jdk-sandbox: comparison src/java.base/share/classes/java/text/SimpleDateFormat.java

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+/*
+* Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.  Oracle designates this
+* particular file as subject to the "Classpath" exception as provided
+* by Oracle in the LICENSE file that accompanied this code.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*/
+/*
+* (C) Copyright Taligent, Inc. 1996 - All Rights Reserved
+* (C) Copyright IBM Corp. 1996-1998 - All Rights Reserved
+*
+*   The original version of this source code and documentation is copyrighted
+* and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These
+* materials are provided under terms of a License Agreement between Taligent
+* and Sun. This technology is protected by multiple US and International
+* patents. This notice and attribution to Taligent may not be removed.
+*   Taligent is a registered trademark of Taligent, Inc.
+*
+*/
+package java.text;
+import java.io.IOException;
+import java.io.InvalidObjectException;
+import java.io.ObjectInputStream;
+import static java.text.DateFormatSymbols.*;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.GregorianCalendar;
+import java.util.Locale;
+import java.util.Map;
+import java.util.SimpleTimeZone;
+import java.util.SortedMap;
+import java.util.TimeZone;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import sun.util.calendar.CalendarUtils;
+import sun.util.calendar.ZoneInfoFile;
+import sun.util.locale.provider.LocaleProviderAdapter;
+/**
+* <code>SimpleDateFormat</code> is a concrete class for formatting and
+* parsing dates in a locale-sensitive manner. It allows for formatting
+* (date &rarr; text), parsing (text &rarr; date), and normalization.
+*
+* <p>
+* <code>SimpleDateFormat</code> allows you to start by choosing
+* any user-defined patterns for date-time formatting. However, you
+* are encouraged to create a date-time formatter with either
+* <code>getTimeInstance</code>, <code>getDateInstance</code>, or
+* <code>getDateTimeInstance</code> in <code>DateFormat</code>. Each
+* of these class methods can return a date/time formatter initialized
+* with a default format pattern. You may modify the format pattern
+* using the <code>applyPattern</code> methods as desired.
+* For more information on using these methods, see
+* {@link DateFormat}.
+*
+* <h3>Date and Time Patterns</h3>
+* <p>
+* Date and time formats are specified by <em>date and time pattern</em>
+* strings.
+* Within date and time pattern strings, unquoted letters from
+* <code>'A'</code> to <code>'Z'</code> and from <code>'a'</code> to
+* <code>'z'</code> are interpreted as pattern letters representing the
+* components of a date or time string.
+* Text can be quoted using single quotes (<code>'</code>) to avoid
+* interpretation.
+* <code>"''"</code> represents a single quote.
+* All other characters are not interpreted; they're simply copied into the
+* output string during formatting or matched against the input string
+* during parsing.
+* <p>
+* The following pattern letters are defined (all other characters from
+* <code>'A'</code> to <code>'Z'</code> and from <code>'a'</code> to
+* <code>'z'</code> are reserved):
+* <blockquote>
+* <table class="striped">
+* <caption style="display:none">Chart shows pattern letters, date/time component, presentation, and examples.</caption>
+* <thead>
+*     <tr>
+*         <th scope="col" style="text-align:left">Letter
+*         <th scope="col" style="text-align:left">Date or Time Component
+*         <th scope="col" style="text-align:left">Presentation
+*         <th scope="col" style="text-align:left">Examples
+* </thead>
+* <tbody>
+*     <tr>
+*         <th scope="row"><code>G</code>
+*         <td>Era designator
+*         <td><a href="#text">Text</a>
+*         <td><code>AD</code>
+*     <tr>
+*         <th scope="row"><code>y</code>
+*         <td>Year
+*         <td><a href="#year">Year</a>
+*         <td><code>1996</code>; <code>96</code>
+*     <tr>
+*         <th scope="row"><code>Y</code>
+*         <td>Week year
+*         <td><a href="#year">Year</a>
+*         <td><code>2009</code>; <code>09</code>
+*     <tr>
+*         <th scope="row"><code>M</code>
+*         <td>Month in year (context sensitive)
+*         <td><a href="#month">Month</a>
+*         <td><code>July</code>; <code>Jul</code>; <code>07</code>
+*     <tr>
+*         <th scope="row"><code>L</code>
+*         <td>Month in year (standalone form)
+*         <td><a href="#month">Month</a>
+*         <td><code>July</code>; <code>Jul</code>; <code>07</code>
+*     <tr>
+*         <th scope="row"><code>w</code>
+*         <td>Week in year
+*         <td><a href="#number">Number</a>
+*         <td><code>27</code>
+*     <tr>
+*         <th scope="row"><code>W</code>
+*         <td>Week in month
+*         <td><a href="#number">Number</a>
+*         <td><code>2</code>
+*     <tr>
+*         <th scope="row"><code>D</code>
+*         <td>Day in year
+*         <td><a href="#number">Number</a>
+*         <td><code>189</code>
+*     <tr>
+*         <th scope="row"><code>d</code>
+*         <td>Day in month
+*         <td><a href="#number">Number</a>
+*         <td><code>10</code>
+*     <tr>
+*         <th scope="row"><code>F</code>
+*         <td>Day of week in month
+*         <td><a href="#number">Number</a>
+*         <td><code>2</code>
+*     <tr>
+*         <th scope="row"><code>E</code>
+*         <td>Day name in week
+*         <td><a href="#text">Text</a>
+*         <td><code>Tuesday</code>; <code>Tue</code>
+*     <tr>
+*         <th scope="row"><code>u</code>
+*         <td>Day number of week (1 = Monday, ..., 7 = Sunday)
+*         <td><a href="#number">Number</a>
+*         <td><code>1</code>
+*     <tr>
+*         <th scope="row"><code>a</code>
+*         <td>Am/pm marker
+*         <td><a href="#text">Text</a>
+*         <td><code>PM</code>
+*     <tr>
+*         <th scope="row"><code>H</code>
+*         <td>Hour in day (0-23)
+*         <td><a href="#number">Number</a>
+*         <td><code>0</code>
+*     <tr>
+*         <th scope="row"><code>k</code>
+*         <td>Hour in day (1-24)
+*         <td><a href="#number">Number</a>
+*         <td><code>24</code>
+*     <tr>
+*         <th scope="row"><code>K</code>
+*         <td>Hour in am/pm (0-11)
+*         <td><a href="#number">Number</a>
+*         <td><code>0</code>
+*     <tr>
+*         <th scope="row"><code>h</code>
+*         <td>Hour in am/pm (1-12)
+*         <td><a href="#number">Number</a>
+*         <td><code>12</code>
+*     <tr>
+*         <th scope="row"><code>m</code>
+*         <td>Minute in hour
+*         <td><a href="#number">Number</a>
+*         <td><code>30</code>
+*     <tr>
+*         <th scope="row"><code>s</code>
+*         <td>Second in minute
+*         <td><a href="#number">Number</a>
+*         <td><code>55</code>
+*     <tr>
+*         <th scope="row"><code>S</code>
+*         <td>Millisecond
+*         <td><a href="#number">Number</a>
+*         <td><code>978</code>
+*     <tr>
+*         <th scope="row"><code>z</code>
+*         <td>Time zone
+*         <td><a href="#timezone">General time zone</a>
+*         <td><code>Pacific Standard Time</code>; <code>PST</code>; <code>GMT-08:00</code>
+*     <tr>
+*         <th scope="row"><code>Z</code>
+*         <td>Time zone
+*         <td><a href="#rfc822timezone">RFC 822 time zone</a>
+*         <td><code>-0800</code>
+*     <tr>
+*         <th scope="row"><code>X</code>
+*         <td>Time zone
+*         <td><a href="#iso8601timezone">ISO 8601 time zone</a>
+*         <td><code>-08</code>; <code>-0800</code>;  <code>-08:00</code>
+* </tbody>
+* </table>
+* </blockquote>
+* Pattern letters are usually repeated, as their number determines the
+* exact presentation:
+* <ul>
+* <li><strong><a id="text">Text:</a></strong>
+*     For formatting, if the number of pattern letters is 4 or more,
+*     the full form is used; otherwise a short or abbreviated form
+*     is used if available.
+*     For parsing, both forms are accepted, independent of the number
+*     of pattern letters.<br><br></li>
+* <li><strong><a id="number">Number:</a></strong>
+*     For formatting, the number of pattern letters is the minimum
+*     number of digits, and shorter numbers are zero-padded to this amount.
+*     For parsing, the number of pattern letters is ignored unless
+*     it's needed to separate two adjacent fields.<br><br></li>
+* <li><strong><a id="year">Year:</a></strong>
+*     If the formatter's {@link #getCalendar() Calendar} is the Gregorian
+*     calendar, the following rules are applied.<br>
+*     <ul>
+*     <li>For formatting, if the number of pattern letters is 2, the year
+*         is truncated to 2 digits; otherwise it is interpreted as a
+*         <a href="#number">number</a>.
+*     <li>For parsing, if the number of pattern letters is more than 2,
+*         the year is interpreted literally, regardless of the number of
+*         digits. So using the pattern "MM/dd/yyyy", "01/11/12" parses to
+*         Jan 11, 12 A.D.
