03.创建型————抽象工厂模式

package Create.c.AbstractFactory;

//业务接口
public interface Salary {
	void calcSalary();
}

　　

package Create.c.AbstractFactory;

//业务接口
public interface Tax {
	void calcTax();
}

　　

package Create.c.AbstractFactory;

//业务实现类
public class HeBeiTax implements Tax {

	@Override
	public void calcTax() {
		// TODO Auto-generated method stub
		System.out.println("开始计算河北子公司的税收！");
	}

}

　　

package Create.c.AbstractFactory;

//业务实现类
public class HeBeiSalary implements Salary {

	@Override
	public void calcSalary() {
		// TODO Auto-generated method stub
		System.out.println("开始计算河北子公司的薪资！");
	}

}

　　

package Create.c.AbstractFactory;

//业务实现类
public class GuangDongTax implements Tax {

	@Override
	public void calcTax() {
		// TODO Auto-generated method stub
		System.out.println("开始计算广东子公司的税收!");
	}

}

　　

package Create.c.AbstractFactory;


//业务实现类
public class GuangDongSalary implements Salary {

	@Override
	public void calcSalary() {
		// TODO Auto-generated method stub
		System.out.println("开始计算广东子公司的薪资!");
	}

}

　　

package Create.c.AbstractFactory;

//工厂接口
public interface Factory {
  Salary createSalary();
  Tax createTax();
}

　　

package Create.c.AbstractFactory;

//业务实现类工厂类
public class HeBeiFactory implements Factory {

	@Override
	public Salary createSalary() {
		// TODO Auto-generated method stub
		return new HeBeiSalary();
	}

	@Override
	public Tax createTax() {
		// TODO Auto-generated method stub
		return new HeBeiTax();
	}

}

　　

package Create.c.AbstractFactory;


//业务实现类工厂类
public class GuangDongFactory implements Factory {

	@Override
	public Salary createSalary() {
		// TODO Auto-generated method stub
		return new GuangDongSalary();
	}

	@Override
	public Tax createTax() {
		// TODO Auto-generated method stub
		return new GuangDongTax();
	}

}

　　

package Create.c.AbstractFactory;


//业务调用类
public class Client {
public static void main(String[] args) {
	Factory fa = new GuangDongFactory();
	Salary sa = fa.createSalary();
	Tax tax =  fa.createTax();
	sa.calcSalary();
	tax.calcTax();
	
	fa = new HeBeiFactory();
	sa = fa.createSalary();
	tax =fa.createTax();
	sa.calcSalary();
	tax.calcTax();
	
	
}
}

　　

优点：所有实现类设计到一个工厂类里面，客户端调用变得非常简单，并且如果需要更换一个系列的产品，只需要更换一个工厂类即可

缺点：如果涉及需求变更或添加，则需要修改抽象工厂类，并同时修改实现这个抽象工厂类的具体实现类，添加额外编码的工作量(跟工厂方法模式相同)