In this article, we will learn how to convert ZonedDateTime to an Instant using toInstant() method of ZonedDateTime/ChronoZonedDateTime provided in Java 1.8 version
For Instant to ZonedDateTime conversion, read Java 8 – How to convert Instant to ZonedDateTime ?
Convert ZonedDateTime to an Instant :
- ZonedDateTime has a method toInstant() which returns Instant
- toInstant() – Converts invoking ZonedDateTime/ChronoZonedDateTime to an Instant
- Using this method, it is very easy to convert ZonedDateTime to an Instant
- After conversion, Instant will represent instantaneous/current moment at GMT/UTC
- Lets see an example for conversion of ZonedDateTime to an Instant in the below illustration
ConvertZonedDateTimeToInstant.java
package in.bench.resources.java8.zoneddatetime.examples;
import java.time.Instant;
import java.time.ZonedDateTime;
public class ConvertZonedDateTimeToInstant {
public static void main(String[] args) {
// 1. get Zoned Date/time
ZonedDateTime zonedDateTime = ZonedDateTime.now();
System.out.println("Zoned Date/time is :- \n"
+ zonedDateTime);
// 2. get Zone
System.out.println("\nZone is :- \n"
+ zonedDateTime.getZone());
// 3. convert ZonedDateTime to Instant using toOffsetDateTime()
Instant instant = zonedDateTime.toInstant();
System.out.print("\nConversion of ZonedDateTime to an Instant is :- \n"
+ instant);
}
}
Output:
Zoned Date/time is :-
2022-08-13T15:23:42.875564600+05:30[Asia/Calcutta]
Zone is :-
Asia/Calcutta
Conversion of ZonedDateTime to an Instant is :-
2022-08-13T09:53:42.875564600Z
Related Articles:
- Java 8 – ZonedDateTime with method details and examples
- Java 8 – How to get Date, Time and Zone fields from ZonedDateTime ?
- Java 8 – How to form ZonedDateTime passing Date, Time and Zone fields ?
- Java 8 – How to form ZonedDateTime passing LocalDate, LocalTime and ZoneId ?
- Java 8 – How to form ZonedDateTime passing LocalDateTime and ZoneId ?
- Java 8 – How to form ZonedDateTime passing Instant and ZoneId ?
- Java 8 – How to parse ZonedDateTime in String form ?
- Java 8 – How to convert String to ZonedDateTime ?
- Java 8 – How to convert ZonedDateTime to String ?
- Java 8 – How to convert ZonedDateTime in different formats ?
- Java 8 – How to convert ZonedDateTime in different Format Style ?
- Java 8 – How to convert ZonedDateTime to LocalDateTime ?
- Java 8 – How to convert ZonedDateTime to an OffsetDateTime ?
- Java 8 – How to convert ZonedDateTime to an Instant ?
- Java 8 – How to extract LocalDate and LocalTime and LocalDateTime from ZonedDateTime ?
- Java 8 – How to convert ZonedDateTime to java.util.Date and vice-versa ?
- Java 8 – How to convert ZonedDateTime to java.sql.Timestamp and vice-versa ?
- Java 8 – How to convert ZonedDateTime to Calendar and vice-versa ?
- Java 8 – How to convert ZonedDateTime to GregorianCalendar and vice-versa ?
- Java 8 – How to convert ZonedDateTime to XMLGregorianCalendar and vice-versa ?
- Java 8 – How to convert java.util.Date to ZonedDateTime in different ways ?
- Java 8 – How to add Date and Time fields to ZonedDateTime ?
- Java 8 – How to subtract Date and Time fields from ZonedDateTime ?
- Java 8 – How to alter Date, Time and Zone fields of ZonedDateTime ?
- Java 8 – How to check whether a ZonedDateTime is Before another ZonedDateTime ?
- Java 8 – How to check whether a ZonedDateTime is After another ZonedDateTime ?
- Java 8 – How to compare two ZonedDateTime instances ?
- Java 8 – How to find difference between two ZonedDateTime using Period & Duration ?
- More Java 8 Date/Time API examples
References:
- https://docs.oracle.com/javase/8/docs/api/java/time/ZonedDateTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/chrono/ChronoZonedDateTime.html
- https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html
- https://docs.oracle.com/javase/8/docs/api/java/time/ZoneOffset.html
- https://docs.oracle.com/javase/7/docs/api/java/util/Date.html
- https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html
Happy Coding !!
Happy Learning !!