+*     <li>For parsing with the abbreviated year pattern ("y" or "yy"),
+*         <code>SimpleDateFormat</code> must interpret the abbreviated year
+*         relative to some century.  It does this by adjusting dates to be
+*         within 80 years before and 20 years after the time the <code>SimpleDateFormat</code>
+*         instance is created. For example, using a pattern of "MM/dd/yy" and a
+*         <code>SimpleDateFormat</code> instance created on Jan 1, 1997,  the string
+*         "01/11/12" would be interpreted as Jan 11, 2012 while the string "05/04/64"
+*         would be interpreted as May 4, 1964.
+*         During parsing, only strings consisting of exactly two digits, as defined by
+*         {@link Character#isDigit(char)}, will be parsed into the default century.
+*         Any other numeric string, such as a one digit string, a three or more digit
+*         string, or a two digit string that isn't all digits (for example, "-1"), is
+*         interpreted literally.  So "01/02/3" or "01/02/003" are parsed, using the
+*         same pattern, as Jan 2, 3 AD.  Likewise, "01/02/-3" is parsed as Jan 2, 4 BC.
+*     </ul>
+*     Otherwise, calendar system specific forms are applied.
+*     For both formatting and parsing, if the number of pattern
+*     letters is 4 or more, a calendar specific {@linkplain
+*     Calendar#LONG long form} is used. Otherwise, a calendar
+*     specific {@linkplain Calendar#SHORT short or abbreviated form}
+*     is used.<br>
+*     <br>
+*     If week year {@code 'Y'} is specified and the {@linkplain
+*     #getCalendar() calendar} doesn't support any <a
+*     href="../util/GregorianCalendar.html#week_year"> week
+*     years</a>, the calendar year ({@code 'y'}) is used instead. The
+*     support of week years can be tested with a call to {@link
+*     DateFormat#getCalendar() getCalendar()}.{@link
+*     java.util.Calendar#isWeekDateSupported()
+*     isWeekDateSupported()}.<br><br></li>
+* <li><strong><a id="month">Month:</a></strong>
+*     If the number of pattern letters is 3 or more, the month is
+*     interpreted as <a href="#text">text</a>; otherwise,
+*     it is interpreted as a <a href="#number">number</a>.<br>
+*     <ul>
+*     <li>Letter <em>M</em> produces context-sensitive month names, such as the
+*         embedded form of names. Letter <em>M</em> is context-sensitive in the
+*         sense that when it is used in the standalone pattern, for example,
+*         "MMMM", it gives the standalone form of a month name and when it is
+*         used in the pattern containing other field(s), for example, "d MMMM",
+*         it gives the format form of a month name. For example, January in the
+*         Catalan language is "de gener" in the format form while it is "gener"
+*         in the standalone form. In this case, "MMMM" will produce "gener" and
+*         the month part of the "d MMMM" will produce "de gener". If a
+*         {@code DateFormatSymbols} has been set explicitly with constructor
+*         {@link #SimpleDateFormat(String,DateFormatSymbols)} or method {@link
+*         #setDateFormatSymbols(DateFormatSymbols)}, the month names given by
+*         the {@code DateFormatSymbols} are used.</li>
+*     <li>Letter <em>L</em> produces the standalone form of month names.</li>
+*     </ul>
+*     <br></li>
+* <li><strong><a id="timezone">General time zone:</a></strong>
+*     Time zones are interpreted as <a href="#text">text</a> if they have
+*     names. For time zones representing a GMT offset value, the
+*     following syntax is used:
+*     <pre>
+*     <a id="GMTOffsetTimeZone"><i>GMTOffsetTimeZone:</i></a>
+*             <code>GMT</code> <i>Sign</i> <i>Hours</i> <code>:</code> <i>Minutes</i>
+*     <i>Sign:</i> one of
+*             <code>+ -</code>
+*     <i>Hours:</i>
+*             <i>Digit</i>
+*             <i>Digit</i> <i>Digit</i>
+*     <i>Minutes:</i>
+*             <i>Digit</i> <i>Digit</i>
+*     <i>Digit:</i> one of
+*             <code>0 1 2 3 4 5 6 7 8 9</code></pre>
+*     <i>Hours</i> must be between 0 and 23, and <i>Minutes</i> must be between
+*     00 and 59. The format is locale independent and digits must be taken
+*     from the Basic Latin block of the Unicode standard.
+*     <p>For parsing, <a href="#rfc822timezone">RFC 822 time zones</a> are also
+*     accepted.<br><br></li>
+* <li><strong><a id="rfc822timezone">RFC 822 time zone:</a></strong>
+*     For formatting, the RFC 822 4-digit time zone format is used:
+*
+*     <pre>
+*     <i>RFC822TimeZone:</i>
+*             <i>Sign</i> <i>TwoDigitHours</i> <i>Minutes</i>
+*     <i>TwoDigitHours:</i>
+*             <i>Digit Digit</i></pre>
+*     <i>TwoDigitHours</i> must be between 00 and 23. Other definitions
+*     are as for <a href="#timezone">general time zones</a>.
+*
+*     <p>For parsing, <a href="#timezone">general time zones</a> are also
+*     accepted.
+* <li><strong><a id="iso8601timezone">ISO 8601 Time zone:</a></strong>
+*     The number of pattern letters designates the format for both formatting
+*     and parsing as follows:
+*     <pre>
+*     <i>ISO8601TimeZone:</i>
+*             <i>OneLetterISO8601TimeZone</i>
+*             <i>TwoLetterISO8601TimeZone</i>
+*             <i>ThreeLetterISO8601TimeZone</i>
+*     <i>OneLetterISO8601TimeZone:</i>
+*             <i>Sign</i> <i>TwoDigitHours</i>
+*             {@code Z}
+*     <i>TwoLetterISO8601TimeZone:</i>
+*             <i>Sign</i> <i>TwoDigitHours</i> <i>Minutes</i>
+*             {@code Z}
+*     <i>ThreeLetterISO8601TimeZone:</i>
+*             <i>Sign</i> <i>TwoDigitHours</i> {@code :} <i>Minutes</i>
+*             {@code Z}</pre>
+*     Other definitions are as for <a href="#timezone">general time zones</a> or
+*     <a href="#rfc822timezone">RFC 822 time zones</a>.
+*
+*     <p>For formatting, if the offset value from GMT is 0, {@code "Z"} is
+*     produced. If the number of pattern letters is 1, any fraction of an hour
+*     is ignored. For example, if the pattern is {@code "X"} and the time zone is
+*     {@code "GMT+05:30"}, {@code "+05"} is produced.
+*
+*     <p>For parsing, {@code "Z"} is parsed as the UTC time zone designator.
+*     <a href="#timezone">General time zones</a> are <em>not</em> accepted.
+*
+*     <p>If the number of pattern letters is 4 or more, {@link
+*     IllegalArgumentException} is thrown when constructing a {@code
+*     SimpleDateFormat} or {@linkplain #applyPattern(String) applying a
+*     pattern}.
+* </ul>
+* <code>SimpleDateFormat</code> also supports <em>localized date and time
+* pattern</em> strings. In these strings, the pattern letters described above
+* may be replaced with other, locale dependent, pattern letters.
+* <code>SimpleDateFormat</code> does not deal with the localization of text
+* other than the pattern letters; that's up to the client of the class.
+*
+* <h4>Examples</h4>
+*
+* The following examples show how date and time patterns are interpreted in
+* the U.S. locale. The given date and time are 2001-07-04 12:08:56 local time
+* in the U.S. Pacific Time time zone.
+* <blockquote>
+* <table class="striped">
+* <caption style="display:none">Examples of date and time patterns interpreted in the U.S. locale</caption>
+* <thead>
+*     <tr>
+*         <th scope="col" style="text-align:left">Date and Time Pattern
+*         <th scope="col" style="text-align:left">Result
+* </thead>
+* <tbody>
+*     <tr>
+*         <th scope="row"><code>"yyyy.MM.dd G 'at' HH:mm:ss z"</code>
+*         <td><code>2001.07.04 AD at 12:08:56 PDT</code>
+*     <tr>
+*         <th scope="row"><code>"EEE, MMM d, ''yy"</code>
+*         <td><code>Wed, Jul 4, '01</code>
+*     <tr>
+*         <th scope="row"><code>"h:mm a"</code>
+*         <td><code>12:08 PM</code>
+*     <tr>
+*         <th scope="row"><code>"hh 'o''clock' a, zzzz"</code>
+*         <td><code>12 o'clock PM, Pacific Daylight Time</code>
+*     <tr>
+*         <th scope="row"><code>"K:mm a, z"</code>
+*         <td><code>0:08 PM, PDT</code>
+*     <tr>
+*         <th scope="row"><code>"yyyyy.MMMMM.dd GGG hh:mm aaa"</code>
+*         <td><code>02001.July.04 AD 12:08 PM</code>
+*     <tr>
+*         <th scope="row"><code>"EEE, d MMM yyyy HH:mm:ss Z"</code>
+*         <td><code>Wed, 4 Jul 2001 12:08:56 -0700</code>
+*     <tr>
+*         <th scope="row"><code>"yyMMddHHmmssZ"</code>
+*         <td><code>010704120856-0700</code>
+*     <tr>
+*         <th scope="row"><code>"yyyy-MM-dd'T'HH:mm:ss.SSSZ"</code>
+*         <td><code>2001-07-04T12:08:56.235-0700</code>
+*     <tr>
+*         <th scope="row"><code>"yyyy-MM-dd'T'HH:mm:ss.SSSXXX"</code>
+*         <td><code>2001-07-04T12:08:56.235-07:00</code>
+*     <tr>
+*         <th scope="row"><code>"YYYY-'W'ww-u"</code>
+*         <td><code>2001-W27-3</code>
+* </tbody>
+* </table>
+* </blockquote>
+*
+* <h4><a id="synchronization">Synchronization</a></h4>
+*
+* <p>
+* Date formats are not synchronized.
