Here you can find the source of now()
public static String now()
//package com.java2s; /*/*from w w w . j a v a 2s . c o m*/ * #%L * Timbuctoo tools * ======= * Copyright (C) 2012 - 2015 Huygens ING * ======= * This program 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 (at your option) any later version. * * This program 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 this program. If not, see * <http://www.gnu.org/licenses/gpl-3.0.html>. * #L% */ import java.text.SimpleDateFormat; import java.util.Date; import java.util.TimeZone; public class Main { public static final String ISO_FORMAT = "yyyy-MM-dd'T'HH:mm:ss'Z'"; private static final TimeZone UTC = TimeZone.getTimeZone("UTC"); public static String now() { return dateToString(new Date()); } public static String dateToString(Date date) { SimpleDateFormat format = new SimpleDateFormat(ISO_FORMAT); format.setTimeZone(UTC); return format.format(date); } }