The atZone(ZoneId zone) method of ChronoLocalDateTime interface is used to combine this ChronoLocalDateTime with a time-zone whose ZoneId is given as parameter to create an ZonedDateTime object. This method takes ZoneId as a parameter and combines the time-zone with this ChronoLocalDateTime after operation returns a ChronoZonedDateTime object.
Syntax:
ChronoZonedDateTime<D> atZone(ZoneId zone)
Parameters: This method accepts one parameter zone which is the zone to combine to this ChronoLocalDateTime object. It should not be null.
Return Value: This method returns a ChronoZonedDateTime which is the combination of current zone of ChronoLocalDateTime and the zone passed as the parameter.
Below programs illustrate the ChronoLocalDateTime.atZone() method:
Program 1:
// Java program to demonstrate// ChronoLocalDateTime.atZone() method  import java.time.*;import java.time.chrono.*;  public class GFG {    public static void main(String[] args)    {          // create an ChronoLocalDateTime object        ChronoLocalDateTime date            = LocalDateTime.parse("2018-12-06T19:21:12");          // print ChronoLocalDateTime Value        System.out.println("ChronoLocalDateTime: "                           + date);          // create ZoneId object        ZoneId zone = ZoneId.of("Europe/Paris");          // apply atZone method of ChronoLocalDateTime class        ChronoZonedDateTime result = date.atZone(zone);          // print results        System.out.println("ChronoZonedDateTime: "                           + result);    }} |
Output:
ChronoLocalDateTime: 2018-12-06T19:21:12 ChronoZonedDateTime: 2018-12-06T19:21:12+01:00[Europe/Paris]
Program 2:
// Java program to demonstrate// ChronoLocalDateTime.atZone() method  import java.time.*;import java.time.chrono.*;  public class GFG {    public static void main(String[] args)    {          // create an ChronoLocalDateTime object        ChronoLocalDateTime date            = LocalDateTime.parse("2018-12-06T19:21:12");          // print ChronoLocalDateTime Value        System.out.println("ChronoLocalDateTime: "                           + date);          // create ZoneId object        ZoneId zone = ZoneId.of("Asia/Aden");          // apply atZone method        ChronoZonedDateTime result            = date.atZone(zone);          // print results        System.out.println("ChronoZonedDateTime: "                           + result);    }} |
Output:
ChronoLocalDateTime: 2018-12-06T19:21:12 ChronoZonedDateTime: 2018-12-06T19:21:12+03:00[Asia/Aden]
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