java 继承的使用

class Student{  String studentClass="学生";  int id;  String name;  String birthday;  public Student(int id,String name,String birthday){   this.id=id;   this.name=name;   this.birthday=birthday;  }  public void eat(){   System.out.println(name+"飞快的吃起来了！！");  } }   class xiaoxue extends Student{   String studentClass="中学生";   public xiaoxue(int id, String name, String birthday) {    super(id, name, birthday);       }   public void stu(){    System.out.println("我学习学秃了，但也变强了！！");   }   public void report(){    System.out.println(name+"是"+super.studentClass+"中的"+studentClass);   }

 }   class zhongxue extends Student{  String studentClass="中学生";  public zhongxue(int id, String name, String birthday) {   super(id, name, birthday);      }  public void stu(){   System.out.println("不苦不累，高三无味！");  }  public void report(){   System.out.println(name+"是"+super.studentClass+"中的"+studentClass);  }

}

class daxue extends Student{  String studentClass="大学生";  public daxue(int id, String name, String birthday) {   super(id, name, birthday);      }  public void stu(){   System.out.println("60分万岁，70分浪费！");  }  public void report(){   System.out.println(name+"是"+super.studentClass+"中的"+studentClass);  }

}

public class Demo1 {

 public static void main(String[] args) {  xiaoxue p1=new xiaoxue(1001,"guapi","2010.1.1");  p1.stu();  p1.report();  p1.eat();    zhongxue p2=new zhongxue(1001,"shepi","2005.1.1");  p2.stu();  p2.report();  p2.eat();    zhongxue p3=new zhongxue(1001,"guapi","2000.1.1");  p3.stu();  p3.report();  p3.eat();

 }