简单工厂模式-java描述

//抽象商品角色
interface AbstractProduct {
//抽象方法
void show();
}

public class SpecificProductA  implements AbstractProduct{
@Override
public void show() {
// TODO Auto-generated method stub
System.out.println("I am "+getClass().getName());
}
}

//静态工厂
public class StaticFactory {

public static AbstractProduct getProduct(
Class<? extends AbstractProduct> clazz) {//利用泛型对参数进行限制，要求参数必须继承AbstractProduct
//1.声明抽象商品
AbstractProduct product = null;
try {

//2.对商品进行反射
product = (AbstractProduct) clazz.newInstance();

} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return product;
}
}

public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
AbstractProduct product =null;

product=StaticFactory.getProduct(SpecificProductA.class);
product.show();
product=StaticFactory.getProduct(SpecificProductB.class);
product.show();
product=StaticFactory.getProduct(SpecificProductC.class);
product.show();

}
}