有关访问权限的小问题

package text;
import text.接口总归处.Pet;
class Cat extends Animal implements Pet{
    private String name;
    public Cat(String name)
    {
        super(4);
        this.name = name;
    }
    public Cat(){
        this("");
        legs = 4;
    }

    @Override
    public String getName() {
        return name;
    }

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

    @Override
    public void play() {
        System.out.println("你的宠物正在和你玩");
    }

    @Override
    void eat() {
        System.out.println("你的宠物，正在吃东西");
    }
}
class start{
    public static void main(String[] args) {
        Cat dog = new Cat();
        dog.setName("dog");
        dog.play();
        System.out.println(dog.getName());
        dog.eat();
        dog.setName("asd");
        System.out.println(dog.getName());
        System.out.println(dog.legs);        //问题就出在这：他能成功编译，所以说能访问我设定的protected的内容
    }
}

这是接口与父类
接口：

package text.接口总归处;

public interface Pet{
    String getName();
    void setName(String name);
    void play();
}

父类：

package text;

public class Animal类 {
}
abstract class Animal{
    protected int legs;
    public Animal(int l){
        legs = l;
    }
    abstract void eat();
    public  void walk(){
        System.out.println("Use how mang legs to walk?" );
        System.out.println( this.legs);
    }
}

求解答！

咋地了,你看一下protected 的访问范围, 首先你的Cat extends Animal implements Pet, protected的访问范围是 同包 下,以及子类,

如果你换成private修饰, 子类就不能访问了;

欢迎采纳!!