+* It is recommended to create separate format instances for each thread.
+* If multiple threads access a format concurrently, it must be synchronized
+* externally.
+*
+* @see          <a href="http://docs.oracle.com/javase/tutorial/i18n/format/simpleDateFormat.html">Java Tutorial</a>
+* @see          java.util.Calendar
+* @see          java.util.TimeZone
+* @see          DateFormat
+* @see          DateFormatSymbols
+* @author       Mark Davis, Chen-Lieh Huang, Alan Liu
+* @since 1.1
+*/
+public class SimpleDateFormat extends DateFormat {
+// the official serial version ID which says cryptically
+// which version we're compatible with
+static final long serialVersionUID = 4774881970558875024L;
+// the internal serial version which says which version was written
+// - 0 (default) for version up to JDK 1.1.3
+// - 1 for version from JDK 1.1.4, which includes a new field
+static final int currentSerialVersion = 1;
+/**
+* The version of the serialized data on the stream.  Possible values:
+* <ul>
+* <li><b>0</b> or not present on stream: JDK 1.1.3.  This version
+* has no <code>defaultCenturyStart</code> on stream.
+* <li><b>1</b> JDK 1.1.4 or later.  This version adds
+* <code>defaultCenturyStart</code>.
+* </ul>
+* When streaming out this class, the most recent format
+* and the highest allowable <code>serialVersionOnStream</code>
+* is written.
+* @serial
+* @since 1.1.4
+*/
+private int serialVersionOnStream = currentSerialVersion;
+/**
+* The pattern string of this formatter.  This is always a non-localized
+* pattern.  May not be null.  See class documentation for details.
+* @serial
+*/
+private String pattern;
+/**
+* Saved numberFormat and pattern.
+* @see SimpleDateFormat#checkNegativeNumberExpression
+*/
+private transient NumberFormat originalNumberFormat;
+private transient String originalNumberPattern;
+/**
+* The minus sign to be used with format and parse.
+*/
+private transient char minusSign = '-';
+/**
+* True when a negative sign follows a number.
+* (True as default in Arabic.)
+*/
+private transient boolean hasFollowingMinusSign = false;
+/**
+* True if standalone form needs to be used.
+*/
+private transient boolean forceStandaloneForm = false;
+/**
+* The compiled pattern.
+*/
+private transient char[] compiledPattern;
+/**
+* Tags for the compiled pattern.
+*/
+private static final int TAG_QUOTE_ASCII_CHAR       = 100;
+private static final int TAG_QUOTE_CHARS            = 101;
+/**
+* Locale dependent digit zero.
+* @see #zeroPaddingNumber
+* @see java.text.DecimalFormatSymbols#getZeroDigit
+*/
+private transient char zeroDigit;
+/**
+* The symbols used by this formatter for week names, month names,
+* etc.  May not be null.
+* @serial
+* @see java.text.DateFormatSymbols
+*/
+private DateFormatSymbols formatData;
+/**
+* We map dates with two-digit years into the century starting at
+* <code>defaultCenturyStart</code>, which may be any date.  May
+* not be null.
+* @serial
+* @since 1.1.4
+*/
+private Date defaultCenturyStart;
+private transient int defaultCenturyStartYear;
+private static final int MILLIS_PER_MINUTE = 60 * 1000;
+// For time zones that have no names, use strings GMT+minutes and
+// GMT-minutes. For instance, in France the time zone is GMT+60.
+private static final String GMT = "GMT";
+/**
+* Cache NumberFormat instances with Locale key.
+*/
+private static final ConcurrentMap<Locale, NumberFormat> cachedNumberFormatData
+= new ConcurrentHashMap<>(3);
+/**
+* The Locale used to instantiate this
+* <code>SimpleDateFormat</code>. The value may be null if this object
+* has been created by an older <code>SimpleDateFormat</code> and
+* deserialized.
+*
+* @serial
+* @since 1.6
+*/
+private Locale locale;
+/**
+* Indicates whether this <code>SimpleDateFormat</code> should use
+* the DateFormatSymbols. If true, the format and parse methods
+* use the DateFormatSymbols values. If false, the format and
+* parse methods call Calendar.getDisplayName or
+* Calendar.getDisplayNames.
+*/
+transient boolean useDateFormatSymbols;
+/**
+* Constructs a <code>SimpleDateFormat</code> using the default pattern and
+* date format symbols for the default
+* {@link java.util.Locale.Category#FORMAT FORMAT} locale.
+* <b>Note:</b> This constructor may not support all locales.
+* For full coverage, use the factory methods in the {@link DateFormat}
+* class.
+*/
+public SimpleDateFormat() {
+this("", Locale.getDefault(Locale.Category.FORMAT));
+applyPatternImpl(LocaleProviderAdapter.getResourceBundleBased().getLocaleResources(locale)
+.getDateTimePattern(SHORT, SHORT, calendar));
+}
+/**
+* Constructs a <code>SimpleDateFormat</code> using the given pattern and
+* the default date format symbols for the default
+* {@link java.util.Locale.Category#FORMAT FORMAT} locale.
+* <b>Note:</b> This constructor may not support all locales.
+* For full coverage, use the factory methods in the {@link DateFormat}
+* class.
+* <p>This is equivalent to calling
+* {@link #SimpleDateFormat(String, Locale)
+*     SimpleDateFormat(pattern, Locale.getDefault(Locale.Category.FORMAT))}.
+*
+* @see java.util.Locale#getDefault(java.util.Locale.Category)
+* @see java.util.Locale.Category#FORMAT
+* @param pattern the pattern describing the date and time format
+* @exception NullPointerException if the given pattern is null
+* @exception IllegalArgumentException if the given pattern is invalid
+*/
+public SimpleDateFormat(String pattern)
+{
+this(pattern, Locale.getDefault(Locale.Category.FORMAT));
+}
+/**
+* Constructs a <code>SimpleDateFormat</code> using the given pattern and
+* the default date format symbols for the given locale.
+* <b>Note:</b> This constructor may not support all locales.
+* For full coverage, use the factory methods in the {@link DateFormat}
+* class.
+*
+* @param pattern the pattern describing the date and time format
+* @param locale the locale whose date format symbols should be used
+* @exception NullPointerException if the given pattern or locale is null
+* @exception IllegalArgumentException if the given pattern is invalid
+*/
+public SimpleDateFormat(String pattern, Locale locale)
+{
+if (pattern == null || locale == null) {
+throw new NullPointerException();
+}
+initializeCalendar(locale);
+this.pattern = pattern;
+this.formatData = DateFormatSymbols.getInstanceRef(locale);
+this.locale = locale;
+initialize(locale);
+}
+/**
+* Constructs a <code>SimpleDateFormat</code> using the given pattern and
+* date format symbols.
+*
+* @param pattern the pattern describing the date and time format
+* @param formatSymbols the date format symbols to be used for formatting
+* @exception NullPointerException if the given pattern or formatSymbols is null
+* @exception IllegalArgumentException if the given pattern is invalid
+*/
+public SimpleDateFormat(String pattern, DateFormatSymbols formatSymbols)
+{
+if (pattern == null || formatSymbols == null) {
+throw new NullPointerException();
+}
+this.pattern = pattern;
+this.formatData = (DateFormatSymbols) formatSymbols.clone();
+this.locale = Locale.getDefault(Locale.Category.FORMAT);
+initializeCalendar(this.locale);
+initialize(this.locale);
+useDateFormatSymbols = true;
+}
+/* Initialize compiledPattern and numberFormat fields */
+private void initialize(Locale loc) {
+// Verify and compile the given pattern.
+compiledPattern = compile(pattern);
+/* try the cache first */
+numberFormat = cachedNumberFormatData.get(loc);
+if (numberFormat == null) { /* cache miss */
+numberFormat = NumberFormat.getIntegerInstance(loc);
+numberFormat.setGroupingUsed(false);
+/* update cache */
+cachedNumberFormatData.putIfAbsent(loc, numberFormat);
+}
+numberFormat = (NumberFormat) numberFormat.clone();
+initializeDefaultCentury();
+}
+private void initializeCalendar(Locale loc) {
+if (calendar == null) {
+assert loc != null;
+// The format object must be constructed using the symbols for this zone.
+// However, the calendar should use the current default TimeZone.
+// If this is not contained in the locale zone strings, then the zone
+// will be formatted using generic GMT+/-H:MM nomenclature.
+calendar = Calendar.getInstance(TimeZone.getDefault(), loc);
+}
+}
+/**
+* Returns the compiled form of the given pattern. The syntax of
+* the compiled pattern is:
+* <blockquote>
+* CompiledPattern:
+*     EntryList
+* EntryList:
+*     Entry
+*     EntryList Entry
+* Entry:
+*     TagField
+*     TagField data
+* TagField:
+*     Tag Length
+*     TaggedData
+* Tag:
+*     pattern_char_index
+*     TAG_QUOTE_CHARS
+* Length:
+*     short_length
+*     long_length
+* TaggedData:
+*     TAG_QUOTE_ASCII_CHAR ascii_char
+*
+* </blockquote>
+*
+* where `short_length' is an 8-bit unsigned integer between 0 and
+* 254.  `long_length' is a sequence of an 8-bit integer 255 and a
+* 32-bit signed integer value which is split into upper and lower
+* 16-bit fields in two char's. `pattern_char_index' is an 8-bit
+* integer between 0 and 18. `ascii_char' is an 7-bit ASCII
+* character value. `data' depends on its Tag value.
