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win2000 AdvSer JCreator Pro 2.5 JDK 1.4.2 ================================ /* * @(#)ClsDyna.java 1.0 04/12/25 * * You can modify the template of this file in the * directory ../JCreator/Templates/Template_1/Project_Name.java * * You can also create your own project template by making a new * folder in the directory ../JCreator/Template/. Use the other * templates as examples. * */ package myprojects.clsdyna; import java.util.*; class ClsDyna { public ClsDyna() { } public static void main(String args[]) { System.out.println("Starting ClsDyna..."); person pr=new boy("万青"); person pg=new girl("李敏"); System.out.println(pr.toString()); System.out.println(pg.toString()); System.out.println("=========="); personFactory pc=new personFactory("吴波",true,33); person tc=pc.GetPerson(); System.out.println(tc.getName()); System.out.println(tc.toString()); } } abstract class person { protected String name; protected boolean sex; protected int age; protected int id; private static int pid; static { pid=1000; } public static int PersonID() { return pid++; } public person(String na,boolean sx,int ag) { /* //it also can write like this name=na;sex=sx; age=ag; id=person.PersonID(); */ this(na,ag); if(!sx) this.setSex(false); } public person(String na,int ag) { name=na;age=ag;sex=true;//this(na); id=person.PersonID(); } public person(String na) { name=na;age=18;sex=true; id=person.PersonID(); } public int getId() { return id; } public String getName() { return name; } public void setName(String na) { name=na; } public int getAge() { return age; } public void setAge(int dg) { age=dg; } public boolean isSex() { return sex; } protected void setSex(boolean sx) { sex=sx; } public String toString() { return "ID:"+id+";Name:"+name+";Age:"+age+";Sex:"+ (sex?"男":"女"); } abstract void sayHello(); } class boy extends person { public boy(String na,int age) { super(na,age); this.setSex(true); } public boy(String na) { super(na); this.setSex(true); } public void sayHello() { System.out.println(this.toString()); } } class girl extends person { public girl(String na,int age) { super(na,age); this.setSex(false); } public girl(String na) { super(na); this.setSex(false); } public void sayHello() { System.out.println(this.toString()); } } class personFactory { protected person pBoyGirl; public personFactory(String na,boolean sx,int ag) { if(sx) pBoyGirl=new boy(na,ag); else pBoyGirl=new girl(na,ag); } public person GetPerson() { return pBoyGirl; } } 返回类别: 教程 上一教程: 纪念Java经典的SandBox概念 下一教程: JUnir源码分析（一） 您可以阅读与"java 多态与抽象工厂-----------菜鸟学飞第二步"相关的教程: · java 多态与抽象工厂-----------菜鸟学飞第二步 · java接口用法学习----------------java菜鸟学飞第一步 · java接口用法学习----------------java菜鸟学飞第一步 · 《Java编程思想》(第二版)第07章：多态(polymorphism) · 《Java编程思想》(第二版)第7章：多态(polymorphism) |
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