class Dog extends Animal {
public void eat() {
System.out.println("狗吃肉");
}
public void lookDoor() {
System.out.println("狗看门");
}
}
class Cat extends Animal {
public void eat() {
System.out.println("猫吃鱼");
}
public void playGame() {
System.out.println("猫捉迷藏");
}
}
class DuoTaiTest {
public static void main(String[] args) {
//定义为狗
Animal a = new Dog();
a.eat();
System.out.println("--------------");
//还原成狗
Dog d = (Dog)a;
d.eat();
d.lookDoor();
System.out.println("--------------");
//变成猫
a = new Cat();
a.eat();
System.out.println("--------------");
//还原成猫
Cat c = (Cat)a;
c.eat();
c.playGame();
System.out.println("--------------");
//演示错误的内容
//Dog dd = new Animal();
//Dog ddd = new Cat();
//ClassCastException
//Dog dd = (Dog)a;
请问：
//变成猫
a = new Cat();
a.eat();
System.out.println("--------------");
a是代表父类的？