+* <p>
+* If Length is short_length, Tag and short_length are packed in a
+* single char, as illustrated below.
+* <blockquote>
+*     char[0] = (Tag << 8) | short_length;
+* </blockquote>
+*
+* If Length is long_length, Tag and 255 are packed in the first
+* char and a 32-bit integer, as illustrated below.
+* <blockquote>
+*     char[0] = (Tag << 8) | 255;
+*     char[1] = (char) (long_length >>> 16);
+*     char[2] = (char) (long_length & 0xffff);
+* </blockquote>
+* <p>
+* If Tag is a pattern_char_index, its Length is the number of
+* pattern characters. For example, if the given pattern is
+* "yyyy", Tag is 1 and Length is 4, followed by no data.
+* <p>
+* If Tag is TAG_QUOTE_CHARS, its Length is the number of char's
+* following the TagField. For example, if the given pattern is
+* "'o''clock'", Length is 7 followed by a char sequence of
+* <code>o&nbs;'&nbs;c&nbs;l&nbs;o&nbs;c&nbs;k</code>.
+* <p>
+* TAG_QUOTE_ASCII_CHAR is a special tag and has an ASCII
+* character in place of Length. For example, if the given pattern
+* is "'o'", the TaggedData entry is
+* <code>((TAG_QUOTE_ASCII_CHAR&nbs;<<&nbs;8)&nbs;|&nbs;'o')</code>.
+*
+* @exception NullPointerException if the given pattern is null
+* @exception IllegalArgumentException if the given pattern is invalid
+*/
+private char[] compile(String pattern) {
+int length = pattern.length();
+boolean inQuote = false;
+StringBuilder compiledCode = new StringBuilder(length * 2);
+StringBuilder tmpBuffer = null;
+int count = 0, tagcount = 0;
+int lastTag = -1, prevTag = -1;
+for (int i = 0; i < length; i++) {
+char c = pattern.charAt(i);
+if (c == '\'') {
+// '' is treated as a single quote regardless of being
+// in a quoted section.
+if ((i + 1) < length) {
+c = pattern.charAt(i + 1);
+if (c == '\'') {
+i++;
+if (count != 0) {
+encode(lastTag, count, compiledCode);
+tagcount++;
+prevTag = lastTag;
+lastTag = -1;
+count = 0;
+}
+if (inQuote) {
+tmpBuffer.append(c);
+} else {
+compiledCode.append((char)(TAG_QUOTE_ASCII_CHAR << 8 | c));
+}
+continue;
+}
+}
+if (!inQuote) {
+if (count != 0) {
+encode(lastTag, count, compiledCode);
+tagcount++;
+prevTag = lastTag;
+lastTag = -1;
+count = 0;
+}
+if (tmpBuffer == null) {
+tmpBuffer = new StringBuilder(length);
+} else {
+tmpBuffer.setLength(0);
+}
+inQuote = true;
+} else {
+int len = tmpBuffer.length();
+if (len == 1) {
+char ch = tmpBuffer.charAt(0);
+if (ch < 128) {
+compiledCode.append((char)(TAG_QUOTE_ASCII_CHAR << 8 | ch));
+} else {
+compiledCode.append((char)(TAG_QUOTE_CHARS << 8 | 1));
+compiledCode.append(ch);
+}
+} else {
+encode(TAG_QUOTE_CHARS, len, compiledCode);
+compiledCode.append(tmpBuffer);
+}
+inQuote = false;
+}
+continue;
+}
+if (inQuote) {
+tmpBuffer.append(c);
+continue;
+}
+if (!(c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')) {
+if (count != 0) {
+encode(lastTag, count, compiledCode);
+tagcount++;
+prevTag = lastTag;
+lastTag = -1;
+count = 0;
+}
+if (c < 128) {
+// In most cases, c would be a delimiter, such as ':'.
+compiledCode.append((char)(TAG_QUOTE_ASCII_CHAR << 8 | c));
+} else {
+// Take any contiguous non-ASCII alphabet characters and
+// put them in a single TAG_QUOTE_CHARS.
+int j;
+for (j = i + 1; j < length; j++) {
+char d = pattern.charAt(j);
+if (d == '\'' || (d >= 'a' && d <= 'z' || d >= 'A' && d <= 'Z')) {
+break;
+}
+}
+compiledCode.append((char)(TAG_QUOTE_CHARS << 8 | (j - i)));
+for (; i < j; i++) {
+compiledCode.append(pattern.charAt(i));
+}
+i--;
+}
+continue;
+}
+int tag;
+if ((tag = DateFormatSymbols.patternChars.indexOf(c)) == -1) {
+throw new IllegalArgumentException("Illegal pattern character " +
+"'" + c + "'");
+}
+if (lastTag == -1 || lastTag == tag) {
+lastTag = tag;
+count++;
+continue;
+}
+encode(lastTag, count, compiledCode);
+tagcount++;
+prevTag = lastTag;
+lastTag = tag;
+count = 1;
+}
+if (inQuote) {
+throw new IllegalArgumentException("Unterminated quote");
+}
+if (count != 0) {
+encode(lastTag, count, compiledCode);
+tagcount++;
+prevTag = lastTag;
+}
+forceStandaloneForm = (tagcount == 1 && prevTag == PATTERN_MONTH);
+// Copy the compiled pattern to a char array
+int len = compiledCode.length();
+char[] r = new char[len];
+compiledCode.getChars(0, len, r, 0);
+return r;
+}
+/**
+* Encodes the given tag and length and puts encoded char(s) into buffer.
+*/
+private static void encode(int tag, int length, StringBuilder buffer) {
+if (tag == PATTERN_ISO_ZONE && length >= 4) {
+throw new IllegalArgumentException("invalid ISO 8601 format: length=" + length);
+}
+if (length < 255) {
+buffer.append((char)(tag << 8 | length));
+} else {
+buffer.append((char)((tag << 8) | 0xff));
+buffer.append((char)(length >>> 16));
+buffer.append((char)(length & 0xffff));
+}
+}
+/* Initialize the fields we use to disambiguate ambiguous years. Separate
+* so we can call it from readObject().
+*/
+private void initializeDefaultCentury() {
+calendar.setTimeInMillis(System.currentTimeMillis());
+calendar.add( Calendar.YEAR, -80 );
+parseAmbiguousDatesAsAfter(calendar.getTime());
+}
+/* Define one-century window into which to disambiguate dates using
+* two-digit years.
+*/
+private void parseAmbiguousDatesAsAfter(Date startDate) {
+defaultCenturyStart = startDate;
+calendar.setTime(startDate);
+defaultCenturyStartYear = calendar.get(Calendar.YEAR);
+}
+/**
+* Sets the 100-year period 2-digit years will be interpreted as being in
+* to begin on the date the user specifies.
+*
+* @param startDate During parsing, two digit years will be placed in the range
+* <code>startDate</code> to <code>startDate + 100 years</code>.
+* @see #get2DigitYearStart
+* @throws NullPointerException if {@code startDate} is {@code null}.
+* @since 1.2
+*/
+public void set2DigitYearStart(Date startDate) {
+parseAmbiguousDatesAsAfter(new Date(startDate.getTime()));
+}
+/**
+* Returns the beginning date of the 100-year period 2-digit years are interpreted
+* as being within.
+*
+* @return the start of the 100-year period into which two digit years are
+* parsed
+* @see #set2DigitYearStart
+* @since 1.2
+*/
+public Date get2DigitYearStart() {
+return (Date) defaultCenturyStart.clone();
+}
+/**
+* Formats the given <code>Date</code> into a date/time string and appends
+* the result to the given <code>StringBuffer</code>.
+*
+* @param date the date-time value to be formatted into a date-time string.
+* @param toAppendTo where the new date-time text is to be appended.
+* @param pos the formatting position. On input: an alignment field,
+* if desired. On output: the offsets of the alignment field.
+* @return the formatted date-time string.
+* @exception NullPointerException if any of the parameters is {@code null}.
+*/
+@Override
+public StringBuffer format(Date date, StringBuffer toAppendTo,
+FieldPosition pos)
+{
+pos.beginIndex = pos.endIndex = 0;
+return format(date, toAppendTo, pos.getFieldDelegate());
+}
+// Called from Format after creating a FieldDelegate
+private StringBuffer format(Date date, StringBuffer toAppendTo,
+FieldDelegate delegate) {
+// Convert input date to time field list
+calendar.setTime(date);
+boolean useDateFormatSymbols = useDateFormatSymbols();
+for (int i = 0; i < compiledPattern.length; ) {
+int tag = compiledPattern[i] >>> 8;
+int count = compiledPattern[i++] & 0xff;
+if (count == 255) {
+count = compiledPattern[i++] << 16;
+count |= compiledPattern[i++];
+}
+switch (tag) {
+case TAG_QUOTE_ASCII_CHAR:
+toAppendTo.append((char)count);
+break;
+case TAG_QUOTE_CHARS:
+toAppendTo.append(compiledPattern, i, count);
+i += count;
+break;
+default:
+subFormat(tag, count, delegate, toAppendTo, useDateFormatSymbols);
+break;
+}
+}
+return toAppendTo;
+}
+/**
+* Formats an Object producing an <code>AttributedCharacterIterator</code>.
