java之多态(Polymorphic)、动态绑定(Dynamic Binding)、迟绑定(Late Binding)

public class TestPolymorphic{
    public static void main(String args[]){
    
        Animal animal = new Animal("animal");
        Cat cat = new Cat("cat","blue");
        Dog dog = new Dog("dog","black");
        
        Lily l1 = new Lily("l1",animal);
        Lily l2 = new Lily("l1",dog);
        
        l1.myAnimalEnjoy();
        l2.myAnimalEnjoy();
    }
}
class Lily{
    private String name;
    private Animal animal;
    public Lily(String name, Animal animal){
        this.name = name;
        this.animal = animal;
    }
    public void myAnimalEnjoy(){
        animal.enjoy();
    }
}
class Animal{
    private String name;
    public Animal(String name){
        this.name = name;
    }
    public void enjoy(){
        System.out.println("叫声~~~");
    }
}
class Dog extends Animal{
    
    private String forlorColor;
    public Dog(String name,String forlorColor){
        super(name);
        this.forlorColor = forlorColor;
    }
    public void enjoy(){
        System.out.println("dog叫声~~~");
    }
}
class Cat extends Animal{
    
    private String eyesColor;
    public Cat(String name,String eyesColor){
        super(name);
        this.eyesColor = eyesColor;
    }
    public void enjoy(){
        System.out.println("cat叫声~~~");
    }
}