public Attendance getAttendanceByMember(Member member) {
Attendance returnAttendance = null;
for (Attendance attendance : getAttendances()) {
if (attendance.getMember().equals(member)) {
returnAttendance = attendance;
}
}
return returnAttendance;
}
public int compare(Attendance a1, Attendance a2) {
return a1.getMember().getName().compareTo(a2.getMember().getName());
}