使用工厂设计模式实例化两个不相关的子类？

// 抽象工厂类
abstract class AbstractFactory {
    public abstract Product createProduct();
}

// 子类工厂1
class ConcreteFactory1 extends AbstractFactory {
    public Product createProduct() {
        return new ConcreteProduct1();
    }
}

// 子类工厂2
class ConcreteFactory2 extends AbstractFactory {
    public Product createProduct() {
        return new ConcreteProduct2();
    }
}

// 抽象产品类
abstract class Product {
    public abstract void operation();
}

// 子类产品1
class ConcreteProduct1 extends Product {
    public void operation() {
        System.out.println("ConcreteProduct1 operation");
    }
}

// 子类产品2
class ConcreteProduct2 extends Product {
    public void operation() {
        System.out.println("ConcreteProduct2 operation");
    }
}

// 客户端代码
public class Client {
    public static void main(String[] args) {
        AbstractFactory factory1 = new ConcreteFactory1();
        Product product1 = factory1.createProduct();
        product1.operation();

        AbstractFactory factory2 = new ConcreteFactory2();
        Product product2 = factory2.createProduct();
        product2.operation();
    }
}