[자바] java LocalDateTime 경과 시간 가져오기

import java.time.LocalDateTime; import java.time.Month; import java.time.temporal.ChronoUnit; LocalDateTime startDateTime = LocalDateTime.of(2021, Month.OCTOBER, 1, 0, 0, 0, 0); LocalDateTime nowDateTime = LocalDateTime.of(2031, Month.OCTOBER, 1, 0, 0, 0, 0); long time = ChronoUnit.MINUTES.between(startDateTime, nowDateTime); log.debug("{}", time); // 5258880 7자리 숫자 LocalDateTime startDateTime = LocalDateTime.of(2021, Month.JANUARY, 1, 0, 0, 0, 0); LocalDateTime nowDateTime = LocalDateTime.of(20...