Here you can find the source of toTimestamp(XMLGregorianCalendar xgc)
public static long toTimestamp(XMLGregorianCalendar xgc)
//package com.java2s; /**/*from w w w .ja va2 s . c o m*/ * This file is part of JEMMA - http://jemma.energy-home.org * (C) Copyright 2013 Telecom Italia (http://www.telecomitalia.it) * * JEMMA is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License (LGPL) version 3 * or later as published by the Free Software Foundation, which accompanies * this distribution and is available at http://www.gnu.org/licenses/lgpl.html * * JEMMA 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 Lesser General Public License (LGPL) for more details. * */ import javax.xml.datatype.XMLGregorianCalendar; public class Main { public static long toTimestamp(XMLGregorianCalendar xgc) { return xgc.toGregorianCalendar().getTimeInMillis(); } }