2-14_猫和狗(接口版)

1 package InterfaceCat;
2 
3 public interface Jumpping {
4     public abstract void jump();
5 }
 1 package InterfaceCat;
 2 
 3 public abstract class Animal {
 4     private String name;
 5     private int age;
 6 
 7     public Animal() {
 8     }
 9 
10     public Animal(String name, int age) {
11         this.name = name;
12         this.age = age;
13     }
14 
15     public String getName() {
16         return name;
17     }
18 
19     public void setName(String name) {
20         this.name = name;
21     }
22 
23     public int getAge() {
24         return age;
25     }
26 
27     public void setAge(int age) {
28         this.age = age;
29     }
30 
31     public abstract void eat();
32 
33 }
 1 package InterfaceCat;
 2 
 3 public class Cat extends Animal implements Jumpping{
 4     public Cat() {
 5     }
 6 
 7     public Cat(String name, int age) {
 8         super(name, age);
 9     }
10 
11     @Override
12     public void eat() {
13         System.out.println("猫吃鱼");
14     }
15 
16     @Override
17     public void jump() {
18         System.out.println("猫可以跳高了");
19     }
20 }
 1 package InterfaceCat;
 2 /*
 3     案例:猫和狗
 4 
 5     需求:对猫进行训练,猫可以调高,加入跳高功能。请采用抽象类和接口来实现猫的案例,并在测试类中进行测试
 6 
 7     思路:
 8         1.定义接口(Jumpping)
 9             成员方法:跳高();
10         2.定义抽象动物类(Animal)
11             成员变量:姓名,年龄;
12             构造方法:无参,带参;
13             成员方法:get/set方法,吃饭();
14         3.定义具体猫类(Cat),继承动物类,实现跳高接口
15             构造方法:无参,带参;
16             成员方法:重写吃饭(){...},重写跳高方法(){...}
17         4.定义测试类(AnimalDemo),写代码测试
18 * */
19 public class AnimalDemo {
20     public static void main(String[] args) {
21         //创建对象,调用方法
22         Jumpping j = new Cat();
23         j.jump();
24         System.out.println("--------");
25 
26         Animal a = new Cat();
27         a.setName("加菲猫");
28         a.setAge(6);
29         System.out.println(a.getName()+","+a.getAge());
30         a.eat();
31 
32         a = new Cat("加菲猫二号",3);
33         System.out.println(a.getName()+","+a.getAge());
34         a.eat();
35         System.out.println("-------");
36 
37         Cat c = new Cat();
38         c.setName("加菲猫三号");
39         c.setAge(1);
40         System.out.println(c.getName() +","+c.getAge());
41         c.eat();
42         c.jump();
43 
44     }
45 }

 

posted @ 2021-02-22 20:06  找不到北的北  阅读(115)  评论(0)    收藏  举报