Calculate time difference

This example will show how to find the difference between two dates using java 8 date time api and joda time. It will show the differences in days, hours, minutes, and seconds between two dates.

Java 8 Date and Time API

Period.between

@Test
public void difference_between_two_dates_java8_period() {

    LocalDate sinceGraduation = LocalDate.of(1984, Month.JUNE, 4);
    LocalDate currentDate = LocalDate.now();

    Period betweenDates = Period.between(sinceGraduation, currentDate);

    int diffInDays = betweenDates.getDays();
    int diffInMonths = betweenDates.getMonths();
    int diffInYears = betweenDates.getYears();

    logger.info(diffInDays);
    logger.info(diffInMonths);
    logger.info(diffInYears);

    assertTrue(diffInDays >= anyInt());
    assertTrue(diffInMonths >= anyInt());
    assertTrue(diffInYears >= anyInt());
}

Output

29
7
29

ChronoUnit Period

@Test
public void difference_between_two_dates_java8_chrono_period() {

    LocalDate sinceGraduation = LocalDate.of(1984, Month.JUNE, 4);
    LocalDate currentDate = LocalDate.now();

    long diffInDays = ChronoUnit.DAYS.between(sinceGraduation, currentDate);
    long diffInMonths = ChronoUnit.MONTHS.between(sinceGraduation,
            currentDate);
    long diffInYears = ChronoUnit.YEARS.between(sinceGraduation,
            currentDate);

    logger.info(diffInDays);
    logger.info(diffInMonths);
    logger.info(diffInYears);

    assertTrue(diffInDays >= anyLong());
    assertTrue(diffInMonths >= anyLong());
    assertTrue(diffInYears >= anyLong());
}

Output

10835
355
29

Duration.between

@Test
public void difference_between_two_dates_java8_duration() {

    LocalDateTime dateTime = LocalDateTime.of(1984, 6, 4, 0, 0);
    LocalDateTime dateTime2 = LocalDateTime.now();

    int diffInNano = java.time.Duration.between(dateTime, dateTime2)
            .getNano();
    long diffInSeconds = java.time.Duration.between(dateTime, dateTime2)
            .getSeconds();

    long diffInMilli = java.time.Duration.between(dateTime, dateTime2)
            .toMillis();
    long diffInMinutes = java.time.Duration.between(dateTime, dateTime2)
            .toMinutes();
    long diffInHours = java.time.Duration.between(dateTime, dateTime2)
            .toHours();

    logger.info(diffInNano);
    logger.info(diffInSeconds);
    logger.info(diffInMilli);
    logger.info(diffInMinutes);
    logger.info(diffInHours);

    assertTrue(diffInNano >= anyLong());
    assertTrue(diffInSeconds >= anyLong());
    assertTrue(diffInMilli >= anyLong());
    assertTrue(diffInMinutes >= anyLong());
    assertTrue(diffInHours >= anyLong());
}

Output

247000000
936217327
936217327247
15603622
260060

ChronoUnit Duration

@Test
public void difference_between_two_dates_java8_chrono_duration() {

    LocalDateTime dateTime = LocalDateTime.of(1984, 6, 4, 0, 0);
    LocalDateTime dateTime2 = LocalDateTime.now();

    long diffInNano = ChronoUnit.NANOS.between(dateTime, dateTime2);
    long diffInSeconds = ChronoUnit.SECONDS.between(dateTime, dateTime2);

    long diffInMilli = ChronoUnit.MILLIS.between(dateTime, dateTime2);
    long diffInMinutes = ChronoUnit.MINUTES.between(dateTime, dateTime2);
    long diffInHours = ChronoUnit.HOURS.between(dateTime, dateTime2);

    logger.info(diffInNano);
    logger.info(diffInSeconds);
    logger.info(diffInMilli);
    logger.info(diffInMinutes);
    logger.info(diffInHours);

    assertTrue(diffInNano >= anyLong());
    assertTrue(diffInSeconds >= anyLong());
    assertTrue(diffInMilli >= anyLong());
    assertTrue(diffInMinutes >= anyLong());
    assertTrue(diffInHours >= anyLong());

}

Output

936217260296000000
936217260
936217260296
15603621
260060

Joda Time

Between

@Test
public void difference_between_two_dates_joda () {

    DateTime sinceGraduation = new DateTime(1984, 6, 4, 0, 0, GregorianChronology.getInstance());
    DateTime currentDate = new DateTime(); //current date

    Days diffInDays = Days.daysBetween(sinceGraduation, currentDate);
    Hours diffInHours = Hours.hoursBetween(sinceGraduation, currentDate);
    Minutes diffInMinutes = Minutes.minutesBetween(sinceGraduation, currentDate);
    Seconds seconds = Seconds.secondsBetween(sinceGraduation, currentDate);

    logger.info(diffInDays.getDays());
    logger.info(diffInHours.getHours());
    logger.info(diffInMinutes.getMinutes());
    logger.info(seconds.getSeconds());

    assertTrue(diffInDays.getDays() >= 10697);
    assertTrue(diffInHours.getHours() >= 256747);
    assertTrue(diffInMinutes.getMinutes() >= 15404876);
    assertTrue(seconds.getSeconds() >= 924292577);

}

Output

Duration

@Test
public void difference_between_two_dates_joda_duration () {

    DateTime sinceGraduation = new DateTime(1984, 6, 4, 0, 0, GregorianChronology.getInstance());
    DateTime currentDate = new DateTime(); //current date

    Duration duration = new Duration(sinceGraduation, currentDate);

    logger.info(duration.getStandardDays());
    logger.info(duration.getStandardHours());
    logger.info(duration.getStandardMinutes());
    logger.info(duration.getStandardSeconds());

    assertTrue(duration.getStandardDays() >= 10697);
    assertTrue(duration.getStandardHours() >= 256747);
    assertTrue(duration.getStandardMinutes() >= 15404876);
    assertTrue(duration.getStandardSeconds() >= 924292577);
}

Output