private   static   final  Format XML_DATETIME_FORMAT =  new  SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");

 public   static  String toXmlDateTime(Date date) {
    String result =  null ;

     try  {
        GregorianCalendar gregorianCalendar =  new  GregorianCalendar();
        gregorianCalendar.setTime(date);
        DatatypeFactory datatypeFactory = DatatypeFactory.newInstance();
        XMLGregorianCalendar xmlGregorianCalendar = datatypeFactory.newXMLGregorianCalendar(gregorianCalendar);
        result = xmlGregorianCalendar.toXMLFormat();
    }  catch  (DatatypeConfigurationException e) {
        result = XML_DATETIME_FORMAT.format(date);
    }

     return  result;
}