001// Copyright 2013 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007// http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.services;
016
017import java.util.Date;
018
019/**
020 * Formatting utilities for dates; this is primarily used when communicating server-side dates to the clients in ISO-8601    format.
021 *
022 * @since 5.4
023 */
024public interface DateUtilities
025{
026    /**
027     * Formats the time instant in ISO-8601 format for the UTC time zone.
028     *
029     * @param date
030     *         to format, may not be null
031     * @return formatted date
032     */
033    String formatISO8601(Date date);
034}