Here you can find the source of toXMLGregorianCalendar(long timestamp)
public static XMLGregorianCalendar toXMLGregorianCalendar(long timestamp)
//package com.java2s; /**// www . jav a 2 s .c om * 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 java.util.GregorianCalendar; import java.util.TimeZone; import javax.xml.datatype.DatatypeConfigurationException; import javax.xml.datatype.DatatypeFactory; import javax.xml.datatype.XMLGregorianCalendar; public class Main { public static final TimeZone GMT_TIME_ZONE = TimeZone.getTimeZone("GMT"); public static XMLGregorianCalendar toXMLGregorianCalendar(long timestamp) { GregorianCalendar gc = new GregorianCalendar(GMT_TIME_ZONE); gc.setTimeInMillis(timestamp); try { return DatatypeFactory.newInstance().newXMLGregorianCalendar(gc); } catch (DatatypeConfigurationException e) { e.printStackTrace(); return null; } } }