    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}