多态哇

这么简单都不好意思回答了

package com.mvc.tool;
/**
* Created by lw on 14-3-17.
*/
public class Animal {
public static void main(String[] args) {
//想要什么，接口用哪个实现
AnimalInterface cat =new AnimalForCat();
cat.Jiao();
AnimalInterface dog =new AnimalForDog();
dog.Jiao();
}
}
// 动物是个狗
class AnimalForDog implements AnimalInterface {
@Override
public String Jiao() {
return "I am dog !";
}
}
// 动物是个猫
class AnimalForCat implements AnimalInterface {
@Override
public String Jiao() {
return "I am cat !";
}
}
//定义动物接口，有一个叫的方法
interface AnimalInterface{
public String Jiao();
}

package com.mvc.tool;
/**
* Created by lw on 14-3-17. 拿去
*/
public class Animal {
public static void main(String[] args) {
//想要什么，接口用哪个实现
AnimalInterface cat =new AnimalForCat();
cat.Jiao();
AnimalInterface dog =new AnimalForDog();
dog.Jiao();
}
}
// 动物是个狗
class AnimalForDog implements AnimalInterface {
@Override
public String Jiao() {
return "I am dog !";
}
}
// 动物是个猫
class AnimalForCat implements AnimalInterface {
@Override
public String Jiao() {
return "I am cat !";
}
}
//定义动物接口，有一个叫的方法
interface AnimalInterface{
public String Jiao();
}

貌似木有安妮需求写。大体就这个意思。

public class AnimalMain{
public static void main(String[] args){
Animal dog = new Dog();
dog.MyName();
dog.Hue();
Animal cat = new Cat();
cat.MyName();
cat.Hue();
}
}


abstract class Animal{
public abstract void MyName();
public abstract void Hue();
}


class Cat extends Animal{

public void MyName(){
System.out.print("这是一只猫：");
}
public void Hue(){
System.out.println("喵喵");
}
}


class Dog extends Animal{
public void MyName(){
System.out.print("这是一只狗：");
}
public void Hue(){
System.out.println("汪汪");
}
}

谢谢大家的答案。