/**
* Returns {@code DayOfWeek} for given number.
*
* @param dayOfWeek the day of week as a number
* @return the {@code DayOfWeek}
* @throws IllegalArgumentException if given number isn't between 1 and 7
*/
public static DayOfWeek getDayOfWeek(int dayOfWeek) {
for (DayOfWeek day : DayOfWeek.values()) {
if (day.getValue() == dayOfWeek) {
return day;
}
}
throw new IllegalArgumentException("Not a valid day");
}
