java类和对象案例实现

/**
 * 小狗把小花的骨头抢走了，小花wangwangwang
 */
//定义接口 供外部 实现
interface Runss {
    void shiwu();

    void say();
}

// 动物类 定义 抽象类  ,,抽象方法子类实现  实现接口Runs 方法
abstract class dongwus implements Runss {
    protected String shiwu;
    protected String name;

    dongwus() {
    }

    public dongwus(String shiwu, String name) {
        this.shiwu = shiwu;
        this.name = name;
    }

    //    重载实现接口方法
    @Override
    public void shiwu() {
        System.out.print(name + " ");
    }

    //    抽象方法，由子类 具体来实现  多态体现.. 由子类 狗 猫 来 实现
    @Override
    public abstract void say();
}

// 狗
class Dogs extends dongwus {
    public Dogs(String shiwu, String name) {
        super(shiwu, name);      // 调用父类方法,,实现修改 父类属性
    }

    //    实现父类方法
    @Override
    public void say() {
        System.out.println("🐕汪汪汪~~~~    " + name + "正在啃🍗" + shiwu);
    }
}

//猫
class Cats extends dongwus {
    public Cats(String shiwu, String name) {
        super(shiwu, name);      // 调用父类方法,,实现修改 父类属性
    }


    //    实现父类方法
    @Override
    public void say() {
        System.out.println("🐱喵喵喵~~~~    " + name + "正在吃🐟" + shiwu);
    }
}

//饲养员
class Siyangyuans {
    private String name;

    Siyangyuans() {
    }

    ;

    Siyangyuans(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void prints() {
        System.out.println("hello, 我是饲养员👨‍🏭" + name);
    }

}

System.out.println("=============   欢迎来到圆通山动物园   ============");
                Siyangyuan siyangyuan = new Siyangyuan("小华");
                siyangyuan.prints();
                Runss dogs = new Dogs("骨头", "小狗");
                Runss cats = new Cats("鱼", "小猫");
                dogs.shiwu();
                dogs.say();
                cats.shiwu();
                cats.say();