工厂方法模式

工厂方法模式

public abstract class Product {

    public void method1(){
        
    }
    
    public abstract void method2();

}

public class ConcreteProduct1 extends Product {

    public void method2(){
        System.out.println("product1");
    }

}

public class ConcreteProduct2 extends Product{

    public void method2(){
        System.out.println("product2");
    }
}

public abstract class Creator {

    public abstract <T extends Product> T createProduct(Class<T> c);
}

public class ConcreteCreator extends Creator {

    @SuppressWarnings("unchecked")
    public <T extends Product> T createProduct(Class<T> c) {

        Product product = null;
        try {
            product = (Product) Class.forName(c.getName()).newInstance();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return (T) product;
    }

}

public class Client {

    public static void main(String[] args){
        Creator creator = new ConcreteCreator();
        Product product1 = creator.createProduct(ConcreteProduct1.class);
        Product product2 = creator.createProduct(ConcreteProduct2.class);
        product1.method2();
        product2.method2();
    }
}