Java tutorial
import java.time.Duration; import java.time.LocalDate; import java.time.temporal.ChronoUnit; public class Main { public static void main(String[] args) { Duration duration = Duration.ofDays(33); //seconds or nanos Duration duration1 = Duration.ofHours(33); //seconds or nanos Duration duration2 = Duration.ofMillis(33); //seconds or nanos Duration duration3 = Duration.ofMinutes(33); //seconds or nanos Duration duration4 = Duration.ofNanos(33); //seconds or nanos Duration duration5 = Duration.ofSeconds(33); //seconds or nanos Duration duration6 = Duration.between(LocalDate.of(2012, 11, 11), LocalDate.of(2013, 1, 1)); System.out.println(duration6.getSeconds()); System.out.println(duration.getNano()); System.out.println(duration.getSeconds()); } }