63 lines
1.0 KiB
Java
63 lines
1.0 KiB
Java
package exp4;
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abstract class Animal{
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String name;
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int age;
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public Animal(){};
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public Animal(String name, int age){
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this.name = name;
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this.age = age;
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}
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abstract void eat();
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abstract void show();
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}
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class Cat extends Animal{
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public Cat(){};
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public Cat(String name, int age){
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super(name, age);
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}
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void eat(){
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System.out.println("猫吃鱼");
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}
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void show(){
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System.out.println(this.name+","+this.age);
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}
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}
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class Dog extends Animal{
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public Dog(){};
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public Dog(String name, int age){
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super(name, age);
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}
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void eat(){
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System.out.println("狗吃肉");
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}
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void show(){
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System.out.println(this.name+","+this.age);
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}
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}
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public class AnimalTool {
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public static void main(String[] args){
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Animal a = new Cat();
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Animal b = new Dog("旺财", 3);
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a.name = "Tom";
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a.age = 999;
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a.show();
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b.show();
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a.eat();
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b.eat();
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}
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}
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