Here you can find the source of xmlGregorianToString(XMLGregorianCalendar timestamp)
public static String xmlGregorianToString(XMLGregorianCalendar timestamp)
//package com.java2s; /*/*from www. ja va 2 s . com*/ ?Developed with the contribution of the European Commission - Directorate General for Maritime Affairs and Fisheries ? European Union, 2015-2016. This file is part of the Integrated Fisheries Data Management (IFDM) Suite. The IFDM Suite is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version. The IFDM Suite is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the IFDM Suite. If not, see <http://www.gnu.org/licenses/>. */ import javax.xml.datatype.XMLGregorianCalendar; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; public class Main { final static String FORMAT = "yyyy-MM-dd HH:mm:ss Z"; public static String xmlGregorianToString(XMLGregorianCalendar timestamp) { if (timestamp == null) { return null; } else { return dateToString(timestamp.toGregorianCalendar().getTime()); } } public static String dateToString(Date date) { String dateString = null; if (date != null) { DateFormat df = new SimpleDateFormat(FORMAT); dateString = df.format(date); } return dateString; } }