.company = company; } public Object Clone() throws CloneNotSupportedException { return (Object) this.clone(); } }
package prototype; public class Resume implements Cloneable { private String name; private WorkExperience workExperience; public Resume(String name) { this.name = name; workExperience = new WorkExperience(); } private Resume(WorkExperience workExperience) throws CloneNotSupportedException { this.workExperience = (WorkExperience) workExperience.Clone(); } public WorkExperience getWorkExperience() { return workExperience; } public void setWorkExperience(String workData, String company) { workExperience.setWorkDate(workData); workExperience.setCompany(company); } public void Display() { System.out.println(name); System.out.println("WorkExperience: " + workExperience.getWorkDate() + workExperience.getCompany()); } public Object Clone() throws CloneNotSupportedException { Resume resume = new Resume(this.workExperience); resume.name = this.name; return resume; } public static void main(String[] args) throws CloneNotSupportedException { Resume a = new Resume("a"); a.setWorkExperience("workData", "company"); Resume b = (Resume) a.Clone(); b.setWorkExperience("b-workData", "company"); Resume c = (Resume) b.Clone(); c.setWorkExperience("c-workData", "company"); a.Display(); b.Display(); c.Display(); } }
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原文地址:http://www.cnblogs.com/linkarl/p/4833785.html