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 [设计模式]『蚂蚁学模式』之实例化简单工厂、工厂方法模式
软件技术
lhwork 发表于 2007/1/10 9:34:04 |
| 我想“一切从实例开始”是我最易接受的方式。网上有太多的理论和经验总结，于已而言，吸收亦成乐事。先看实例，很简单。UML图也懒得画了，更喜欢CRC卡片的方式。一、简单工厂模式1. com.cleversoft.designpatterns.simplefactory.Motor.java
500)this.width=500'>package com.cleversoft.designpatterns.simplefactory;500)this.width=500'>public interface Motor 500)this.width=500'>{ public void run();}2. com.cleversoft.designpatterns.simplefactory.Bus.java
500)this.width=500'>package com.cleversoft.designpatterns.simplefactory;500)this.width=500'>public class Bus implements Motor 500)this.width=500'>{ public Bus() 500)this.width=500'>{ } public void run() 500)this.width=500'>{ System.out.println("This is a Bus!"); }}3. com.cleversoft.designpatterns.simplefactory.Car.java
500)this.width=500'>package com.cleversoft.designpatterns.simplefactory;500)this.width=500'>public class Car implements Motor500)this.width=500'>{ public Car()500)this.width=500'>{ } public void run()500)this.width=500'>{ System.out.println("This is a Car!"); }}4. com.cleversoft.designpatterns.simplefactory.MotorFactory.java
500)this.width=500'>package com.cleversoft.designpatterns.simplefactory;500)this.width=500'>public class MotorFactory 500)this.width=500'>{ public static Motor factory(String which) 500)this.width=500'>{ if (which.equalsIgnoreCase("bus")) 500)this.width=500'>{ return new Bus(); } else if (which.equalsIgnoreCase("car")) 500)this.width=500'>{ return new Car(); } return null; }}5. com.cleversoft.designpatterns.simplefactory.Main.java
500)this.width=500'>package com.cleversoft.designpatterns.simplefactory;500)this.width=500'>public class Main 500)this.width=500'>{ /** *//** * @param args */ public static void main(String[] args) 500)this.width=500'>{ // TODO Auto-generated method stub MotorFactory mf = new MotorFactory(); Motor m = mf.factory("bus"); m.run(); }}二、工厂方法模式1. com.cleversoft.designpatterns.factorymethod.MotorFactory.java
500)this.width=500'>package com.cleversoft.designpatterns.factorymethod;500)this.width=500'>public interface MotorFactory 500)this.width=500'>{ public Motor factory();}2. com.cleversoft.designpatterns.factorymethod.Motor.java
500)this.width=500'>package com.cleversoft.designpatterns.factorymethod;500)this.width=500'>public interface Motor 500)this.width=500'>{ public void run();}3. com.cleversoft.designpatterns.factorymethod.BusFactory.java
500)this.width=500'>package com.cleversoft.designpatterns.factorymethod;500)this.width=500'>public class BusFactory implements MotorFactory500)this.width=500'>{ public Motor factory()500)this.width=500'>{ return new Bus(); }}4. com.cleversoft.designpatterns.factorymethod.CarFactory.java
500)this.width=500'>package com.cleversoft.designpatterns.factorymethod;500)this.width=500'>public class CarFactory implements MotorFactory500)this.width=500'>{ public Motor factory()500)this.width=500'>{ return new Car(); }}5. com.cleversoft.designpatterns.factorymethod.Bus.java
500)this.width=500'>package com.cleversoft.designpatterns.factorymethod;500)this.width=500'>public class Bus implements Motor 500)this.width=500'>{ public Bus() 500)this.width=500'>{ } public void run() 500)this.width=500'>{ System.out.println("This is a Bus!"); }}6. com.cleversoft.designpatterns.factorymethod.Car.java
500)this.width=500'>package com.cleversoft.designpatterns.factorymethod;500)this.width=500'>public class Car implements Motor 500)this.width=500'>{ public Car() 500)this.width=500'>{ } public void run() 500)this.width=500'>{ System.out.println("This is a Car!"); }}7. com.cleversoft.designpatterns.factorymethod.Main.java
500)this.width=500'>package com.cleversoft.designpatterns.factorymethod;500)this.width=500'>public class Main 500)this.width=500'>{ /** *//** * @param args */ public static void main(String[] args) 500)this.width=500'>{ // TODO Auto-generated method stub MotorFactory mf = new BusFactory(); Motor m = mf.factory(); m.run(); }}参考资料：1. http://terrylee.cnblogs.com/archive/2006/01/04/310716.html2. 《Java与模式》 |
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