+* You can use the returned <code>AttributedCharacterIterator</code>
+* to build the resulting String, as well as to determine information
+* about the resulting String.
+* <p>
+* Each attribute key of the AttributedCharacterIterator will be of type
+* <code>DateFormat.Field</code>, with the corresponding attribute value
+* being the same as the attribute key.
+*
+* @exception NullPointerException if obj is null.
+* @exception IllegalArgumentException if the Format cannot format the
+*            given object, or if the Format's pattern string is invalid.
+* @param obj The object to format
+* @return AttributedCharacterIterator describing the formatted value.
+* @since 1.4
+*/
+@Override
+public AttributedCharacterIterator formatToCharacterIterator(Object obj) {
+StringBuffer sb = new StringBuffer();
+CharacterIteratorFieldDelegate delegate = new
+CharacterIteratorFieldDelegate();
+if (obj instanceof Date) {
+format((Date)obj, sb, delegate);
+}
+else if (obj instanceof Number) {
+format(new Date(((Number)obj).longValue()), sb, delegate);
+}
+else if (obj == null) {
+throw new NullPointerException(
+"formatToCharacterIterator must be passed non-null object");
+}
+else {
+throw new IllegalArgumentException(
+"Cannot format given Object as a Date");
+}
+return delegate.getIterator(sb.toString());
+}
+// Map index into pattern character string to Calendar field number
+private static final int[] PATTERN_INDEX_TO_CALENDAR_FIELD = {
+Calendar.ERA,
+Calendar.YEAR,
+Calendar.MONTH,
+Calendar.DATE,
+Calendar.HOUR_OF_DAY,
+Calendar.HOUR_OF_DAY,
+Calendar.MINUTE,
+Calendar.SECOND,
+Calendar.MILLISECOND,
+Calendar.DAY_OF_WEEK,
+Calendar.DAY_OF_YEAR,
+Calendar.DAY_OF_WEEK_IN_MONTH,
+Calendar.WEEK_OF_YEAR,
+Calendar.WEEK_OF_MONTH,
+Calendar.AM_PM,
+Calendar.HOUR,
+Calendar.HOUR,
+Calendar.ZONE_OFFSET,
+Calendar.ZONE_OFFSET,
+CalendarBuilder.WEEK_YEAR,         // Pseudo Calendar field
+CalendarBuilder.ISO_DAY_OF_WEEK,   // Pseudo Calendar field
+Calendar.ZONE_OFFSET,
+Calendar.MONTH
+};
+// Map index into pattern character string to DateFormat field number
+private static final int[] PATTERN_INDEX_TO_DATE_FORMAT_FIELD = {
+DateFormat.ERA_FIELD,
+DateFormat.YEAR_FIELD,
+DateFormat.MONTH_FIELD,
+DateFormat.DATE_FIELD,
+DateFormat.HOUR_OF_DAY1_FIELD,
+DateFormat.HOUR_OF_DAY0_FIELD,
+DateFormat.MINUTE_FIELD,
+DateFormat.SECOND_FIELD,
+DateFormat.MILLISECOND_FIELD,
+DateFormat.DAY_OF_WEEK_FIELD,
+DateFormat.DAY_OF_YEAR_FIELD,
+DateFormat.DAY_OF_WEEK_IN_MONTH_FIELD,
+DateFormat.WEEK_OF_YEAR_FIELD,
+DateFormat.WEEK_OF_MONTH_FIELD,
+DateFormat.AM_PM_FIELD,
+DateFormat.HOUR1_FIELD,
+DateFormat.HOUR0_FIELD,
+DateFormat.TIMEZONE_FIELD,
+DateFormat.TIMEZONE_FIELD,
+DateFormat.YEAR_FIELD,
+DateFormat.DAY_OF_WEEK_FIELD,
+DateFormat.TIMEZONE_FIELD,
+DateFormat.MONTH_FIELD
+};
+// Maps from DecimalFormatSymbols index to Field constant
+private static final Field[] PATTERN_INDEX_TO_DATE_FORMAT_FIELD_ID = {
+Field.ERA,
+Field.YEAR,
+Field.MONTH,
+Field.DAY_OF_MONTH,
+Field.HOUR_OF_DAY1,
+Field.HOUR_OF_DAY0,
+Field.MINUTE,
+Field.SECOND,
+Field.MILLISECOND,
+Field.DAY_OF_WEEK,
+Field.DAY_OF_YEAR,
+Field.DAY_OF_WEEK_IN_MONTH,
+Field.WEEK_OF_YEAR,
+Field.WEEK_OF_MONTH,
+Field.AM_PM,
+Field.HOUR1,
+Field.HOUR0,
+Field.TIME_ZONE,
+Field.TIME_ZONE,
+Field.YEAR,
+Field.DAY_OF_WEEK,
+Field.TIME_ZONE,
+Field.MONTH
+};
+/**
+* Private member function that does the real date/time formatting.
+*/
+private void subFormat(int patternCharIndex, int count,
+FieldDelegate delegate, StringBuffer buffer,
+boolean useDateFormatSymbols)
+{
+int     maxIntCount = Integer.MAX_VALUE;
+String  current = null;
+int     beginOffset = buffer.length();
+int field = PATTERN_INDEX_TO_CALENDAR_FIELD[patternCharIndex];
+int value;
+if (field == CalendarBuilder.WEEK_YEAR) {
+if (calendar.isWeekDateSupported()) {
+value = calendar.getWeekYear();
+} else {
+// use calendar year 'y' instead
+patternCharIndex = PATTERN_YEAR;
+field = PATTERN_INDEX_TO_CALENDAR_FIELD[patternCharIndex];
+value = calendar.get(field);
+}
+} else if (field == CalendarBuilder.ISO_DAY_OF_WEEK) {
+value = CalendarBuilder.toISODayOfWeek(calendar.get(Calendar.DAY_OF_WEEK));
+} else {
+value = calendar.get(field);
+}
+int style = (count >= 4) ? Calendar.LONG : Calendar.SHORT;
+if (!useDateFormatSymbols && field < Calendar.ZONE_OFFSET
+&& patternCharIndex != PATTERN_MONTH_STANDALONE) {
+current = calendar.getDisplayName(field, style, locale);
+}
+// Note: zeroPaddingNumber() assumes that maxDigits is either
+// 2 or maxIntCount. If we make any changes to this,
+// zeroPaddingNumber() must be fixed.
