package fengda;
//定义抽象类Animal
abstract class Animal{
//定义抽象方法shout()
abstract void shout();
}
//定义Dog类继承抽象类Animal
class Dog extends Animal{
//实现抽象方法shout()
void shout() {
System.out.println("汪汪......");
}
}
class Cat extends Animal{
void shout() {
System.out.println("喵喵......");
}
}
//定义测试类
public class fengda01 {
public static void main(String[] args) {
Dog dog=new Dog();//创建Dog类的实例对象
dog.shout();//调用dog对象是的shout()方法
Cat cat=new Cat();
cat.shout();
}
}
