/**
* The method checks the object to <code>null</code> completeness of all positions are empty
* positions are not allowed
*
* @param flight - Flight object being checked
* @return - false, if everything checks out correctly; true - if the data is invalid
*/
private static boolean checkEmpty(Flight flight) {
return flight == null
|| flight.getDate() == null
|| flight.getFrom() == null
|| flight.getTo() == null
|| flight.getPlane() == null;
}
/**
* The method checks the date of departure, it would not be the in the past
*
* @param flight - Flight object being checked
* @return - false, if everything checks out correctly; true - if the data is invalid
*/
private boolean checkDate(Flight flight) {
Date yesterdayDate = new Date(System.currentTimeMillis() - 1000L * 60L * 60L * 24L);
Date flightDate = flight.getDate();
return yesterdayDate.after(flightDate);
}