+switch (patternCharIndex) {
+case PATTERN_ERA: // 'G'
+if (useDateFormatSymbols) {
+String[] eras = formatData.getEras();
+if (value < eras.length) {
+current = eras[value];
+}
+}
+if (current == null) {
+current = "";
+}
+break;
+case PATTERN_WEEK_YEAR: // 'Y'
+case PATTERN_YEAR:      // 'y'
+if (calendar instanceof GregorianCalendar) {
+if (count != 2) {
+zeroPaddingNumber(value, count, maxIntCount, buffer);
+} else {
+zeroPaddingNumber(value, 2, 2, buffer);
+} // clip 1996 to 96
+} else {
+if (current == null) {
+zeroPaddingNumber(value, style == Calendar.LONG ? 1 : count,
+maxIntCount, buffer);
+}
+}
+break;
+case PATTERN_MONTH:            // 'M' (context seinsive)
+if (useDateFormatSymbols) {
+String[] months;
+if (count >= 4) {
+months = formatData.getMonths();
+current = months[value];
+} else if (count == 3) {
+months = formatData.getShortMonths();
+current = months[value];
+}
+} else {
+if (count < 3) {
+current = null;
+} else if (forceStandaloneForm) {
+current = calendar.getDisplayName(field, style | 0x8000, locale);
+if (current == null) {
+current = calendar.getDisplayName(field, style, locale);
+}
+}
+}
+if (current == null) {
+zeroPaddingNumber(value+1, count, maxIntCount, buffer);
+}
+break;
+case PATTERN_MONTH_STANDALONE: // 'L'
+assert current == null;
+if (locale == null) {
+String[] months;
+if (count >= 4) {
+months = formatData.getMonths();
+current = months[value];
+} else if (count == 3) {
+months = formatData.getShortMonths();
+current = months[value];
+}
+} else {
+if (count >= 3) {
+current = calendar.getDisplayName(field, style | 0x8000, locale);
+}
+}
+if (current == null) {
+zeroPaddingNumber(value+1, count, maxIntCount, buffer);
+}
+break;
+case PATTERN_HOUR_OF_DAY1: // 'k' 1-based.  eg, 23:59 + 1 hour =>> 24:59
+if (current == null) {
+if (value == 0) {
+zeroPaddingNumber(calendar.getMaximum(Calendar.HOUR_OF_DAY) + 1,
+count, maxIntCount, buffer);
+} else {
+zeroPaddingNumber(value, count, maxIntCount, buffer);
+}
+}
+break;
+case PATTERN_DAY_OF_WEEK: // 'E'
+if (useDateFormatSymbols) {
+String[] weekdays;
+if (count >= 4) {
+weekdays = formatData.getWeekdays();
+current = weekdays[value];
+} else { // count < 4, use abbreviated form if exists
+weekdays = formatData.getShortWeekdays();
+current = weekdays[value];
+}
+}
+break;
+case PATTERN_AM_PM:    // 'a'
+if (useDateFormatSymbols) {
+String[] ampm = formatData.getAmPmStrings();
+current = ampm[value];
+}
+break;
+case PATTERN_HOUR1:    // 'h' 1-based.  eg, 11PM + 1 hour =>> 12 AM
+if (current == null) {
+if (value == 0) {
+zeroPaddingNumber(calendar.getLeastMaximum(Calendar.HOUR) + 1,
+count, maxIntCount, buffer);
+} else {
+zeroPaddingNumber(value, count, maxIntCount, buffer);
+}
+}
+break;
+case PATTERN_ZONE_NAME: // 'z'
+if (current == null) {
+if (formatData.locale == null || formatData.isZoneStringsSet) {
+int zoneIndex =
+formatData.getZoneIndex(calendar.getTimeZone().getID());
+if (zoneIndex == -1) {
+value = calendar.get(Calendar.ZONE_OFFSET) +
+calendar.get(Calendar.DST_OFFSET);
+buffer.append(ZoneInfoFile.toCustomID(value));
+} else {
+int index = (calendar.get(Calendar.DST_OFFSET) == 0) ? 1: 3;
+if (count < 4) {
+// Use the short name
+index++;
+}
+String[][] zoneStrings = formatData.getZoneStringsWrapper();
+buffer.append(zoneStrings[zoneIndex][index]);
+}
+} else {
+TimeZone tz = calendar.getTimeZone();
+boolean daylight = (calendar.get(Calendar.DST_OFFSET) != 0);
+int tzstyle = (count < 4 ? TimeZone.SHORT : TimeZone.LONG);
+buffer.append(tz.getDisplayName(daylight, tzstyle, formatData.locale));
+}
+}
+break;
+case PATTERN_ZONE_VALUE: // 'Z' ("-/+hhmm" form)
+value = (calendar.get(Calendar.ZONE_OFFSET) +
+calendar.get(Calendar.DST_OFFSET)) / 60000;
+int width = 4;
+if (value >= 0) {
+buffer.append('+');
+} else {
+width++;
+}
+int num = (value / 60) * 100 + (value % 60);
+CalendarUtils.sprintf0d(buffer, num, width);
+break;
+case PATTERN_ISO_ZONE:   // 'X'
+value = calendar.get(Calendar.ZONE_OFFSET)
++ calendar.get(Calendar.DST_OFFSET);
+if (value == 0) {
+buffer.append('Z');
+break;
+}
+value /=  60000;
+if (value >= 0) {
+buffer.append('+');
+} else {
+buffer.append('-');
+value = -value;
+}
+CalendarUtils.sprintf0d(buffer, value / 60, 2);
+if (count == 1) {
+break;
+}
+if (count == 3) {
+buffer.append(':');
+}
+CalendarUtils.sprintf0d(buffer, value % 60, 2);
+break;
+default:
+// case PATTERN_DAY_OF_MONTH:         // 'd'
+// case PATTERN_HOUR_OF_DAY0:         // 'H' 0-based.  eg, 23:59 + 1 hour =>> 00:59
+// case PATTERN_MINUTE:               // 'm'
+// case PATTERN_SECOND:               // 's'
+// case PATTERN_MILLISECOND:          // 'S'
+// case PATTERN_DAY_OF_YEAR:          // 'D'
+// case PATTERN_DAY_OF_WEEK_IN_MONTH: // 'F'
+// case PATTERN_WEEK_OF_YEAR:         // 'w'
+// case PATTERN_WEEK_OF_MONTH:        // 'W'
+// case PATTERN_HOUR0:                // 'K' eg, 11PM + 1 hour =>> 0 AM
+// case PATTERN_ISO_DAY_OF_WEEK:      // 'u' pseudo field, Monday = 1, ..., Sunday = 7
+if (current == null) {
+zeroPaddingNumber(value, count, maxIntCount, buffer);
+}
+break;
+} // switch (patternCharIndex)
+if (current != null) {
+buffer.append(current);
+}
+int fieldID = PATTERN_INDEX_TO_DATE_FORMAT_FIELD[patternCharIndex];
+Field f = PATTERN_INDEX_TO_DATE_FORMAT_FIELD_ID[patternCharIndex];
+delegate.formatted(fieldID, f, f, beginOffset, buffer.length(), buffer);
+}
+/**
+* Formats a number with the specified minimum and maximum number of digits.
+*/
+private void zeroPaddingNumber(int value, int minDigits, int maxDigits, StringBuffer buffer)
+{
+// Optimization for 1, 2 and 4 digit numbers. This should
+// cover most cases of formatting date/time related items.
+// Note: This optimization code assumes that maxDigits is
+// either 2 or Integer.MAX_VALUE (maxIntCount in format()).
+try {
+if (zeroDigit == 0) {
+zeroDigit = ((DecimalFormat)numberFormat).getDecimalFormatSymbols().getZeroDigit();
+}
+if (value >= 0) {
+if (value < 100 && minDigits >= 1 && minDigits <= 2) {
+if (value < 10) {
+if (minDigits == 2) {
+buffer.append(zeroDigit);
+}
+buffer.append((char)(zeroDigit + value));
+} else {
+buffer.append((char)(zeroDigit + value / 10));
+buffer.append((char)(zeroDigit + value % 10));
+}
+return;
+} else if (value >= 1000 && value < 10000) {
+if (minDigits == 4) {
+buffer.append((char)(zeroDigit + value / 1000));
+value %= 1000;
+buffer.append((char)(zeroDigit + value / 100));
+value %= 100;
+buffer.append((char)(zeroDigit + value / 10));
+buffer.append((char)(zeroDigit + value % 10));
+return;
+}
+if (minDigits == 2 && maxDigits == 2) {
+zeroPaddingNumber(value % 100, 2, 2, buffer);
+return;
+}
+}
+}
+} catch (Exception e) {
+}
+numberFormat.setMinimumIntegerDigits(minDigits);
+numberFormat.setMaximumIntegerDigits(maxDigits);
+numberFormat.format((long)value, buffer, DontCareFieldPosition.INSTANCE);
+}
+/**
+* Parses text from a string to produce a <code>Date</code>.
+* <p>
+* The method attempts to parse text starting at the index given by
+* <code>pos</code>.
+* If parsing succeeds, then the index of <code>pos</code> is updated
+* to the index after the last character used (parsing does not necessarily
+* use all characters up to the end of the string), and the parsed
+* date is returned. The updated <code>pos</code> can be used to
+* indicate the starting point for the next call to this method.
+* If an error occurs, then the index of <code>pos</code> is not
+* changed, the error index of <code>pos</code> is set to the index of
+* the character where the error occurred, and null is returned.
+*
+* <p>This parsing operation uses the {@link DateFormat#calendar
+* calendar} to produce a {@code Date}. All of the {@code
+* calendar}'s date-time fields are {@linkplain Calendar#clear()
+* cleared} before parsing, and the {@code calendar}'s default
+* values of the date-time fields are used for any missing
+* date-time information. For example, the year value of the
+* parsed {@code Date} is 1970 with {@link GregorianCalendar} if
+* no year value is given from the parsing operation.  The {@code
+* TimeZone} value may be overwritten, depending on the given
+* pattern and the time zone value in {@code text}. Any {@code
+* TimeZone} value that has previously been set by a call to
+* {@link #setTimeZone(java.util.TimeZone) setTimeZone} may need
+* to be restored for further operations.
+*
+* @param text  A <code>String</code>, part of which should be parsed.
+* @param pos   A <code>ParsePosition</code> object with index and error
+*              index information as described above.
+* @return A <code>Date</code> parsed from the string. In case of
+*         error, returns null.
+* @exception NullPointerException if <code>text</code> or <code>pos</code> is null.
+*/
+@Override
+public Date parse(String text, ParsePosition pos)
+{
+checkNegativeNumberExpression();
+int start = pos.index;
+int oldStart = start;
+int textLength = text.length();
+boolean[] ambiguousYear = {false};
+CalendarBuilder calb = new CalendarBuilder();
+for (int i = 0; i < compiledPattern.length; ) {
+int tag = compiledPattern[i] >>> 8;
+int count = compiledPattern[i++] & 0xff;
+if (count == 255) {
+count = compiledPattern[i++] << 16;
+count |= compiledPattern[i++];
+}
+switch (tag) {
+case TAG_QUOTE_ASCII_CHAR:
+if (start >= textLength || text.charAt(start) != (char)count) {
+pos.index = oldStart;
+pos.errorIndex = start;
+return null;
+}
+start++;
+break;
+case TAG_QUOTE_CHARS:
+while (count-- > 0) {
+if (start >= textLength || text.charAt(start) != compiledPattern[i++]) {
+pos.index = oldStart;
+pos.errorIndex = start;
+return null;
+}
+start++;
+}
+break;
+default:
+// Peek the next pattern to determine if we need to
+// obey the number of pattern letters for
+// parsing. It's required when parsing contiguous
+// digit text (e.g., "20010704") with a pattern which
+// has no delimiters between fields, like "yyyyMMdd".
