本文实例为大家分享了java多态实现电子宠物系统的具体代码，供大家参考，具体内容如下
效果实现：
代码实现：
1、主人类：
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public class Master { //领养 public Pet adopt(String name){ if ("狗狗".equals(name)){ return new Dog(); }else if (name.equals("企鹅")){ return new Penguin(); } return null; } //喂食 public void feed(Pet pet, String food){ pet.eat(food); } //玩耍 public void play(Pet pet){ if(pet instanceof Dog){ Dog d= (Dog) pet; d.catchDisk(); }else if(pet instanceof Penguin){ Penguin p= (Penguin) pet; p.swimInSouth(); } } //捐献 public Pet donate(String name){ if("狗狗".equals(name)){ return new Dog(); }else if(name.equals("企鹅")){ return new Penguin(); } return null; }} |
2、狗狗类：
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public class Dog extends Pet { public void catchDisk(){ System.out.println("狗狗接飞盘！"); } public Dog(int health) { super(health); } public Dog() { } @Override public void eat(String food) { System.out.println("狗狗吃"+food+"，吃饱后健康值+3"); setHealth(getHealth()+3); }} |
3、企鹅类：
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public class Penguin extends Pet{ public void swimInSouth(){ System.out.println("企鹅在南极游泳！"); } public Penguin(int health) { super(health); } public Penguin() { } @Override public void eat(String food) { System.out.println("企鹅宝宝吃"+food+",吃完后，健康值加5"); setHealth(getHealth()+5); }} |
4、宠物类，Pet：
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public class Pet { private int health; public int getHealth() { return health; } public void setHealth(int health) { this.health = health; if(this.health>100){ this.health=100; System.out.println("已经吃饱了，再吃就撑破了"); } } public Pet() { } public Pet(int health) { this.health = health; } public void eat(String food){ System.out.println("宠物吃"+food); }} |
5、测试类：
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public class Test { public static void main(String[] args) { Scanner sc = new Scanner(System.in); Master master = new Master(); //领养 System.out.print("请输入您要领养的宠物："); String dname = sc.next(); Pet p = master.adopt(dname); //主人给狗狗喂食，玩耍 System.out.print("请输入您要喂得食物："); String dfood = sc.next(); master.feed(p,dfood); System.out.println(p.getHealth()); master.play(p); //主人给企鹅喂食，玩耍 System.out.print("请输入您要玩的宠物："); String pname = sc.next(); p = master.adopt(pname); System.out.print("请输入您要喂的食物："); String pfood = sc.next(); master.feed(p,pfood); System.out.println(p.getHealth()); master.play(p); //捐赠出去 System.out.print("请输入您要捐赠的宠物："); String jname = sc.next(); Pet pet = master.donate(jname); System.out.println(); System.out.println("您捐献的是："+pet.getClass().getName()); }} |
补：这里测试类我是让用户在控制台输入，如果不想输入，可将测试类Test换成下面的代码：
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public class TestPet { public static void main(String[] args) { Master m = new Master(); //领养 Pet p = m.adopt("狗狗"); //主人给狗狗喂食，玩耍 m.feed(p,"大骨头"); System.out.println(p.getHealth()); m.play(p); //主人给企鹅喂食，玩耍 p = m.adopt("企鹅"); m.feed(p,"小鱼"); System.out.println(p.getHealth()); m.play(p); //捐献出去 Pet pet = m.donate("狗狗"); System.out.println("您捐献的是："+pet.getClass().getName()); }} |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/weixin_44889894/article/details/111216161
