Java Convert Date to ZonedDateTime in UTC

Tags: Java Date Java ZonedDateTime Java 8 UTC

In this Java core tutorial we learn how to convert a java.util.Date object to a java.time.LocalDateTime object in UTC time zone offset.

How to convert Date to UTC LocalDateTime in Java

In Java, with a given Date object we can follow these steps to convert it to an UTC LocalDateTime object.

  • Step 1: use the Date.toInstant() method to convert the Date object to an Instant object.
  • Step 2: use the Instant.atZone(ZoneId zone) method to convert the Instant object of step 1 to a ZonedDateTime object in UTC time zone.

ConvertDateToUTCZonedDateTimeExample1.java 

import java.time.Instant;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.Date;

public class ConvertDateToUTCZonedDateTimeExample1 {
    public static void main(String... args) {
        Date date = new Date();

        // Convert Date object to UTC ZonedDateTime object
        Instant instant = date.toInstant();
        ZoneId utcZoneId = ZoneId.of("Z");
        ZonedDateTime zonedDateTime = instant.atZone(utcZoneId);

        System.out.println("Date: " + date);
        System.out.println("UTC ZonedDateTime: " + zonedDateTime);
    }
}
The output as below. 
Date: Tue May 24 21:38:11 ICT 2022
UTC ZonedDateTime: 2022-05-24T14:38:11.408Z

Happy Coding 😊

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