public class StudentTutor extends Student implements AvailableForHelp {
    
    private String discipline_;
    
    public StudentTutor(String name, int idNum, int year, String discipline) {
        super(name, idNum, year);
        discipline_ = discipline;
        System.out.println("A student tutor was created");
    }
    
    public String toString() {
        return super.toString() + ", and is a tutor in " + discipline_;
    }

    public void help() {
        System.out.println("Advice: Work as many problems as you can before the test!");
    }

    public String getTimesAvailable() {
        return "See my facebook page";
    }
}