Java ZonedDateTime

by Online Tutorials Library July 14, 2022

Java ZonedDateTime class

Java ZonedDateTime class is an immutable representation of a date-time with a time-zone. It inherits Object class and implements the ChronoZonedDateTime interface.

ZonedDateTime class is used to store all date and time fields, to a precision of nanoseconds, and a time-zone with a zone offset used to handle ambiguous local date-times.

Java ZonedDateTime class declaration

Let’s see the declaration of java.time.ZonedDateTime class.

 public final class ZonedDateTime extends Object  implements Temporal, ChronoZonedDateTime<LocalDate>, Serializable 

Methods of Java ZonedDateTime

Method	Description
String format(DateTimeFormatter formatter)	It is used to format this date-time using the specified formatter.
int get(TemporalField field)	It is used to get the value of the specified field from this date-time as an int.
ZoneId getZone()	It is used to get the time-zone, such as ‘Asia/Kolkata’.
ZonedDateTime withZoneSameInstant(ZoneId zone)	It is used to return a copy of this date-time with a different time-zone, retaining the instant.
static ZonedDateTimenow()	It is used to obtain the current date-time from the system clock in the default time-zone.
static ZonedDateTimeof(LocalDate date, LocalTime time, ZoneId zone)	It is used to obtain an instance of ZonedDateTime from a local date and time.
ZonedDateTime minus(long amountToSubtract, TemporalUnit unit)	It is used to return a copy of this date-time with the specified amount subtracted.
ZonedDateTime plus(long amountToAdd, TemporalUnit unit)	It is used to return a copy of this date-time with the specified amount added.

Java ZonedDateTime class Example

 import java.time.ZonedDateTime; public class ZonedDateTimeExample1{   public static void main(String[] args) {     ZonedDateTime zone = ZonedDateTime.parse(“2016-10-05T08:20:10+05:30[Asia/Kolkata]”);     System.out.println(zone);   } } 

Test it Now

Output:

2016-10-05T08:20:10+05:30[Asia/Kolkata]

Java ZonedDateTime class Example: of() and withZoneSameInstant()

 import java.time.*; public class ZonedDateTimeExample2{   public static void main(String[] args) {     LocalDateTime  ldt = LocalDateTime.of(2017, Month.JANUARY,  19,   15,   26);     ZoneId  india = ZoneId.of(“Asia/Kolkata”);      ZonedDateTime zone1  = ZonedDateTime.of(ldt, india);      System.out.println(“In India Central Time Zone: ” + zone1);     ZoneId  tokyo = ZoneId.of(“Asia/Tokyo”);      ZonedDateTime zone2   = zone1.withZoneSameInstant(tokyo);      System.out.println(“In Tokyo Central Time Zone:”  + zone2);   } } 

Test it Now

Output:

In India Central Time Zone: 2017-01-19T15:26+05:30[Asia/Kolkata] In Tokyo Central Time Zone:2017-01-19T18:56+09:00[Asia/Tokyo]

Java ZonedDateTime class Example: getZone()

 import java.time.ZonedDateTime; public class ZonedDateTimeExample3{   public static void main(String[] args) {     ZonedDateTime zone =ZonedDateTime.now();     System.out.println(zone.getZone());   }  } 

Test it Now

Output:

Asia/Kolkata

Java ZonedDateTime class Example: minus()

 import java.time.Period; import java.time.ZonedDateTime; public class ZonedDateTimeExample4 {   public static void main(String[] args) {     ZonedDateTime zone= ZonedDateTime.now();     ZonedDateTime m = zone.minus(Period.ofDays(126));     System.out.println(m);   }  } 

Test it Now

Output:

2016-09-15T12:54:01.354+05:30[Asia/Kolkata]

Java ZonedDateTime class Example: plus()

 import java.time.*; public class ZonedDateTimeExample5{   public static void main(String[] args) {     ZonedDateTime zone= ZonedDateTime.now();     ZonedDateTime p = zone.plus(Period.ofDays(126));     System.out.println(p);   }  } 

Test it Now

Output:

2017-05-25T12:56:12.417+05:30[Asia/Kolkata]

Next TopicJava ZoneId

Java ZonedDateTime

Java ZonedDateTime class

Java ZonedDateTime class declaration

Methods of Java ZonedDateTime

Java ZonedDateTime class Example

Java ZonedDateTime class Example: of() and withZoneSameInstant()

Java ZonedDateTime class Example: getZone()

Java ZonedDateTime class Example: minus()

Java ZonedDateTime class Example: plus()

Java Static Import

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