Java 8 – Difference between two LocalDate or LocalDateTime

In Java 8, we can use Period, Duration or ChronoUnit to calculate the difference between two LocalDate or LocaldateTime.

1. Period to calculate the difference between two LocalDate.
2. Duration to calculate the difference between two LocalDateTime.
3. ChronoUnit for everything.

1. Period

package com.mkyong.java8;

import java.time.LocalDate;
import java.time.Period;

public class JavaLocalDate {

    public static void main(String[] args) {

        LocalDate from = LocalDate.of(2020, 5, 4);
        LocalDate to = LocalDate.of(2020, 10, 10);

        Period period = Period.between(from, to);

        System.out.print(period.getYears() + " years,");
        System.out.print(period.getMonths() + " months,");
        System.out.print(period.getDays() + " days");

    }

}

Output

0 years,5 months,6 days

2. Duration

package com.mkyong.java8;

import java.time.Duration;
import java.time.LocalDateTime;

public class JavaLocalDateTime {

    public static void main(String[] args) {

        LocalDateTime from = LocalDateTime.of(2020, 10, 4,
                10, 20, 55);
        LocalDateTime to = LocalDateTime.of(2020, 10, 10,
                10, 21, 1);

        Duration duration = Duration.between(from, to);

        // days between from and to
        System.out.println(duration.toDays() + " days");

        // hours between from and to
        System.out.println(duration.toHours() + " hours");

        // minutes between from and to
        System.out.println(duration.toMinutes() + " minutes");

        // seconds between from and to
        System.out.println(duration.toSeconds() + " seconds");
        System.out.println(duration.getSeconds() + " seconds");

    }

}

Output

6 days
144 hours
8640 minutes
518406 seconds
518406 seconds

3. ChronoUnit

package com.mkyong.java8;

import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;

public class JavaChronoUnit {

    public static void main(String[] args) {

        LocalDateTime from = LocalDateTime.of(2020, 10, 4,
                10, 20, 55);
        LocalDateTime to = LocalDateTime.of(2020, 11, 10,
                10, 21, 1);

        long years = ChronoUnit.YEARS.between(from, to);
        long months = ChronoUnit.MONTHS.between(from, to);
        long weeks = ChronoUnit.WEEKS.between(from, to);
        long days = ChronoUnit.DAYS.between(from, to);
        long hours = ChronoUnit.HOURS.between(from, to);
        long minutes = ChronoUnit.MINUTES.between(from, to);
        long seconds = ChronoUnit.SECONDS.between(from, to);
        long milliseconds = ChronoUnit.MILLIS.between(from, to);
        long nano = ChronoUnit.NANOS.between(from, to);

        System.out.println(years + " years");
        System.out.println(months + " months");
        System.out.println(weeks + " weeks");
        System.out.println(days + " days");
        System.out.println(hours + " hours");
        System.out.println(minutes + " minutes");
        System.out.println(seconds + " seconds");
        System.out.println(milliseconds + " milliseconds");
        System.out.println(nano + " nano");

    }

}

Output

0 years
1 months
5 weeks
37 days
888 hours
53280 minutes
3196806 seconds
3196806000 milliseconds
3196806000000000 nano

References

• Java 8 – Period and Duration examples
• How to compare dates in Java