自学java，在其多态方面的一个问题

public class polymorphicDemo{
    public static void main(String [] args){
        Animal animal=new Animal("动物");
        Animal c=new Cat("招财猫","黑黄色");
        Animal d=new Dog("来福","黑色");
        System.out.println(animal.getName());
        System.out.println(c.GetEyesColor());
        System.out.println(d.getFurColor());
        System.out.println(animal instanceof Animal);
        System.out.println(c instanceof Animal);
        System.out.println(d instanceof Animal);
        System.out.println(animal instanceof Cat);
    }
}
class Animal{
    private String name;
    public Animal(String name){
        this.name=name;
    }
    public String getName(){
        return name;
    }
}
class Cat extends Animal{
    private String eyesColor;
    public Cat(String name,String eyesColor){
        super(name);
        this.eyesColor=eyesColor;
    }
    public String GetEyesColor(){
        return eyesColor+"的"+super.getName();
    }
}
class Dog extends Animal{
    private String furColor;
    public Dog(String name,String furColor){
        super(name);
        this.furColor=furColor;
    }
    public String getFurColor(){
        return furColor+"的"+super.getName();
    }
}