public class Student extends Person {
    final int studId;
    final String university;
    
    public Student(int id, int birthday, int birthmonth, int birthyear, String name, 
                    int studId, String university) {
        super(id, birthday, birthmonth, birthyear, name);
        this.studId = studId;
        this.university = university;
    }

    String getStudentInfo() {
        return super.getName() + "\nStudent-ID: " + this.studId + "\nUniversitet: " + this.university;
    }
}