/**
* Parses the time to verify that time is in correct time format [HH:mm:ss]
*
* @throws IllegalTimeFormatException - throws com.berlinconverter.util.IllegalTimeFormatException
* whenever the given time String object is of wrong format
* @throws java.lang.NullPointerException - throws NullPointerException in case provided time
* String object is null
*/
private Clock parse(String time) throws IllegalTimeFormatException, NullPointerException {
if (time == null) throw new NullPointerException("Time is null");
if (!time.matches(Constants.DATE_FORMAT))
throw new IllegalTimeFormatException("Wrong date format provided");
Clock clock = new Clock();
String clockParts[] = time.split(":");
int hours = Integer.parseInt(clockParts[0]);
int minutes = Integer.parseInt(clockParts[1]);
int seconds = Integer.parseInt(clockParts[2]);
if (hours > 24 || minutes > 60 || seconds > 60)
throw new IllegalTimeFormatException("Time is not in a correct format");
clock.setHours(hours);
clock.setMinutes(minutes);
clock.setSeconds(seconds);
return clock;
}
