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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 * Unless required by applicable law or agreed to in writing,
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 * KIND, either express or implied.  See the License for the
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package org.apache.http.impl.cookie;

import java.util.Date;
import java.util.TimeZone;

A utility class for parsing and formatting HTTP dates as used in cookies and
other headers.  This class handles dates as defined by RFC 2616 section
3.3.1 as well as some other common non-standard formats.
Since:
4.0
Deprecated:
(4.3) Use DateUtils./**
 * A utility class for parsing and formatting HTTP dates as used in cookies and
 * other headers.  This class handles dates as defined by RFC 2616 section
 * 3.3.1 as well as some other common non-standard formats.
 *
 *
 * @since 4.0
 *
 * @deprecated (4.3) Use {@link org.apache.http.client.utils.DateUtils}.
 */
@Deprecated
public final class DateUtils {

    
Date format pattern used to parse HTTP date headers in RFC 1123 format.
/**
     * Date format pattern used to parse HTTP date headers in RFC 1123 format.
     */
    public static final String PATTERN_RFC1123 = org.apache.http.client.utils.DateUtils.PATTERN_RFC1123;

    
Date format pattern used to parse HTTP date headers in RFC 1036 format.
/**
     * Date format pattern used to parse HTTP date headers in RFC 1036 format.
     */
    public static final String PATTERN_RFC1036 = org.apache.http.client.utils.DateUtils.PATTERN_RFC1036;

    
Date format pattern used to parse HTTP date headers in ANSI C asctime() format. /**
     * Date format pattern used to parse HTTP date headers in ANSI C
     * {@code asctime()} format.
     */
    public static final String PATTERN_ASCTIME = org.apache.http.client.utils.DateUtils.PATTERN_ASCTIME;

    public static final TimeZone GMT = TimeZone.getTimeZone("GMT");

    
Parses a date value.  The formats used for parsing the date value are retrieved from
the default http params.
Params:
dateValue – the date value to parse
Throws:
DateParseException – if the value could not be parsed using any of the
supported date formats
Returns:
the parsed date/**
     * Parses a date value.  The formats used for parsing the date value are retrieved from
     * the default http params.
     *
     * @param dateValue the date value to parse
     *
     * @return the parsed date
     *
     * @throws DateParseException if the value could not be parsed using any of the
     * supported date formats
     */
    public static Date parseDate(final String dateValue) throws DateParseException {
        return parseDate(dateValue, null, null);
    }

    
Parses the date value using the given date formats.
Params:
dateValue – the date value to parse
dateFormats – the date formats to use
Throws:
DateParseException – if none of the dataFormats could parse the dateValue
Returns:
the parsed date/**
     * Parses the date value using the given date formats.
     *
     * @param dateValue the date value to parse
     * @param dateFormats the date formats to use
     *
     * @return the parsed date
     *
     * @throws DateParseException if none of the dataFormats could parse the dateValue
     */
    public static Date parseDate(final String dateValue, final String[] dateFormats)
        throws DateParseException {
        return parseDate(dateValue, dateFormats, null);
    }

    
Parses the date value using the given date formats.
Params:
dateValue – the date value to parse
dateFormats – the date formats to use
startDate – During parsing, two digit years will be placed in the range startDate to startDate + 100 years. This value may be null. When null is given as a parameter, year 2000 will be used.
Throws:
DateParseException – if none of the dataFormats could parse the dateValue
Returns:
the parsed date/**
     * Parses the date value using the given date formats.
     *
     * @param dateValue the date value to parse
     * @param dateFormats the date formats to use
     * @param startDate During parsing, two digit years will be placed in the range
     * {@code startDate} to {@code startDate + 100 years}. This value may
     * be {@code null}. When {@code null} is given as a parameter, year
     * {@code 2000} will be used.
     *
     * @return the parsed date
     *
     * @throws DateParseException if none of the dataFormats could parse the dateValue
     */
    public static Date parseDate(
        final String dateValue,
        final String[] dateFormats,
        final Date startDate
    ) throws DateParseException {
        final Date d = org.apache.http.client.utils.DateUtils.parseDate(dateValue, dateFormats, startDate);
        if (d == null) {
            throw new DateParseException("Unable to parse the date " + dateValue);
        }
        return d;
    }

    
Formats the given date according to the RFC 1123 pattern.
Params:
date – The date to format.
See Also:
PATTERN_RFC1123
Returns:
An RFC 1123 formatted date string./**
     * Formats the given date according to the RFC 1123 pattern.
     *
     * @param date The date to format.
     * @return An RFC 1123 formatted date string.
     *
     * @see #PATTERN_RFC1123
     */
    public static String formatDate(final Date date) {
        return org.apache.http.client.utils.DateUtils.formatDate(date);
    }

    
Formats the given date according to the specified pattern. The pattern must conform to that used by the simple
date format class. 
Params:
date – The date to format.
pattern – The pattern to use for formatting the date.
Throws:
IllegalArgumentException – If the given date pattern is invalid.
See Also:
SimpleDateFormat
Returns:
A formatted date string./**
     * Formats the given date according to the specified pattern.  The pattern
     * must conform to that used by the {@link java.text.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 java.text.SimpleDateFormat
     */
    public static String formatDate(final Date date, final String pattern) {
        return org.apache.http.client.utils.DateUtils.formatDate(date, pattern);
    }

    
This class should not be instantiated. /** This class should not be instantiated. */
    private DateUtils() {
    }

}