public int compare(TimePeriod timePeriod1, TimePeriod timePeriod2) { if (timePeriod1 == null) { return -1; } return timePeriod1.compareTo(timePeriod2); } };
public int compare(TimePeriod timePeriod1, TimePeriod timePeriod2) { if (timePeriod1 == null) { return -1; } return timePeriod1.compareTo(timePeriod2); } };