package com.imooc;public class Animal { public int age = 10; public String name; public void eat(){ System.out.println("年龄:"+age+"动物具有吃东西的能力!"); } public Animal(){ System.out.println("Animal类执行了"); age = 20; }}package com.imooc;public class Dog extends Animal { public void eat(){ System.out.println("年龄:"+age+"狗具有吃东西的能力!"); } public Dog(){ System.out.println("Dog类执行了"); }}package com.imooc;public class Initail { public static void main(String[] args) { // TODO Auto-generated method stub Animal animal = new Animal(); System.out.println("animal age:"+animal.age); Dog dog = new Dog(); dog.age = 10; dog.name = "xiaohua"; dog.eat(); }
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