ZonedDateTime plusYears() method in Java with Examples

The plusYears() method of a ZonedDateTime class used to add the number of years in this ZonedDateTime and return a copy of ZonedDateTime after addition.This method operates on the local time-line, adds years to the local date-time and after adding years 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 plusYears(long years)

Parameters: This method accepts a single parameter years which represents the years to add, It can be negative.

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

Exception: This method throws DateTimeException if the result exceeds the supported date range.



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

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// Java program to demonstrate
// ZonedDateTime.plusYears() 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"
                           + " adding years: "
                           + zoneddatetime);
  
        // add 5 years
        ZonedDateTime returnvalue
            = zoneddatetime.plusYears(5);
  
        // print result
        System.out.println("ZonedDateTime after "
                           + "adding 5 years: "
                           + returnvalue);
    }
}

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Output:

ZonedDateTime before adding years: 2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
ZonedDateTime after adding 5 years: 2023-12-06T19:21:12.123+05:30[Asia/Calcutta]

Program 2:

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// Java program to demonstrate
// ZonedDateTime.plusYears() 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"
                           + " adding years: "
                           + zoneddatetime);
  
        // add 2 years
        ZonedDateTime returnvalue
            = zoneddatetime.plusYears(2);
  
        // print result
        System.out.println("ZonedDateTime after "
                           + "adding 2 years: "
                           + returnvalue);
    }
}

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Output:

ZonedDateTime before adding years: 2018-10-25T23:12:31.123+02:00[Europe/Paris]
ZonedDateTime after adding 2 years: 2020-10-25T23:12:31.123+01:00[Europe/Paris]

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



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