JavaOOP 实现多态案列

来源：互联网发布：淘宝靠谱的官换机店铺编辑：程序博客网时间：2024/04/27 08:49
package javaOOP;public class Cat extends Pet {    public void eat() {    System.out.println("猫猫在吃猫粮");    }    public void  playqiu(){    System.out.println("猫猫在玩球");    }}package javaOOP;public class Dog  extends Pet{   public void eat(){   System.out.println("狗狗在吃狗粮");   }   public void  feipan() {System.out.println("狗狗在玩飞盘");}}package javaOOP;public class Master {    public void eat(Pet pet)    {    pet.eat();    }    public Pet  getPet(int type){    Pet pet=null;    if (type==1) {pet=new Dog();}else if (type==2) {pet=new Penguin();}else if (type==3) {pet=new Cat();}    return pet;    }    public void  play(Pet pet) {if (pet instanceof Dog) {Dog dog=(Dog) pet;dog.feipan();}else if (pet instanceof Cat) {Cat cat =(Cat) pet;cat.playqiu();}}}package javaOOP;public class Penguin  extends Pet{   public void eat() {System.out.println("企鹅在吃东西");}}/** *  */package javaOOP;/** * @author Administrator * */public class Pet {    public void eat()    {    System.out.println("父类在吃东西");    }}package javaOOP;import java.util.Scanner;public class Test {public static void main(String[] args) {//Dog dog=new Dog();////dog.eat();//        Penguin pen=new Penguin();//       // pen.eat();//        Cat cat=new Cat();//        //        Master master=new Master();//        master.eat(dog);//        master.eat(pen);//        master.eat(cat);        ////        System.out.println("请选择要购买的宠物(1.狗狗2.企鹅3.猫)");//        Scanner input=new Scanner(System.in);//        int xz=input.nextInt();        boolean flag=false;//        Master master2=new Master();//        Pet pets;        do {         System.out.println("请选择要购买的宠物(1.狗狗2.企鹅3.猫)");             Scanner input=new Scanner(System.in);             int xz=input.nextInt();                        Master master2=new Master();             Pet pets;        switch (xz) {case 1: pets=  master2.getPet(xz); pets.eat();continue;case 2:pets=   master2.getPet(xz); pets.eat(); continue;case 3:pets=   master2.getPet(xz); pets.eat();break;}         } while (flag);}}
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