Like all OsidLists, ActivityRegistrationList provides a means for accessing ActivityRegistration elements sequentially either one at a time or many at a time. Examples:

while (arl.hasNext()) {
     ActivityRegistration registration = arl.getNextActivityRegistration();
}
                

while (arl.hasNext()) {
     ActivityRegistration[] registrations = arl.getNextActivityRegistrations(arl.available());
}