OffsetDateTime minusHours() method in Java with examples

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

Syntax:

public OffsetDateTime minusHours(long hours)

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

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

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

Below programs illustrate the minusHours() method:

Program 1:

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

Output:

Date1: 2018-12-12T13:30:30+05:00
Date1 after subtracting hours: 2018-12-17T13:30:30+05:00

Program 2 :

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

Output:

Date1: 2018-12-12T13:30:30+05:00
Date1 after subtracting hours: 2018-12-06T17:30:30+05:00

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