Here you can find the source of formatUtcDateIfNotNull(final Date date)
public static String formatUtcDateIfNotNull(final Date date)
//package com.java2s; /**/*from w w w . j av a 2s.c o m*/ * Copyright 2013 Lee, Seong Hyun (Kevin) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.text.SimpleDateFormat; import java.util.Date; import java.util.TimeZone; public class Main { public static final String ISO8601_DATE_FORMAT_PATTERN = "yyyy-MM-dd"; public static final String UTC = "UTC"; public static String formatUtcDateIfNotNull(final Date date) { if (null == date) { return null; } final SimpleDateFormat dateFormat = new SimpleDateFormat(ISO8601_DATE_FORMAT_PATTERN); dateFormat.setTimeZone(TimeZone.getTimeZone(UTC)); String formattedDate; formattedDate = dateFormat.format(date); return formattedDate; } }