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ZonedDateTime withYear() method in Java with Examples

  • Last Updated : 10 Dec, 2018

withYear() method of a ZonedDateTime class used to alter year in this ZonedDateTime and return a copy of ZonedDateTime after this operation.This method operates on the local time-line, changing the year of the local date-time and after this operation local date-time is converted back to a ZonedDateTime, using the zone ID to obtain the offset. When converting back to ZonedDateTime, if the local date-time is in an overlap, then the offset will be retained if possible, otherwise, the earlier offset will be used. This instance is immutable and unaffected by this method call.

Syntax:

public ZonedDateTime withYear(int year)

Parameters: This method accepts a single parameter year which represents the year to set in the result, from MIN_YEAR to MAX_YEAR.

Return value: This method returns a ZonedDateTime based on this date-time with the requested year.

Exception: This method throws DateTimeException if the year value is invalid.



Below programs illustrate the withYear() method:
Program 1:




// Java program to demonstrate
// ZonedDateTime.withYear() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create a ZonedDateTime object
        ZonedDateTime zoneddatetime
            = ZonedDateTime.parse(
                "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]");
  
        // print instance
        System.out.println("ZonedDateTime before"
                           + " alter year: "
                           + zoneddatetime);
  
        // alter year to 2200
        ZonedDateTime returnvalue
            = zoneddatetime.withYear(2200);
  
        // print result
        System.out.println("ZonedDateTime after "
                           + "alter year: "
                           + returnvalue);
    }
}
Output:

ZonedDateTime before alter year: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
ZonedDateTime after alter year: 2200-12-06T19:21:12.123+05:30[Asia/Calcutta]

Program 2:




// Java program to demonstrate
// ZonedDateTime.withYear() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create a ZonedDateTime object
        ZonedDateTime zoneddatetime
            = ZonedDateTime.parse(
                "2018-10-25T23:12:31.123+02:00[Europe/Paris]");
  
        // print instance
        System.out.println("ZonedDateTime before"
                           + " alter year: "
                           + zoneddatetime);
  
        // alter year to 1923
        ZonedDateTime returnvalue
            = zoneddatetime.withYear(1923);
  
        // print result
        System.out.println("ZonedDateTime after "
                           + "alter year: "
                           + returnvalue);
    }
}
Output:

ZonedDateTime before alter year: 2018-10-25T23:12:31.123+02:00[Europe/Paris]
ZonedDateTime after alter year: 1923-10-25T23:12:31.123Z[Europe/Paris]

Reference: https://docs.oracle.com/javase/10/docs/api/java/time/ZonedDateTime.html#withYear(int)

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