小编use*_*454的帖子

我有2个子类:Staff,Student他们属于超类Person.

这是我老师给出的代码(任务):

public class Person
{

   private String name;
   private int yearOfBirth;

   /**
    * Create a person with given name and age.
    */
   Person(String name, int yearOfBirth)
   {
      this.name = name;
      this.yearOfBirth = yearOfBirth;
   }
}

class Student extends Person
{

   private String SID;    // student ID number

   /**
    * Create a student with no parameters.
    */

   Student()
   {
    //task.
   }
}

public class Staff extends Person
{

   private String roomNumber;

   /**
    * Construct a staff member with field values …