工厂模式（三）抽象工厂模式

下面用两个例子来说明：

螺丝螺母的例子

public interface Screw {

	public void useScrew();
}

public class Screw6 implements Screw{

	@Override
	public void useScrew() {
		System.out.println("使用6号螺丝");
	}
}

public class Screw8 implements Screw{

	@Override
	public void useScrew() {
		System.out.println("使用8号螺丝");
	}
}

public interface Nut {

	public void useNut();
}

public class Nut6 implements Nut{

	@Override
	public void useNut() {
		System.out.println("使用6号螺母");	
	}
}

public class Nut8 implements Nut{

	@Override
	public void useNut() {
		System.out.println("使用8号螺母");	
	}
}

public interface Product {

	public Screw createScrew();
	public Nut createNut();
}

public class Factory6 implements Product{

	@Override
	public Screw createScrew() {
		
		return new Screw6();
	}

	@Override
	public Nut createNut() {
		
		return new Nut6();
	}
}

public class Factory8 implements Product{

	@Override
	public Screw createScrew() {
		
		return new Screw8();
	}

	@Override
	public Nut createNut() {
		
		return new Nut8();
	}
}

public class Store {

	public static void main(String[] args) {
		useProduct(new Factory6());
		useProduct(new Factory8());
	}
	
	public static void useProduct(Product product){
		Screw screw = product.createScrew();
		screw.useScrew();
		Nut nut = product.createNut();
		nut.useNut();
	}
}

家用电器的例子

public interface BingXiang {

	public void useBX();
}

public class HaierBX implements BingXiang{

	@Override
	public void useBX() {
		// TODO Auto-generated method stub
		System.out.println("我正在使用海尔冰箱。");
	}
}

public class RongsBX implements BingXiang{

	@Override
	public void useBX() {
		// TODO Auto-generated method stub
		System.out.println("我正在使用容声冰箱。");
	}

}

public class XiaomBX implements BingXiang{

	@Override
	public void useBX() {
		
		System.out.println("我正在使用小米冰箱。");
	}

}

public interface TV {

	public void watchTV();
}

public class HaierTV implements TV{

	@Override
	public void watchTV() {
		// TODO Auto-generated method stub
		System.out.println("正在用海尔电视观看节目");
	}

}

public class RongsTV implements TV {

	@Override
	public void watchTV() {
		// TODO Auto-generated method stub
		System.out.println("正在用容声电视观看节目");
	}

}

public class XiaomTV implements TV{

	@Override
	public void watchTV() {
		// TODO Auto-generated method stub
		System.out.println("正在用小米电视观看节目");
	}

}

/**
 * TODO 家电接口，主要生产家电
 * 
 * @author ZhangPeng
 * @date 2021年6月2日 下午2:52:09
 */
public interface JiaDianProduct {

	public BingXiang createBX();
	
	public TV createTV();
}

public class HaierFactory implements JiaDianProduct{

	@Override
	public BingXiang createBX() {
		// TODO Auto-generated method stub
		return new HaierBX();
	}

	@Override
	public TV createTV() {
		// TODO Auto-generated method stub
		return new HaierTV();
	}

}

public class RongsFactory implements JiaDianProduct{

	@Override
	public BingXiang createBX() {
		// TODO Auto-generated method stub
		return new RongsBX();
	}

	@Override
	public TV createTV() {
		// TODO Auto-generated method stub
		return new RongsTV();
	}

}

public class XiaomFactory implements JiaDianProduct{

	@Override
	public BingXiang createBX() {
		// TODO Auto-generated method stub
		return new XiaomBX();
	}

	@Override
	public TV createTV() {
		// TODO Auto-generated method stub
		return new XiaomTV();
	}

}

public class Customer {

	public static void main(String[] args) {
//		buyJiaDian(new XiaomFactory());
		buyJiaDian(new HaierFactory());
	}
	
	public static void buyJiaDian(JiaDianProduct product){
		BingXiang bx = product.createBX();
		bx.useBX();
		TV tv = product.createTV();
		tv.watchTV();
	}
}

针对此图
比如说当多一个产品等级的时候，例如京东，只需要建京东工厂以及创建对应的产品即可，但是当多一个产品簇的时候，例如烘干机，那么每个产品单位都需要新加方法。