Java Hour Format formatForCookieExpiry(Date date)

Description

format For Cookie Expiry

License

Apache License

Declaration

public static String formatForCookieExpiry(Date date) 

Method Source Code

//package com.java2s;
/*/*from  w  w w . j a v a 2  s .  co m*/
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.Calendar;

import java.util.Date;

import java.util.Locale;
import java.util.TimeZone;

public class Main {
    /**
     * Like PATTERN_RFC1123 but with hyphens between the date components
     *
     */
    public static final String PATTERN_RFC1123_HYPHENS = "EEE, dd-MMM-yyyy HH:mm:ss zzz";
    public static final TimeZone GMT = TimeZone.getTimeZone("GMT");

    public static String formatForCookieExpiry(Date date) {
        return formatDate(date, PATTERN_RFC1123_HYPHENS);
    }

    public static String formatDate(Date date) {
        Calendar cal = Calendar.getInstance(GMT);
        cal.setTime(date);
        return formatDate(cal);
    }

    /**
     *
     * @param cal
     * @return
     * @see #PATTERN_WEBDAV
     */
    public static String formatDate(Calendar cal) {
        // 2005-03-30T05:18:33Z
        StringBuilder sb = new StringBuilder();
        sb.append(cal.get(Calendar.YEAR)).append("");
        sb.append('-');
        sb.append(pad2(cal.get(Calendar.MONTH) + 1));
        sb.append('-');
        sb.append(pad2(cal.get(Calendar.DAY_OF_MONTH)));
        //        sb.append('-');
        //        sb.append( pad2(cal.get(Calendar.DAY_OF_MONTH)) );
        //        sb.append('-');
        //        sb.append( pad2(cal.get(Calendar.MONTH)) );
        sb.append('T');
        sb.append(pad2(cal.get(Calendar.HOUR_OF_DAY)));
        sb.append(':');
        sb.append(pad2(cal.get(Calendar.MINUTE)));
        sb.append(':');
        sb.append(pad2(cal.get(Calendar.SECOND)));
        sb.append('Z');
        String s = sb.toString();
        //        log.debug(date.toString() + " -> " + s);
        return s;
    }

    /**
     * Formats the given date according to the specified pattern. The pattern
     * must conform to that used by the {@link SimpleDateFormat simple date
     * format} class.
     *
     * @param date The date to format.
     * @param pattern The pattern to use for formatting the date.
     * @return A formatted date string.
     *
     * @throws IllegalArgumentException If the given date pattern is invalid.
     *
     * @see SimpleDateFormat
     */
    public static String formatDate(Date date, String pattern) {
        if (date == null) {
            throw new IllegalArgumentException("date is null");
        }
        if (pattern == null) {
            throw new IllegalArgumentException("pattern is null");
        }

        SimpleDateFormat formatter = new SimpleDateFormat(pattern, Locale.US);
        formatter.setTimeZone(GMT);
        return formatter.format(date);
    }

    public static String pad2(int i) {
        if (i < 10) {
            return "0" + i;
        } else {
            return i + "";
        }
    }
}

Related

1. formateEndTimeString(String time)
2. formatEndTime(String datePre)
3. formatFF(String date)
4. formatFileDate(Date from)
5. formatFilesystemOrder(Date date)
6. formatForFileName()
7. formatForHttpHeader(long unixTime)
8. formatFromDate(Date date)
9. formatFromString(String date)