LocalDateTime 使い方
現在時刻の取得
LocalDateTime now = LocalDateTime.now(); System.out.println(now);
月の追加
LocalDateTime addMonths = now.plus(3, ChronoUnit.MONTHS); System.out.println(addMonths);
フォーマッター
DateTimeFormatter format = DateTimeFormatter.ofPattern("yyyy/MM/dd"); LocalDateTime now = LocalDateTime.now(); String today = now.format(format); System.out.println(today);
差分(日数)
int dayDiff = (int) ChronoUnit.DAYS.between(now, addMonths); System.out.println(dayDiff);