OffsetDateTime plusMonths() method in Java with examples

The plusMonths() method of OffsetDateTime class in Java returns a copy of this OffsetDateTime with the specified number of months added to the parsed date and time.

Syntax:

public OffsetDateTime plusMonths(long months)

Parameter: This method accepts a single parameter months which specifies the months to be added to the parsed date. It can be negative also, in that case, it subtracts the number of months to it.

Return Value: It returns an OffsetDateTime based on this date-time with the months added and not null.

Exceptions: The program throws a DateTimeException when it exceeds the supported data and time range.

Below programs illustrate the plusMonths() method:

Program 1:

// Java program to demonstrate the plusMonths() method

import java.time.OffsetDateTime;
import java.time.ZonedDateTime;

public class GFG {
    public static void main(String[] args)
    {

        // Parses the date1
        OffsetDateTime date1
            = OffsetDateTime
                  .parse(
                      "2018-12-12T13:30:30+05:00");

        // Prints dates
        System.out.println("Date1: " + date1);

        // Subtracts the number of months
        System.out.println("Date1 after adding months: "
                           + date1.plusMonths(-120));
    }
}

Output:

Date1: 2018-12-12T13:30:30+05:00
Date1 after adding months: 2008-12-12T13:30:30+05:00

Program 2 :

// Java program to demonstrate the plusMonths() method

import java.time.OffsetDateTime;
import java.time.ZonedDateTime;

public class GFG {
    public static void main(String[] args)
    {

        // Parses the date1
        OffsetDateTime date1
            = OffsetDateTime
                  .parse(
                      "2018-12-12T13:30:30+05:00");

        // Prints dates
        System.out.println("Date1: " + date1);

        // Subtracts the number of months
        System.out.println("Date1 after adding months: "
                           + date1.plusMonths(140));
    }
}

Output:

Date1: 2018-12-12T13:30:30+05:00
Date1 after adding months: 2030-08-12T13:30:30+05:00

Reference: https://docs.oracle.com/javase/10/docs/api/java/time/OffsetDateTime.html#plusMonths(long)