OffsetDateTime minusDays() method in Java with examples

The minusDays() method of OffsetDateTime class in Java returns a copy of this OffsetDateTime with the specified number of days subtracted from the parsed date and time. 

Syntax: 

public OffsetDateTime minusDays(long days)

Parameter: This method accepts a single parameter days which specifies the days to be subtracted from the parsed date. It can be negative also, in that case, it adds the number of days to it. 

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

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

Below programs illustrate the minusDays() method:

Program 1: 

Java

// Java program to demonstrate the minusDays() 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 days
        System.out.println("Date1 after subtracting days: "
                           + date1.minusDays(140));
    }
}

Output:

Date1: 2018-12-12T13:30:30+05:00
Date1 after subtracting days: 2018-07-25T13:30:30+05:00

Program 2: 

Java

// Java program to demonstrate the minusDays() 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 days
        System.out.println("Date1 after subtracting days: "
                           + date1.minusDays(-120));
    }
}

Output:

Date1: 2018-12-12T13:30:30+05:00
Date1 after subtracting days: 2019-04-11T13:30:30+05:00

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