Question

Write a Student class that stores information for a Montclair student. The class should include the following instance variables

1. • id, an integer identifier for the student
   • lastName, a string for the student's last name
   • creditsEarned, an integer representing the number of course-credits the student has earned
   • courseLoadCredits, an integer representing the current number of credits in progress.
   • status, an integer representing the status of the student (1 means freshman, 2 means sophomore, 3 means junior, 4 means senior). This status NEEDs to be updated automatically based on creditsEarned. That is, If your creditsEarned is below 30 credits, you are freshman, between 30 but below 60, you are sophomore. between 60 but below 90, you are junior. Between 90 to 120 you are senior.

Write the following methods for your Student class:

1. • A constructor (__init__) that, given an id, and a name, creates a Student with those values and no course-credits and no course load.
   • A registerCourse method that add to the current course load with an input parameter for the credit (for example, three credit will be 3). The credit load must be positive and courseLoadCredits cannot be greater than 18 credits. Show an error message indicating otherwise.
   • A withdraw method, which decreases the course load by an input parameter (for example, three credit will be 3), but never goes below 0 (need if statement).
   • A passedCourse method, which removes one courses credits (eg.3 credits) from the current course load and adds to the students overall creditsEarned.
   • A createEmail method, which returns a string. The string should be an email address of the student's name combined with their ID and remainder of @Montclair.edu. For example, a student with last name "Jackson", and ID 123 should return "[email protected]"

Create a sub class call Graduate_Student, which inherit from the Student class.

All instances variables should be the same except that the status variable be updated to 5.

Write the following methods for your sub class:

1. • A registerCourse method that add to the current course load with an input parameter for the credit (for example, three credit will be 3). The credit load must be positive and courseLoadCredits cannot be greater than 15 credits. Show an error message indicating otherwise.

Answer 1

public class Student
{
   int id;
   String lastName;
   int creditsEarned;
   int courseLoadCredits;
   int status;
   public Student(int idd, String name)
   {
       id=idd;
       lastName=name;
   }
   public void registerCourse(int courseLoad)
   {
       if(courseLoad>0 && (courseLoadCredits+courseLoad<19))
       {
           courseLoadCredits+=courseLoad;
       }
       else
       {
           System.out.print("courseLoadCredits cannot be greaterthan 18")
       }
   }
   public void withdraw(int courseLoad)
   {
       if(courseLoadCredits-courseLoad>0)
       {
           courseLoadCredits-=courseLoad;
       }
   }
   public void passedCourse(int val)
   {
       courseLoadCredits-=val;
       creditsEarned+=val;
   }
   public String createEmail()
   {
       String email;
       email=lastName+Integer.toString(id)+"@Montclair.edu";
       return email;
   }
}
public class Graduate_Student extends Student
{
   public void registerCourse(int credit)
   {
       if(credit>0 && courseLoadCredits+credit<16)
           {
               courseLoadCredits+=credit;
           }
           else
           {
               System.out.print("Credit cannot be greaterthan 15")
           }
   }
}