What is the best way to convert XMLGregorianCalendar to MM/dd/yyyy hh:mm String?

Question

What is the best way to convert XMLGregorianCalendar objects to \'MM/dd/yyyy hh:mm\' String?

Answer 1

This example convert XMLGregorianCalendar to date

XMLGregorianCalendar xmlCalendar = DatatypeFactory.newInstance().newXMLGregorianCalendar(new GregorianCalendar());
Date date = xmlCalendar.toGregorianCalendar().getTime();

This example convert date to string

DateFormat df = new SimpleDateFormat("MM/dd/yyyy hh:mm");
String dateStr = df.format(GregorianCalendar.getInstance().getTime());

Answer 2

You can use toGregorianCalendar() method for this.

E.g.:

SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy hh:mm");
String date = sdf.format(xmlGregorianCalendar.toGregorianCalendar().getTime());

In case, you need to convert that calendar to different TimeZone and Locale, use toGregorianCalendar(TimeZone timezone, Locale aLocale, XMLGregorianCalendar defaults)

Answer 3

Please check this static utility. You just mentioned a pattern like "ddMMyy" or "HHmm" or what ever you want.. this will work wonderfully.

public static String getDateTime(XMLGregorianCalendar gDate, String pattern){

    return Optional.ofNullable(gDate)
            .map(gdate -> {
                Calendar calendar = gDate.toGregorianCalendar();
                SimpleDateFormat formatter = new SimpleDateFormat(pattern);
                formatter.setTimeZone(calendar.getTimeZone());
                return formatter.format(calendar.getTime());
            })
            .orElse(null);
}

Answer 4

First use XMLGregorianCalendar#toGregorianCalendar() to get a java.util.Calendar instance out of it.

Calendar calendar = xmlGregorianCalendar.toGregorianCalendar();

From that step on, it's all obvious with a little help of SimpleDateFormat the usual way.

SimpleDateFormat formatter = new SimpleDateFormat("MM/dd/yyyy hh:mm");
formatter.setTimeZone(calendar.getTimeZone());
String dateString = formatter.format(calendar.getTime());

I only wonder if you don't actually want to use HH instead of hh as you aren't formatting the am/pm marker anywhere.

Answer 5

This is an example you are looking for:

XMLGregorianCalendar date = ...; // initialization is out of scope for this example
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy hh:mm");
GregorianCalendar gc = date.toGregorianCalendar();
String formatted_string = sdf.format(gc.getTime());