 class Student
    {
         int stu_code;                                  //ѧ
         String stu_name;                               //ѧ
         int deptCode;                                  //Ժϵ         
         public Student( )                               //ΪյĹ췽
         {
             stu_name=" ";                             //
             stu_code=10011;                          //ѧ
             deptCode = 11;                           //ѧԺ
         }
         protected Student(String name,int sCode,int dCode)  //Ĺ췽
         {
             stu_name=name;                         //ݲ
             stu_code= sCode;                        //ݲѧ
             deptCode =dCode;                       //ݲѧԺ
         }
    }
