joda time, DateTimeFormatter

Question

I have following code

dateTimeFormat = ISODateTimeFormat.dateTimeNoMillis()

and i use dateTimeFormat below

public static String print(Date value) {
    return dateTimeFormat.print(value.getTime());
}

And now i get problem, in my print method i put many date instances with + 4 hours time, and after dateTimeFormat.print(value.getTime()); i get time with +3 hour, but one of all date instances become with +4 hours, this error for me.

In all date instances has the same time zone Europe/Moscow

What may be wrong in my case?

score 2 · Answer 1 · answered Apr 22 '15 at 14:55

2

In all date instances has the same time zone Europe/Moscow

A Date instance doesn't have a time zone - it's just an instant in time. But you should probably specify the time zone for your formatter, e.g.

dateTimeFormat = ISODateTimeFormat
    .dateTimeNoMillis()
    .withZoneUTC();

If you want a value which does know about a time zone, you should use DateTime instead of Date.

answered Apr 22 '15 at 14:55

Jon Skeet

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Aftet this option i dont see my + x hours in my soap responce 2014-09-17T00:00:00Z what code help me show my + x hours? – user3569530 Apr 22 '15 at 15:21
1

@user3569530: Well what zone do you want to use? As I said, a Date doesn't have a zone... – Jon Skeet Apr 22 '15 at 15:25

score 2 · Answer 2 · answered Jun 20 '21 at 13:20

java.time

The java.util Date-Time API and their formatting API, SimpleDateFormat are outdated and error-prone. It is recommended to stop using them completely and switch to the modern Date-Time API^*.

Also, quoted below is a notice from the home page of Joda-Time:

Note that from Java SE 8 onwards, users are asked to migrate to java.time (JSR-310) - a core part of the JDK which replaces this project.

Solution using java.time, the modern Date-Time API:

import java.time.ZoneId;
import java.time.temporal.ChronoUnit;
import java.util.Date;

public class Main {
    public static void main(String[] args) {
        System.out.println(print(new Date()));
    }

    public static String print(Date value) {
        return value.toInstant()
                .atZone(ZoneId.of("Europe/Moscow"))
                .truncatedTo(ChronoUnit.SECONDS)
                .toOffsetDateTime()
                .toString();
    }
}

Output:

2021-06-20T16:18:56+03:00

ONLINE DEMO

Learn more about the modern Date-Time API from Trail: Date Time.

^{* For any reason, if you have to stick to Java 6 or Java 7, you can use ThreeTen-Backport which backports most of the java.time functionality to Java 6 & 7. If you are working for an Android project and your Android API level is still not compliant with Java-8, check Java 8+ APIs available through desugaring and How to use ThreeTenABP in Android Project.}

joda time, DateTimeFormatter

2 Answers2

java.time