class StudentTest {
    public static void main(String[] args) {
        Student s = new Student(300012345, "myuserid");  // use constructor to initialize

        //s.firstName = "Rudiger";  // error   
        s.setFirstName("Rudiger");  // use setter instead
        s.setPhone("6042910000");
        
        s.addCourse("CMPT 125");
        s.addCourse("MACM 101");
        s.printCourses();

    }
}