《Monkey Java》课程6.3之protected权限

package com.sunjiajia;

public class Person{
  protected String name;
  protected int age;

  void eat(){
    System.out.println("eat");
  }
  void sleep(){
    System.out.println("sleep");
  }
}

package org.sunjiajia;

import com.sunjiajia.*;

class Student extends Person{
  void introduce(){
    System.out.println("我的名字是 " + name + "，我的年龄是 " + age);
  }
}