[java] LocalDateTime

 

LocalDateTime.now(); // 2020-02-23T22:42:18.347

 

2020 2 23 22 45 37 340000000

LocalDateTime.now().get(ChronoField.YEAR);
LocalDateTime.now().get(ChronoField.MONTH_OF_YEAR);
LocalDateTime.now().get(ChronoField.DAY_OF_MONTH);
LocalDateTime.now().get(ChronoField.HOUR_OF_DAY);
LocalDateTime.now().get(ChronoField.MINUTE_OF_HOUR);
LocalDateTime.now().get(ChronoField.SECOND_OF_MINUTE);
LocalDateTime.now().get(ChronoField.NANO_OF_SECOND);