+boolean obeyCount = false;
+// In Arabic, a minus sign for a negative number is put after
+// the number. Even in another locale, a minus sign can be
+// put after a number using DateFormat.setNumberFormat().
+// If both the minus sign and the field-delimiter are '-',
+// subParse() needs to determine whether a '-' after a number
+// in the given text is a delimiter or is a minus sign for the
+// preceding number. We give subParse() a clue based on the
+// information in compiledPattern.
+boolean useFollowingMinusSignAsDelimiter = false;
+if (i < compiledPattern.length) {
+int nextTag = compiledPattern[i] >>> 8;
+int nextCount = compiledPattern[i] & 0xff;
+obeyCount = shouldObeyCount(nextTag, nextCount);
+if (hasFollowingMinusSign &&
+(nextTag == TAG_QUOTE_ASCII_CHAR ||
+nextTag == TAG_QUOTE_CHARS)) {
+if (nextTag != TAG_QUOTE_ASCII_CHAR) {
+nextCount = compiledPattern[i+1];
+}
+if (nextCount == minusSign) {
+useFollowingMinusSignAsDelimiter = true;
+}
+}
+}
+start = subParse(text, start, tag, count, obeyCount,
+ambiguousYear, pos,
+useFollowingMinusSignAsDelimiter, calb);
+if (start < 0) {
+pos.index = oldStart;
+return null;
+}
+}
+}
+// At this point the fields of Calendar have been set.  Calendar
+// will fill in default values for missing fields when the time
+// is computed.
+pos.index = start;
+Date parsedDate;
+try {
+parsedDate = calb.establish(calendar).getTime();
+// If the year value is ambiguous,
+// then the two-digit year == the default start year
+if (ambiguousYear[0]) {
+if (parsedDate.before(defaultCenturyStart)) {
+parsedDate = calb.addYear(100).establish(calendar).getTime();
+}
+}
+}
+// An IllegalArgumentException will be thrown by Calendar.getTime()
+// if any fields are out of range, e.g., MONTH == 17.
+catch (IllegalArgumentException e) {
+pos.errorIndex = start;
+pos.index = oldStart;
+return null;
+}
+return parsedDate;
+}
+/* If the next tag/pattern is a <Numeric_Field> then the parser
+* should consider the count of digits while parsing the contigous digits
+* for the current tag/pattern
+*/
+private boolean shouldObeyCount(int tag, int count) {
+switch (tag) {
+case PATTERN_MONTH:
+case PATTERN_MONTH_STANDALONE:
+return count <= 2;
+case PATTERN_YEAR:
+case PATTERN_DAY_OF_MONTH:
+case PATTERN_HOUR_OF_DAY1:
+case PATTERN_HOUR_OF_DAY0:
+case PATTERN_MINUTE:
+case PATTERN_SECOND:
+case PATTERN_MILLISECOND:
+case PATTERN_DAY_OF_YEAR:
+case PATTERN_DAY_OF_WEEK_IN_MONTH:
+case PATTERN_WEEK_OF_YEAR:
+case PATTERN_WEEK_OF_MONTH:
+case PATTERN_HOUR1:
+case PATTERN_HOUR0:
+case PATTERN_WEEK_YEAR:
+case PATTERN_ISO_DAY_OF_WEEK:
+return true;
+default:
+return false;
+}
+}
+/**
+* Private code-size reduction function used by subParse.
+* @param text the time text being parsed.
+* @param start where to start parsing.
+* @param field the date field being parsed.
+* @param data the string array to parsed.
+* @return the new start position if matching succeeded; a negative number
+* indicating matching failure, otherwise.
+*/
+private int matchString(String text, int start, int field, String[] data, CalendarBuilder calb)
+{
+int i = 0;
+int count = data.length;
+if (field == Calendar.DAY_OF_WEEK) {
+i = 1;
+}
+// There may be multiple strings in the data[] array which begin with
+// the same prefix (e.g., Cerven and Cervenec (June and July) in Czech).
+// We keep track of the longest match, and return that.  Note that this
+// unfortunately requires us to test all array elements.
+int bestMatchLength = 0, bestMatch = -1;
+for (; i<count; ++i)
+{
+int length = data[i].length();
+// Always compare if we have no match yet; otherwise only compare
+// against potentially better matches (longer strings).
+if (length > bestMatchLength &&
+text.regionMatches(true, start, data[i], 0, length))
+{
+bestMatch = i;
+bestMatchLength = length;
+}
+}
+if (bestMatch >= 0)
+{
+calb.set(field, bestMatch);
+return start + bestMatchLength;
+}
+return -start;
+}
+/**
+* Performs the same thing as matchString(String, int, int,
+* String[]). This method takes a Map<String, Integer> instead of
+* String[].
+*/
+private int matchString(String text, int start, int field,
+Map<String,Integer> data, CalendarBuilder calb) {
+if (data != null) {
+// TODO: make this default when it's in the spec.
+if (data instanceof SortedMap) {
+for (String name : data.keySet()) {
+if (text.regionMatches(true, start, name, 0, name.length())) {
+calb.set(field, data.get(name));
+return start + name.length();
+}
+}
+return -start;
+}
+String bestMatch = null;
+for (String name : data.keySet()) {
+int length = name.length();
+if (bestMatch == null || length > bestMatch.length()) {
+if (text.regionMatches(true, start, name, 0, length)) {
+bestMatch = name;
+}
+}
+}
+if (bestMatch != null) {
+calb.set(field, data.get(bestMatch));
+return start + bestMatch.length();
+}
+}
+return -start;
+}
+private int matchZoneString(String text, int start, String[] zoneNames) {
+for (int i = 1; i <= 4; ++i) {
+// Checking long and short zones [1 & 2],
+// and long and short daylight [3 & 4].
+String zoneName = zoneNames[i];
+if (text.regionMatches(true, start,
+zoneName, 0, zoneName.length())) {
+return i;
+}
+}
+return -1;
+}
+private boolean matchDSTString(String text, int start, int zoneIndex, int standardIndex,
+String[][] zoneStrings) {
+int index = standardIndex + 2;
+String zoneName  = zoneStrings[zoneIndex][index];
+if (text.regionMatches(true, start,
+zoneName, 0, zoneName.length())) {
+return true;
+}
+return false;
+}
+/**
+* find time zone 'text' matched zoneStrings and set to internal
+* calendar.
+*/
+private int subParseZoneString(String text, int start, CalendarBuilder calb) {
+boolean useSameName = false; // true if standard and daylight time use the same abbreviation.
+TimeZone currentTimeZone = getTimeZone();
+// At this point, check for named time zones by looking through
+// the locale data from the TimeZoneNames strings.
+// Want to be able to parse both short and long forms.
+int zoneIndex = formatData.getZoneIndex(currentTimeZone.getID());
+TimeZone tz = null;
+String[][] zoneStrings = formatData.getZoneStringsWrapper();
+String[] zoneNames = null;
+int nameIndex = 0;
+if (zoneIndex != -1) {
+zoneNames = zoneStrings[zoneIndex];
+if ((nameIndex = matchZoneString(text, start, zoneNames)) > 0) {
+if (nameIndex <= 2) {
+// Check if the standard name (abbr) and the daylight name are the same.
+useSameName = zoneNames[nameIndex].equalsIgnoreCase(zoneNames[nameIndex + 2]);
+}
+tz = TimeZone.getTimeZone(zoneNames[0]);
+}
+}
+if (tz == null) {
+zoneIndex = formatData.getZoneIndex(TimeZone.getDefault().getID());
+if (zoneIndex != -1) {
+zoneNames = zoneStrings[zoneIndex];
+if ((nameIndex = matchZoneString(text, start, zoneNames)) > 0) {
+if (nameIndex <= 2) {
+useSameName = zoneNames[nameIndex].equalsIgnoreCase(zoneNames[nameIndex + 2]);
+}
+tz = TimeZone.getTimeZone(zoneNames[0]);
+}
+}
+}
+if (tz == null) {
+int len = zoneStrings.length;
+for (int i = 0; i < len; i++) {
+zoneNames = zoneStrings[i];
+if ((nameIndex = matchZoneString(text, start, zoneNames)) > 0) {
+if (nameIndex <= 2) {
+useSameName = zoneNames[nameIndex].equalsIgnoreCase(zoneNames[nameIndex + 2]);
+}
+tz = TimeZone.getTimeZone(zoneNames[0]);
+break;
+}
+}
+}
+if (tz != null) { // Matched any ?
+if (!tz.equals(currentTimeZone)) {
+setTimeZone(tz);
+}
+// If the time zone matched uses the same name
+// (abbreviation) for both standard and daylight time,
+// let the time zone in the Calendar decide which one.
+//
+// Also if tz.getDSTSaving() returns 0 for DST, use tz to
+// determine the local time. (6645292)
+int dstAmount = (nameIndex >= 3) ? tz.getDSTSavings() : 0;
+if (!(useSameName || (nameIndex >= 3 && dstAmount == 0))) {
+calb.clear(Calendar.ZONE_OFFSET).set(Calendar.DST_OFFSET, dstAmount);
+}
+return (start + zoneNames[nameIndex].length());
+}
+return -start;
+}
+/**
+* Parses numeric forms of time zone offset, such as "hh:mm", and
+* sets calb to the parsed value.
