Parse date from JSON to Java

Question

I am calling t a web service to retrieve dates. These dates come in this format

"2018-01-24T05:00:00.000Z"

Now, I need to parse that to more legible, something like "dd-MM-YYYY", e.g. 1-24-2018.

How can I do it?

I'm using Android Studio and a read about Instant but it requires minSdkVersion 26 and is set to 15 what is perfect for me right now.

Can you post more examples of the format, it's not clear what it actually signifies — theboringdeveloper, Jan 24 '18 at 18:04
You are asking: 1) how to parse a date, and 2) how to format a date. Both questions have been answered a gazillion times, and all you have to do is **research**, aka a web search for those two questions. http://idownvotedbecau.se/noresearch/ — Andreas, Jan 24 '18 at 18:32
I believe you *can* use `Instant`on API level 15 through [ThreeTenABP](https://github.com/JakeWharton/ThreeTenABP). And that you *should* consider doing so. In that case import `org.threeten.bp.Instant` and other date-time classes from the same package with subpackages. — Ole V.V., Jan 24 '18 at 20:17
@GursheeshSingh, it’s clearly ISO 8601, so well-defined. The format can for instance be descirbed as by [`DateTimeFormatter.ISO_INSTANT`](https://docs.oracle.com/javase/9/docs/api/java/time/format/DateTimeFormatter.html#ISO_INSTANT). — Ole V.V., Jan 24 '18 at 20:59

Saurabh Singh · Answer 1 · 2019-10-13T18:48:30.763

2

You can use custom deserializer for JSON for dates.

You can easily parse them to Java Date object

DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX");
Date date = dateFormat.parse("2018-01-24T05:00:00.000Z");

for more details see https://docs.oracle.com/javase/8/docs/api/java/text/SimpleDateFormat.html

edited Oct 13 '19 at 18:48

answered Jan 24 '18 at 18:11

Saurabh Singh

381
5
15

score -1 · Answer 2 · answered Jan 24 '18 at 18:06

You can try something like this....

I did this in Eclipse....

    public static void main(String[] args) throws Exception {


    String jsonDate = "2018-01-24T05:00:00.000Z";

    String[] split = jsonDate.split("-");

    System.out.println(split[0]);
    System.out.println(split[1]);
    System.out.println(split[2].substring(0, 2));

    String month = split[1].toString();
    String day = split[2].substring(0, 2).toString();
    String year = split[0].toString();

    System.out.println(month + "-" + day + "-" + year);
}

output

2018

01

24

01-24-2018

score -1 · Answer 3 · answered Jan 24 '18 at 18:14

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

private String formatDateFromString (String dateString) {
        try {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS" );
            Date date = simpleDateFormat.parse(dateString);
            simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy");
            return simpleDateFormat.format(date);
        } catch (ParseException e) {
        }
        return "";
    }

Parse date from JSON to Java

3 Answers3