抽象工厂模式与工厂方法模式最大的区别在于，工厂方法模式针对的是一个产品等级结构，而抽象工厂模式则需要面对多个产品等级结构。
产品等级：如一个抽象类是空调，其子类有海尔空调，美的空调；如一个抽象类是洗衣机，其子类有海尔洗衣机，美的洗衣机。
产品族：产品族是指由同一个工厂生产的，位于不同产品等级结构中的一组产品。如海尔生产的冰箱和洗衣机。
例子如下：
代码如下：
1.定义AbstractFactory
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| package com.notejava.factory.abstraction;
public interface AbstractFactory {
WashingMachine createWashingMachine();
AirConditioner createAirConditioner();
}
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2.定义HairFactory
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| package com.notejava.factory.abstraction;
public class HairFactory implements AbstractFactory {
public WashingMachine createWashingMachine() {
return new HairWashingMachine();
}
public AirConditioner createAirConditioner() {
return new HairAirConditioner();
}
}
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3.定义MideaFactory
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| package com.notejava.factory.abstraction;
public class MideaFactory implements AbstractFactory {
public WashingMachine createWashingMachine() {
return new MideaWashingMachine();
}
public AirConditioner createAirConditioner() {
return new MideaAirConditioner();
}
}
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4.定义空调接口AirConditioner
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| package com.notejava.factory.abstraction;
public interface AirConditioner {
void makeAir();
}
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5.定义洗衣机接口
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| package com.notejava.factory.abstraction;
public interface WashingMachine {
void wash();
}
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6.定义海尔空调
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| package com.notejava.factory.abstraction;
public class HairAirConditioner implements AirConditioner {
public void makeAir() {
System.out.println("HairAirConditioner");
}
}
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7.定义海尔洗衣机
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| package com.notejava.factory.abstraction;
public class HairWashingMachine implements WashingMachine {
public void wash() {
System.out.println("HairWashingMachine");
}
}
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8.定义美的空调
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| package com.notejava.factory.abstraction;
public class MideaAirConditioner implements AirConditioner {
public void makeAir() {
System.out.println("MideaAirConditioner");
}
}
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9.定义美的洗衣机
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| package com.notejava.factory.abstraction;
public class MideaWashingMachine implements WashingMachine {
public void wash() {
System.out.println("MideaWashingMachine");
}
}
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10.定义Demo类
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| package com.notejava.factory.abstraction;
public class Demo {
public static void main(String\[\] args) {
HairFactory hairFactory = new HairFactory();
hairFactory.createAirConditioner().makeAir();
hairFactory.createWashingMachine().wash();
MideaFactory mideaFactory = new MideaFactory();
mideaFactory.createAirConditioner().makeAir();
mideaFactory.createWashingMachine().wash();
}
}
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