Java Calculate Number of Months Between two OffsetDateTime

Tags: Java OffsetDateTime ChronoUnit Java 8

In this Java core tutorial, we learn how to use the java.time.temporal.ChronoUnit class to calculate the number of months value between two OffsetDateTime objects in Java programming language.

How to get number of months between two OffsetDateTime in Java

In Java, we can use the ChronoUnit.MONTHS.between() method to calculate the number of months between two OffsetDateTime values as the following example Java code.

MonthsBetweenOffsetDateTimeExample.java

import java.time.OffsetDateTime;
import java.time.temporal.ChronoUnit;

public class MonthsBetweenOffsetDateTimeExample {
    public static void main(String... args) {
        OffsetDateTime startOffsetDateTime = OffsetDateTime.parse("2021-01-01T07:00:00.00+07:00");
        OffsetDateTime endOffsetDateTime = OffsetDateTime.parse("2022-08-13T07:00:00.00+07:00");

        // Calculate Number of Months Between two OffsetDateTime
        long numberOfMonths = ChronoUnit.MONTHS.between(startOffsetDateTime, endOffsetDateTime);

        System.out.println(String.format("Number of months between %s and %s is %d",
                startOffsetDateTime,
                endOffsetDateTime,
                numberOfMonths));
    }
}
The output as below.
Number of months between 2021-01-01T07:00+07:00 and 2022-08-13T07:00+07:00 is 19

Happy Coding 😊

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