CODE EXAMPLE FOR JAVA

LocalDateTime to XMLGregorianCalendar

LocalDateTime localDatetime = LocalDateTime.now();
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss");

String formattedDate = localDatetime.format(formatter);
XMLGregorianCalendar calendar = DatatypeFactory.newInstance().newXMLGregorianCalendar(formattedDate);