为什么这样无法解决问题

Question

public static void main(String[] args) { // TODO Auto-generated method stub Dog dog = new Dog(); Cat cat=new Cat(); Animal animal=dog; Animal animal1=cat; if(animal instanceof Dog){ Dog dog2=(Dog)animal; }else{ System.out.println("无法进行类型转换"); } if(animal instanceof Cat){ Cat cat1=(Cat)animal1; }else{ System.out.println("无法进行类型转换"); } }}

Answer 1

你连问题都没说清楚怎么回答呢