Showing Morning, afternoon, evening, night message based on Time in java

Question

What i am trying to do::

Show message based on

• Good morning (12am-12pm)
• Good after noon (12pm -4pm)
• Good evening

Answer 1

If somebody looking the same for Dart and Flutter: the code without if statements - easy to read and edit.

main() {
  int hourValue = DateTime.now().hour;
  print(checkDayPeriod(hourValue));
}

String checkDayPeriod(int hour) {
  int _res = 21;
  Map dayPeriods = {
    0: 'Good night',
    12: 'Good morning',
    16: 'Good afternoon',
    21: 'Good evening',
  };

  dayPeriods.forEach(
    (key, value) {
      if (hour < key && key <= _res) _res = key;
    },
  );

  return dayPeriods[_res];
}