/**
 * The Student class represents a student in a student administration system.
 * It holds the student details relevant in our context.
 * 
 * @author Michael Kölling and David Barnes
 * @version 2011.07.31
 */
public class Student extends Person
{

    // the amount of credits for study taken so far
    private int credits;
    private Person person;

    /**
     * Create a new student with a given name and ID number.
     * @param fullName name of student
     * @param personID ID of student
     */
    public Student(String fullName, String personID)
    {
        super(fullName, personID);
        credits = 0;
    }

    /**
     * Add some credit points to the student's accumulated credits.
     * @param additionalPoints number of points to be given to student
     */
    public void addCredits(int additionalPoints)
    {
        credits += additionalPoints;
    }
    
    /**
     * Remove credit poinst from this student's credits.
     * @param removePoints number of points to be removed
     */
    public void removeCredits(int removePoints)
    {
        credits -= removePoints;
    }

    /**
     * Return the number of credit points this student has accumulated.
     * @return returns amount of credits student has
     */
    public int getCredits()
    {
        return credits;
    }

}