OffsetDateTime plusDays() method in Java with examples

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

Syntax:

public OffsetDateTime plusHours(long hours)

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

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

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



Below programs illustrate the plusHours() method:

Program 1:

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// Java program to demonstrate the plusHours() 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 adding hours: "
                           + date1.plusHours(-120));
    }
}

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Output:

Date1: 2018-12-12T13:30:30+05:00
Date1 after adding hours: 2018-12-07T13:30:30+05:00

Program 2 :

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// Java program to demonstrate the plusHours() 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 adding hours: "
                           + date1.plusHours(140));
    }
}

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Output:

Date1: 2018-12-12T13:30:30+05:00
Date1 after adding hours: 2018-12-18T09:30:30+05:00

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

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