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。
原文链接：https://blog.csdn.net/weixin_44889894/article/details/111216161