1-21作业1

1

 1 package kslx.zuoye;
 2 
 3 import java.util.Scanner;
 4 
 5 public class Test {
 6     public static void main(String[] args){
 7         Scanner sc=new Scanner(System.in);
 8         Zhuren zr=new Zhuren();
 9         Pet dog=new Dog();
10         dog.setName("小狗");
11         dog.setHealth(60);
12         System.out.println("当前健康值为:"+dog.getHealth());
13         zr.chifan(dog);
14         System.out.println("当前健康值为:"+dog.getHealth());
15         System.out.println("--------------");
16         Pet pen=new Pen();
17         pen.setName("Q仔");
18         pen.setHealth(55);
19         System.out.println("当前健康值为:"+pen.getHealth());
20         zr.chifan(pen);
21         System.out.println("当前健康值为:"+pen.getHealth());
22 
23     }
24 }

2

 1 package kslx.zuoye;
 2 
 3 public class Zhuren {
 4     public void chifan(Pet pet){
 5         if(pet.getHealth()<100){
 6             pet.weishi();
 7         }else{
 8             System.out.println("健康已满,无需喂食");
 9         }
10     }
11 }

3

 1 package kslx.zuoye;
 2 
 3 public abstract class Pet {
 4     private String name;
 5 
 6     public int getHealth() {
 7         return health;
 8     }
 9 
10     public void setHealth(int health) {
11         this.health = health;
12     }
13 
14     private int health;
15     public String getName() {
16         return name;
17     }
18 
19     public void setName(String name) {
20         this.name = name;
21     }
22 
23     public abstract void weishi();
24 }

4

1 package kslx.zuoye;
2 
3 public class Pen extends Pet {
4     @Override
5     public void weishi() {
6         System.out.println("吃条小鱼");
7         setHealth(getHealth()+5);
8     }
9 }

5

1 package kslx.zuoye;
2 
3 public class Dog extends Pet{
4     @Override
5     public void weishi() {
6         System.out.println("吃根骨头...");
7         setHealth(getHealth()+3);
8     }
9 }

6