抽象工厂模式

感谢https://blog.youkuaiyun.com/h28496/article/details/44258601和https://blog.youkuaiyun.com/lingfengtengfei/article/details/12374469

看图

如果通过工厂方法模式来创建上图9个对象，需要建立一个抽象的工厂类PhoneFactory。然后再用9个子工厂类去实现它。

如果通过抽象工厂模式实现

多个抽象产品类

public abstract class IPhone {

}

public abstract class Samsung {

}

多个具体产品类

public class IPhone_16G extends IPhone{
	public IPhone_16G() {
		System.out.println("IPhone_16G");
	}
}

public class IPhone_32G extends IPhone{
	public IPhone_32G() {
		System.out.println("IPhone_32G");
	}
}

public class Samsung_16G extends Samsung{
	public Samsung_16G() {
		System.out.println("Samsung_16G");
	}
}

public class Samsung_32G extends Samsung{
	public Samsung_32G() {
		System.out.println("Samsung_32G");
	}
}

一个抽象工厂类

import abstractFactory.product.IPhoneProduct.IPhone;
import abstractFactory.product.SamsungProduct.Samsung;

public abstract class AbstractFactory {
	public abstract IPhone createIPhone();
	public abstract Samsung createSamsung();
}

多个具体工厂类

import abstractFactory.product.IPhoneProduct.IPhone;
import abstractFactory.product.IPhoneProduct.IPhone_32G;
import abstractFactory.product.SamsungProduct.Samsung;
import abstractFactory.product.SamsungProduct.Samsung_32G;

public class Factory_32G extends AbstractFactory {

	@Override
	public IPhone createIPhone() {
		return new IPhone_32G();
	}

	@Override
	public Samsung createSamsung() {
		return new Samsung_32G();
	}

}

import abstractFactory.product.IPhoneProduct.IPhone;
import abstractFactory.product.IPhoneProduct.IPhone_16G;
import abstractFactory.product.SamsungProduct.Samsung;
import abstractFactory.product.SamsungProduct.Samsung_16G;

public class Factory_16G extends AbstractFactory{

	@Override
	public IPhone createIPhone() {
		return new IPhone_16G();
	}

	@Override
	public Samsung createSamsung() {
		return new Samsung_16G();
	}

}

测试一下

import abstractFactory.factory.AbstractFactory;
import abstractFactory.factory.Factory_16G;
import abstractFactory.product.IPhoneProduct.IPhone;
import abstractFactory.product.SamsungProduct.Samsung;

public class Main {
	public static void main(String[] args) {
		AbstractFactory factory_16g = new Factory_16G();
		Samsung samsung_16g = factory_16g.createSamsung();
		IPhone iphone_16g = factory_16g.createIPhone();
	}
}

输出

Samsung_16G
IPhone_16G