•   ConcreteFactory：创建抽象工厂类的两个实现类，WhiteAnimalFactory和BlackAnimalFactory

package com.lyz.design.abstractfactory;
/*** IAnimalFactory抽象工厂的实现类* @author liuyazhuang**/
public class WhiteAnimalFactory implements IAnimalFactory {public ICat createCat() {return new WhiteCat();}public IDog createDog() {return new WhiteDog();}}

package com.lyz.design.abstractfactory;
/*** IAnimalFactory抽象工厂的实现类* @author liuyazhuang*/
public class BlackAnimalFactory implements IAnimalFactory {@Overridepublic ICat createCat() {return new BlackCat();}public IDog createDog() {return new BlackDog();}}

•   AbstractProduct：定义抽象工厂中要生产的抽象产品接口ICat和IDog

package com.lyz.design.abstractfactory;
/*** 类图中定义的AbstractProduct* 指定工厂生产的产品* @author liuyazhuang**/
public interface ICat {/*** 定义方法*/void eat();
}

package com.lyz.design.abstractfactory;
/*** 类图中定义的AbstractProduct* 指定工厂生产的产品* @author liuyazhuang**/
public interface IDog {/*** 定义方法*/void eat();
}

•   ConcreteProduct：创建产品的实现类BlackCat、BlackDog、WhiteCat、WhiteDog

package com.lyz.design.abstractfactory;
/*** ICat接口的实现类* @author liuyazhuang**/
public class BlackCat implements ICat {@Overridepublic void eat() {System.out.println("The black cat is eating!");}
}

package com.lyz.design.abstractfactory;/*** IDog的实现类* @author liuyazhuang*/
public class BlackDog implements IDog {@Overridepublic void eat() {System.out.println("The black dog is eating");}
}

package com.lyz.design.abstractfactory;
/*** ICat的实现类* @author liuyazhuang**/
public class WhiteCat implements ICat {@Overridepublic void eat() {System.out.println("The white cat is eating!");}
}

package com.lyz.design.abstractfactory;
/*** IDog的实现类* @author liuyazhuang**/
public class WhiteDog implements IDog {@Overridepublic void eat() {System.out.println("The white dog is eating!");}}

•   Client：定义一个测试类Test

package com.lyz.design.abstractfactory;/*** 测试类* @author liuyazhuang**/
public class Test {public static void main(String[] args) {IAnimalFactory blackAnimalFactory = new BlackAnimalFactory();ICat blackCat = blackAnimalFactory.createCat();blackCat.eat();IDog blackDog = blackAnimalFactory.createDog();blackDog.eat();IAnimalFactory whiteAnimalFactory = new WhiteAnimalFactory();ICat whiteCat = whiteAnimalFactory.createCat();whiteCat.eat();IDog whiteDog = whiteAnimalFactory.createDog();whiteDog.eat();}
}

• 输出结果

The black cat is eating!
The black dog is eating
The white cat is eating!
The white dog is eating!

七、总结