抽象类和接口的小案例

Posted 2020-11-20

class Test1_Animal {
    public static void main(String[] args) {
        Cat c = new Cat("加菲",8);
        c.eat();
        c.sleep();

        JumpCat jc = new JumpCat("跳高猫",3);
        jc.eat();
        jc.sleep();
        jc.jump();
    }
}

/*
* A:案例演示
    * 动物类：姓名，年龄，吃饭，睡觉。
    * 猫和狗
    * 动物培训接口：跳高
*/

abstract class Animal {
    private String name;                //姓名
    private int age;                    //年龄

    public Animal() {}                  //空参构造

    public Animal(String name,int age) {//有参构造
        this.name = name;
        this.age = age;
    }

    public void setName(String name) {  //设置姓名
        this.name = name;
    }

    public String getName() {           //获取姓名
        return name;
    }

    public void setAge(int age) {       //设置年龄
        this.age = age;
    }

    public int getAge() {               //获取年龄
        return age;
    }

    public abstract void eat();         //吃饭

    public abstract void sleep();       //睡觉
}

interface Jumping {                     //跳高的接口
    public void jump();
}

class Cat extends Animal {
    public Cat() {}                 //空参构造

    public Cat(String name,int age) {//有参构造
        super(name,age);
    }

    public void eat() {
        System.out.println("猫吃鱼");
    }

    public void sleep() {
        System.out.println("侧着睡");
    }
}

class JumpCat extends Cat implements Jumping {
    public JumpCat() {}                 //空参构造

    public JumpCat(String name,int age) {//有参构造
        super(name,age);
    }

    public void jump() {
        System.out.println("猫跳高");
    }
}