Java-马士兵设计模式学习笔记-工厂模式-抽象工厂模式

一、概述

1.抽象工厂:当情况是需要产生一系列产品,若需更换产品,则要求一系列产品一起换,且要控制一系列产品的产生过程,此时可考虑抽象工厂模式。例:小明装修屋子,把电视、冰箱都替换掉,他这次需要把电视、冰箱换成三星的,下次装修可能要换成海尔的。此时可设计抽象类Telveison及Fridge负责产生产品,抽象工厂AbstractFactory负责产生一系列产品

PS:抽象工厂与普通工厂各自的优缺点:

(1)普通工厂容易在产品维度进行扩展,但产生系列产品时不方便,且易造成工厂类泛滥

(2)抽象工厂增加新产品时,要修改AbstractFactory等多处地方

 

二、类结构

1.Televison.java

2.Fridge.java

3.SamsumgTelevison.java

4.SamsungFridge.java

5.HaierTevevison.java

6.HaierFridge.java

7.AbstractFactory.java

8.SamsungFactory.java

9.HaierFactory.java

 

 

三、代码

1.Televison.java

public abstract class Televison {

	abstract void show();
}

  

2.Fridge.java

public abstract class Fridge {

	abstract void cool();
}

  

3.SamsumgTelevison.java

public class SamsungTelevison extends Televison {

	@Override
	public void show(){
		System.out.println("SamsungTelevison showing...........");
	}
}

  

4.SamsungFridge.java

public class SamsungFridge extends Fridge {

	@Override
	void cool() {
		System.out.println("SamsungFridge cooling");
	}

}

  

5.HaierTevevison.java

public class HaierTelevison extends Televison {

	@Override
	void show() {
		System.out.println("海尔电视 showinng...........");
	}

}

  

6.HaierFridge.java

public class HaierFridge extends Fridge {

	@Override
	void cool() {
		System.out.println("海尔冰箱冷却中............");
	}

}

  

7.AbstractFactory.java

public abstract class AbstractFactory {
	abstract Televison createTelevison();
	abstract Fridge createFridge();
}

  

8.SamsungFactory.java

public class SamsungFactory extends AbstractFactory {

	@Override
	Televison createTelevison() {
		return new SamsungTelevison();
	}

	@Override
	Fridge createFridge() {
			return new SamsungFridge();
	}

}

  

9.HaierFactory.java

 

public class HaierFactory extends AbstractFactory {

	@Override
	Televison createTelevison() {
		return new HaierTelevison();
	}

	@Override
	Fridge createFridge() {
		return new HaierFridge();
	}

}

  

10.Test.java

public class Test {

	@org.junit.Test
	public void test(){
		AbstractFactory factory = new SamsungFactory();
		Televison tv = factory.createTelevison();
		Fridge fridge = factory.createFridge();
		tv.show();
		fridge.cool();
		
		System.out.println("=======================================");
		
		factory = new HaierFactory();
		tv = factory.createTelevison();
		fridge = factory.createFridge();
		tv.show();
		fridge.cool();
	}
}

  

运行结果:

posted @ 2015-06-18 18:33  shamgod  阅读(725)  评论(0编辑  收藏  举报
haha