对super的运用

package 继承运用;
class Student{
 String studentclass="学生";
 int id;
 String name;
 String boredTime;
 public Student(int id, String name, String boredTime) {
  this.id=id;
  this.name=name;
  this.boredTime = boredTime;
 }
 public void study() {
  System.out.println("好好学习，天天向上！");
 }
 public void eat() {
  System.out.println("多喝牛奶！长高高哦");
 }
}
class smallStudent extends Student
{   String smallStudent="小学生";
 public  smallStudent(int id,String name,String boredTime) {
  super(id,name,boredTime);
 }
 public void reprot() {
  System.out.println("我是"+studentclass+"中的"+smallStudent);
 }
}
class bigStudent extends Student
{
   String bigStudent = "大学生";
   public bigStudent(int id , String name,String boredTime) {
    super(id,name,boredTime);
   }
   public void reprot() {
    System.out.println("我是"+studentclass+"中的"+bigStudent);
   }
}
public class Dome3 {
 public static void main(String []args) {
 Student s1=new Student(10086,"狗蛋","2010年3月2日");
 System.out.println("学号"+s1.id);
 System.out.println("姓名"+s1.name);
 System.out.println("出生时间"+s1.boredTime);
 s1.study();
 s1.eat();
 smallStudent s2 = new smallStudent(10010,"蠢蛋","2005年3月2日");
 s2.reprot();
 System.out.println("学号"+s2.id);
 System.out.println("姓名"+s2.name);
 System.out.println("出生时间"+s2.boredTime);
 s2.study();
 s2.eat();
 bigStudent s3 =new bigStudent(110,"狗屎","2000年3月2日");
 s3.reprot();
 System.out.println("学号"+s3.id);
 System.out.println("姓名"+s3.name);
 System.out.println("出生时间"+s3.boredTime);
 s3.study();
 s3.eat();
 
}
}