/**
* Comparator for sorting.
*
* @param fuelLogEntry
* @return -1 if this is before the provided entry, 0 if equal, and 1 if greater.
*/
public int compareTo(FuelLogEntry fuelLogEntry) {
if (this.year < fuelLogEntry.getYear()) return -1;
else if (this.year > fuelLogEntry.getYear()) return 1;
else {
if (this.month < fuelLogEntry.getMonth()) return -1;
else if (this.month > fuelLogEntry.getMonth()) return 1;
else {
if (this.day < fuelLogEntry.getDay()) return -1;
if (this.day > fuelLogEntry.getDay()) return 1;
else {
return 0;
}
}
}
}
