Java多态实例主人和狗狗企鹅玩游戏

小灰灰 2022-05-13 00:56 225阅读 0赞

# Java多态实例主人和狗狗企鹅玩游戏 #

**需求说明：**  
主人和狗狗玩接飞盘游戏，狗狗健康值减少10，与主人亲密度增加5  
主人和企鹅玩游泳游戏，企鹅健康值减少10，与主人亲密度增加5  
**提示：**  
Dog类添加catchingFlyDisc()方法，实现接飞盘功能  
Penguin类添加swimming()方法，实现游泳功能  
主人添加play(Pet pet)方法  
如果pet代表Dog就玩接飞盘游戏  
如果pet代表Penguin就玩游泳游戏

**Pet类**

public class Pet {
        
        private String name;
        protected int health=100;//健康值
        protected int love = 0;//亲密度
    
        public Pet() {
            super();
        }
    
        public Pet(String name, int health, int love) {
            super();
            this.name = name;
            this.health = health;
            this.love = love;
    
        }
    
    //第二种写法：
    
    /*
    public abstract void play();
    */
    
    
    
    
    
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public int getHealth() {
            return health;
        }
        public void setHealth(int health) {
            this.health = health;
        }
        public int getLove() {
            return love;
        }
        public void setLove(int love) {
            this.love = love;
        }
    }

**Dog类：**  
主人和狗狗玩接飞盘游戏，狗狗健康值减少10，与主人亲密度增加5  
Dog类添加catchingFlyDisc()方法，实现接飞盘功能

public class Dog extends Pet {
        
        private String strain;//品种
    
    
        public Dog() {
            super();
        }
    
    
    
        public Dog(String strain) {
            super();
            this.strain = strain;
    
        }
    
    //第二种写法
    
    /*
        @Override
        public void play() {
            // TODO Auto-generated method stub
            catchingFlyDisc(); //调用正在接飞盘的类
        }
    */
    
    
        public void catchingFlyDisc(){
            System.out.println("小狗正在接飞盘！");
            super.health =super.health-10; 
            System.out.println("健康值：" + super.health);
            super.love = super.love +5;
            System.out.println("亲密度：" + super.love);
        }
    
        public String getStrain() {
            return strain;
        }
    
        public void setStrain(String strain) {
            this.strain = strain;
        }
    }

**Penguin类：**  
主人和企鹅玩游泳游戏，企鹅健康值减少10，与主人亲密度增加5 Penguin类添加swimming()方法，实现游泳功能

public class Penguin extends Pet {
        
        private String sex;
    
    
        public Penguin() {
            super();
        }
        public Penguin(String sex) {
            super();
            this.sex = sex;
    
        }
    
    //第二种写法
    
    /*
    @Override
        public void play() {
            // TODO Auto-generated method stub
            swimming();//调用正在游泳的类
        }
    */
    
        public void swimming(){
            System.out.println("企鹅正在接飞盘！");
            super.health =super.health-10; 
            System.out.println("健康值：" + super.health);
            super.love = super.love +5;
            System.out.println("亲密度：" + super.love);
        }
    
        public String getSex() {
            return sex;
        }
    
    
        public void setSex(String sex) {
            this.sex = sex;
        }
    }

**Master类：**

public class Master {
        
        private String name;
        private int age;
        public Master() {
            super();
        }
        public Master(String name, int age) {
            super();
            this.name = name;
            this.age = age;
        }
        public void play(Pet pet){
             if(pet instanceof Dog){
                    Dog dog = (Dog)pet;
                    dog.catchingFlyDisc();
                }else if(pet instanceof Penguin){
                    Penguin p = (Penguin)pet;
                    p.swimming();
                }
    
        }
    
    //第二种写法
    
    /*
    public void play(Pet pet) {
            pet.play();
        }
    */
    
    
    
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public int getAge() {
            return age;
        }
        public void setAge(int age) {
            this.age = age;
        }
    }

**测试类Test：**

public class Test {
    
        public static void main(String[] args) {
            // TODO Auto-generated method stub
            Master m = new Master();
    
            m.play(new Dog());
            m.play(new Penguin());
        }
    }