1 package cn.xlf.oop.abstractClass;
2
3 public abstract class Animal {
4 public abstract void run();//抽象方法只能在抽象中
5 public void breath(){//抽象类中可以定义普通方法
6 System.out.println("呼吸");
7 }
8
9 }
10 class Cat extends Animal{
11 public void run(){
12 System.out.println("Catfoot");
13 }
14 }
15 class Dog extends Animal{
16
17 public void run(){
18 System.out.println("Dogfoot");
19 }
20 }
1 package cn.xlf.oop.abstractClass;
2
3 public class Test {
4 public static void mian(String[] args){
5 Animal a = new Cat();
6 7 }
8
9 }
