Convert "2018-02-02T06:54:57.744Z" String to date in Android

Question

Basically my date string is ISO-8601 date string, So I searched for converting ISO-8601 date string to date, but the solutions are lengthy. Here are the details.

I have a string 2018-02-02T06:54:57.744Z want to convert it to Date but I am getting error:

java.text.ParseException: Unparseable date: "2018-02-02T06:54:57.744Z"

I am using following technique to do that but no success:

SimpleDateFormat parser = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssX");
        parser.setTimeZone(TimeZone.getTimeZone("UTC"));
        Date parsed = parser.parse(utcDateString);
        return parsed;

I also use following patterns with SimpleDateFormat but no success:

yyyy-MM-dd'T'HH:mm:ss.SSSZ
yyyy-MM-dd HH:mm:ss.S
yyyy-MM-dd'T'HH:mm:ssX
yyyy-MM-dd'T'HH:mm'Z'

any solution to this problem.

As an aside consider throwing away the long outmoded and notoriously troublesome `SimpleDateFormat` and friends, and adding [ThreeTenABP](https://github.com/JakeWharton/ThreeTenABP) to your Android project in order to use `java.time`, the modern Java date and time API. It is so much nicer to work with. — Ole V.V., Feb 05 '18 at 12:57

score 18 · Accepted Answer · answered Feb 03 '18 at 07:18

18

Z is timezone. You have to add timezone at the end of your date string or simply remove it from format: yyyy-MM-dd'T'HH:mm:ss

A correct date string with timezone is something like this: 2018-02-02T06:54:57.744+0200

answered Feb 03 '18 at 07:18

Ali Behzadian Nejad

8,804
8
56
106

2

Thanks using only yyyy-MM-dd'T'HH:mm:ss in pattern solve the problem. – Zulqarnain Mustafa Feb 03 '18 at 07:26

score 16 · Answer 2 · answered Feb 03 '18 at 07:14

16

Try this

SimpleDateFormat input = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
SimpleDateFormat output = new SimpleDateFormat("dd/MM/yyyy");

Date d = null;
try 
{
   d = input.parse("2018-02-02T06:54:57.744Z");
} 
catch (ParseException e) 
{
   e.printStackTrace();
}
String formatted = output.format(d);
Log.i("DATE", "" + formatted);

OUTPUT

answered Feb 03 '18 at 07:14

Ratilal Chopda

4,162
4
18
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2

Thanks adding this line input.setTimeZone(TimeZone.getTimeZone("UTC")); give me correct result. – Zulqarnain Mustafa Feb 03 '18 at 07:26
@Zulqarnain Thanks, Happy to help you. – Ratilal Chopda Feb 03 '18 at 07:28
Sir thanks for helping me out but Ali Behzadian Nejad answer first and just replacing the pattern to this yyyy-MM-dd'T'HH:mm:ss give me correct result. your answer was more in detail and correct as well I appreciate your time. – Zulqarnain Mustafa Feb 03 '18 at 07:39
@Zulqarnain Thanks as you wish. – Ratilal Chopda Feb 03 '18 at 07:42

Basil Bourque · Answer 3 · 2018-02-04T06:56:39.990

tl;dr

Instant.parse( “2018-02-02T06:54:57.744Z” )

java.time

The modern approach uses java.time classes.

Instant is the replacement for java.util.Date, representing a moment on the timeline in UTC.

Your input string happens to comply with the ISO 8601 standard. The java.time classes use standard formats by default when parsing/generating strings. So no need to specify a formatting pattern.

Instant instant = Instant.parse( “2018-02-02T06:54:57.744Z” ) ;

Best to avoid the troublesome java.util.Date class entirely. But if you insist, convert using new methods added to the old classes.

Date d = Date.from( instant ) ;

For earlier Android, see the ThreeTen-Backport and ThreeTenABP projects.

About java.time

The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.

The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.

To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.

Where to obtain the java.time classes?

Java SE 8, Java SE 9, and later
- Built-in.
- Part of the standard Java API with a bundled implementation.
- Java 9 adds some minor features and fixes.
Java SE 6 and Java SE 7
- Much of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
Android
- Later versions of Android bundle implementations of the java.time classes.
- For earlier Android, the ThreeTenABP project adapts ThreeTen-Backport (mentioned above). See How to use ThreeTenABP….

Convert "2018-02-02T06:54:57.744Z" String to date in Android

3 Answers3

tl;dr

java.time

About java.time