import hirondelle.date4j.DateTime; import hirondelle.date4j.DateTime.DayOverflow; import hirondelle.date4j.DateTime.MonthOverflow; DateTime dateTime = DateTime.now("YYYY-MM-DD hh:mm:ss"); DateTime nextDay = dateTime.plusDays(1); DateTime previousDay = dateTime.minusDays(1); DateTime nextHour = dateTime.plusHours(1); DateTime previousHour = dateTime.minusHours(1); boolean isEqual = dateTime.equals(anotherDateTime); boolean isAfter = dateTime.gt(anotherDateTime); boolean isBefore = dateTime.lt(anotherDateTime); String formattedDateTime = dateTime.format("YYYY-MM-DD hh:mm:ss"); int year = dateTime.getYear(); int month = dateTime.getMonth(); int day = dateTime.getDay(); int hour = dateTime.getHour(); int minute = dateTime.getMinute(); int second = dateTime.getSecond(); DateTime parsedDateTime = DateTime.forInstant("YYYY-MM-DD hh:mm:ss", "2022-01-01 12:00:00");