java例程练习（多态/动态绑定/迟绑定）

//	实现多态三个条件：
//	1，继承
//	2，父类引用指向子类对象
//	3，重写

public class Test {
public static void main(String[] args) {
Cat c = new Cat("KIKI", "Blue");
Dog d = new Dog("Tom", "Black");

Lady l1 = new Lady("Sheery", c);
Lady l2 = new Lady("Dianl", d);

l1.myPetEnjoy();
l2.myPetEnjoy();
}
}

class Animal {
protected String name;
Animal(String name) {
this.name = name;
}

public void enjoy() {
System.out.println("Animal cry......");
}
}

class Cat extends Animal {
protected String eyeColor;
Cat(String n, String c) {
super(n);
this.eyeColor = c;
}

public void enjoy() {
System.out.println("Cat cry......");
}
}

class Dog extends Animal {
protected String furColor;
Dog(String n, String c) {
super(n);
this.furColor = c;
}

public void enjoy() {
System.out.println("Dog cry......");
}
}

class Lady {
protected String name;
private Animal pet;

Lady(String name, Animal pet) {
this.name = name;
this.pet = pet;
}

public void myPetEnjoy() {
pet.enjoy();
}
}