private Meeting getMeetingFromID(int id) {
        Iterator meetingIterator = allMeetings.iterator();
        Meeting nextMeeting;
        while(meetingIterator.hasNext()) {
            nextMeeting = (Meeting) meetingIterator.next();
            if(nextMeeting.getId() == id) {
                return nextMeeting;
            }
        }
        return null;
    }