学习Java
先建立父类Pet，规定属性：昵称，健康值，亲密值，并通过构造方法输入。
吃饭方法：根据健康值的不同做不同操作，吃饭过后，健康值增加
玩耍方法：根据健康值不同做不同操作，玩耍过后，亲密值+10
package PetStore; public class Pet {String name;int health;int intimacy;public Pet(String name,int health,int intimacy){this.name=name;this.health=health;this.intimacy=intimacy;}public void Eat(){if(health<90||health==90){System.out.println("health index <= 90 , eat meat");this.health+=10;}else if(health>90&&health<100){System.out.println("health index > 90 , eat snacks");this.health+=1;}else{System.out.println("health index = 100 , the pet is full");}}public void play(){if(health<50){System.out.println("the pet is hungry!");}else{System.out.println("it loves to play with you ");this.intimacy+=10;}} }
123456789101112131415161718192021222324252627282930313233创立子类 狗狗
package PetStore;//所属包 public class Dog extends Pet {String variety;//品种public Dog(String name, int health, int intimacy,String variety) {super(name, health, intimacy);this.variety=variety;}//运用构造方法完成初始化public void Eat(){if(health<90||health==90){System.out.println("health index <= 90 , eat meat");this.health+=10;}else if(health>90&&health<100){System.out.println("health index > 90 , eat snacks");this.health+=1;}else{System.out.println("health index = 100 , the pet is full");}}//重写吃饭方法public void play(){if(health<50){System.out.println("the pet is hungry!");}else{System.out.println("it loves to play with you ");this.intimacy+=10;}}//重写吃饭方法public void Print(){System.out.println("父类属性："+"n昵称:"+super.name+"n健康值"+super.health+"n亲密值"+super.intimacy);System.out.println("自己属性："+"n种类："+this.variety);}//分别输出父类与子类属性 }
12345678910111213141516171819202122232425262728293031323334创建子类 猫cat
package PetStore; public class Cat extends Pet{String furcolor;//相对于父类，增加毛色public Cat(String name, int health, int intimacy,String furcolor) {super(name, health, intimacy);this.furcolor=furcolor;}public void Eat(){if(health<90||health==90){System.out.println("health index <= 90 , eat meat");this.health+=10;}else if(health>90&&health<100){System.out.println("health index > 90 , eat snacks");this.health+=1;}else{System.out.println("health index = 100 , the pet is full");}}public void play(){if(health<50){System.out.println("the pet is hungry!");}else{System.out.println("it loves to play with you ");this.intimacy+=10;}}public void Print(){System.out.println("父类属性："+"n昵称:"+super.name+"n健康值"+super.health+"n亲密值"+super.intimacy);System.out.println("自己属性："+"n毛色:"+this.furcolor);} }
12345678910111213141516171819202122232425262728293031323334主类
package PetStore; public class PetMain {public static void main(String args[]){Pet p = new Pet("petcw",30,90);//创建宠物对象p.Eat();//调用父类吃饭p.play();//调用父类玩耍System.out.println("----------------");Dog d = new Dog("dogtg",91,60,"jinmao");//创建狗类对象d.Eat();//调用狗类吃饭d.play();d.Print();//调用狗类输出System.out.println("----------------");Cat c = new Cat("cattom",100,77,"orange");//创建猫类对象c.Eat();c.play();c.Print();} }
123456789101112131415161718运行结果：
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