+*
+* @param text  the text to be parsed
+* @param start the character position to start parsing
+* @param sign  1: positive; -1: negative
+* @param count 0: 'Z' or "GMT+hh:mm" parsing; 1 - 3: the number of 'X's
+* @param colon true - colon required between hh and mm; false - no colon required
+* @param calb  a CalendarBuilder in which the parsed value is stored
+* @return updated parsed position, or its negative value to indicate a parsing error
+*/
+private int subParseNumericZone(String text, int start, int sign, int count,
+boolean colon, CalendarBuilder calb) {
+int index = start;
+parse:
+try {
+char c = text.charAt(index++);
+// Parse hh
+int hours;
+if (!isDigit(c)) {
+break parse;
+}
+hours = c - '0';
+c = text.charAt(index++);
+if (isDigit(c)) {
+hours = hours * 10 + (c - '0');
+} else {
+// If no colon in RFC 822 or 'X' (ISO), two digits are
+// required.
+if (count > 0 || !colon) {
+break parse;
+}
+--index;
+}
+if (hours > 23) {
+break parse;
+}
+int minutes = 0;
+if (count != 1) {
+// Proceed with parsing mm
+c = text.charAt(index++);
+if (colon) {
+if (c != ':') {
+break parse;
+}
+c = text.charAt(index++);
+}
+if (!isDigit(c)) {
+break parse;
+}
+minutes = c - '0';
+c = text.charAt(index++);
+if (!isDigit(c)) {
+break parse;
+}
+minutes = minutes * 10 + (c - '0');
+if (minutes > 59) {
+break parse;
+}
+}
+minutes += hours * 60;
+calb.set(Calendar.ZONE_OFFSET, minutes * MILLIS_PER_MINUTE * sign)
+.set(Calendar.DST_OFFSET, 0);
+return index;
+} catch (IndexOutOfBoundsException e) {
+}
+return  1 - index; // -(index - 1)
+}
+private boolean isDigit(char c) {
+return c >= '0' && c <= '9';
+}
+/**
+* Private member function that converts the parsed date strings into
+* timeFields. Returns -start (for ParsePosition) if failed.
+* @param text the time text to be parsed.
+* @param start where to start parsing.
+* @param patternCharIndex the index of the pattern character.
+* @param count the count of a pattern character.
+* @param obeyCount if true, then the next field directly abuts this one,
+* and we should use the count to know when to stop parsing.
+* @param ambiguousYear return parameter; upon return, if ambiguousYear[0]
+* is true, then a two-digit year was parsed and may need to be readjusted.
+* @param origPos origPos.errorIndex is used to return an error index
+* at which a parse error occurred, if matching failure occurs.
+* @return the new start position if matching succeeded; -1 indicating
+* matching failure, otherwise. In case matching failure occurred,
+* an error index is set to origPos.errorIndex.
+*/
+private int subParse(String text, int start, int patternCharIndex, int count,
+boolean obeyCount, boolean[] ambiguousYear,
+ParsePosition origPos,
+boolean useFollowingMinusSignAsDelimiter, CalendarBuilder calb) {
+Number number;
+int value = 0;
+ParsePosition pos = new ParsePosition(0);
+pos.index = start;
+if (patternCharIndex == PATTERN_WEEK_YEAR && !calendar.isWeekDateSupported()) {
+// use calendar year 'y' instead
+patternCharIndex = PATTERN_YEAR;
+}
+int field = PATTERN_INDEX_TO_CALENDAR_FIELD[patternCharIndex];
+// If there are any spaces here, skip over them.  If we hit the end
+// of the string, then fail.
+for (;;) {
+if (pos.index >= text.length()) {
+origPos.errorIndex = start;
+return -1;
+}
+char c = text.charAt(pos.index);
+if (c != ' ' && c != '\t') {
+break;
+}
+++pos.index;
+}
+// Remember the actual start index
+int actualStart = pos.index;
+parsing:
+{
+// We handle a few special cases here where we need to parse
+// a number value.  We handle further, more generic cases below.  We need
+// to handle some of them here because some fields require extra processing on
+// the parsed value.
+if (patternCharIndex == PATTERN_HOUR_OF_DAY1 ||
+patternCharIndex == PATTERN_HOUR1 ||
+(patternCharIndex == PATTERN_MONTH && count <= 2) ||
+(patternCharIndex == PATTERN_MONTH_STANDALONE && count <= 2) ||
+patternCharIndex == PATTERN_YEAR ||
+patternCharIndex == PATTERN_WEEK_YEAR) {
+// It would be good to unify this with the obeyCount logic below,
+// but that's going to be difficult.
+if (obeyCount) {
+if ((start+count) > text.length()) {
+break parsing;
+}
+number = numberFormat.parse(text.substring(0, start+count), pos);
+} else {
+number = numberFormat.parse(text, pos);
+}
+if (number == null) {
+if (patternCharIndex != PATTERN_YEAR || calendar instanceof GregorianCalendar) {
+break parsing;
+}
+} else {
+value = number.intValue();
+if (useFollowingMinusSignAsDelimiter && (value < 0) &&
+(((pos.index < text.length()) &&
+(text.charAt(pos.index) != minusSign)) ||
+((pos.index == text.length()) &&
+(text.charAt(pos.index-1) == minusSign)))) {
+value = -value;
+pos.index--;
+}
+}
+}
+boolean useDateFormatSymbols = useDateFormatSymbols();
+int index;
+switch (patternCharIndex) {
+case PATTERN_ERA: // 'G'
+if (useDateFormatSymbols) {
+if ((index = matchString(text, start, Calendar.ERA, formatData.getEras(), calb)) > 0) {
+return index;
+}
+} else {
+Map<String, Integer> map = getDisplayNamesMap(field, locale);
+if ((index = matchString(text, start, field, map, calb)) > 0) {
+return index;
+}
+}
+break parsing;
+case PATTERN_WEEK_YEAR: // 'Y'
+case PATTERN_YEAR:      // 'y'
+if (!(calendar instanceof GregorianCalendar)) {
+// calendar might have text representations for year values,
+// such as "\u5143" in JapaneseImperialCalendar.
+int style = (count >= 4) ? Calendar.LONG : Calendar.SHORT;
+Map<String, Integer> map = calendar.getDisplayNames(field, style, locale);
+if (map != null) {
+if ((index = matchString(text, start, field, map, calb)) > 0) {
+return index;
+}
+}
+calb.set(field, value);
+return pos.index;
+}
+// If there are 3 or more YEAR pattern characters, this indicates
+// that the year value is to be treated literally, without any
+// two-digit year adjustments (e.g., from "01" to 2001).  Otherwise
+// we made adjustments to place the 2-digit year in the proper
+// century, for parsed strings from "00" to "99".  Any other string
+// is treated literally:  "2250", "-1", "1", "002".
+if (count <= 2 && (pos.index - actualStart) == 2
+&& Character.isDigit(text.charAt(actualStart))
+&& Character.isDigit(text.charAt(actualStart + 1))) {
+// Assume for example that the defaultCenturyStart is 6/18/1903.
+// This means that two-digit years will be forced into the range
+// 6/18/1903 to 6/17/2003.  As a result, years 00, 01, and 02
+// correspond to 2000, 2001, and 2002.  Years 04, 05, etc. correspond
+// to 1904, 1905, etc.  If the year is 03, then it is 2003 if the
+// other fields specify a date before 6/18, or 1903 if they specify a
+// date afterwards.  As a result, 03 is an ambiguous year.  All other
+// two-digit years are unambiguous.
+int ambiguousTwoDigitYear = defaultCenturyStartYear % 100;
+ambiguousYear[0] = value == ambiguousTwoDigitYear;
+value += (defaultCenturyStartYear/100)*100 +
+(value < ambiguousTwoDigitYear ? 100 : 0);
+}
+calb.set(field, value);
+return pos.index;
+case PATTERN_MONTH: // 'M'
+if (count <= 2) // i.e., M or MM.
+{
+// Don't want to parse the month if it is a string
+// while pattern uses numeric style: M or MM.
+// [We computed 'value' above.]
+calb.set(Calendar.MONTH, value - 1);
+return pos.index;
+}
+if (useDateFormatSymbols) {
+// count >= 3 // i.e., MMM or MMMM
+// Want to be able to parse both short and long forms.
+// Try count == 4 first:
+int newStart;
+if ((newStart = matchString(text, start, Calendar.MONTH,
+formatData.getMonths(), calb)) > 0) {
+return newStart;
+}
+// count == 4 failed, now try count == 3
+if ((index = matchString(text, start, Calendar.MONTH,
+formatData.getShortMonths(), calb)) > 0) {
+return index;
+}
+} else {
+Map<String, Integer> map = getDisplayNamesMap(field, locale);
+if ((index = matchString(text, start, field, map, calb)) > 0) {
+return index;
+}
+}
+break parsing;
+case PATTERN_MONTH_STANDALONE: // 'L'
+if (count <= 2) {
+// Don't want to parse the month if it is a string
+// while pattern uses numeric style: L or LL
+//[we computed 'value' above.]
+calb.set(Calendar.MONTH, value - 1);
+return pos.index;
+}
+Map<String, Integer> maps = getDisplayNamesMap(field, locale);
+if ((index = matchString(text, start, field, maps, calb)) > 0) {
+return index;
+}
+break parsing;
+case PATTERN_HOUR_OF_DAY1: // 'k' 1-based.  eg, 23:59 + 1 hour =>> 24:59
+if (!isLenient()) {
+// Validate the hour value in non-lenient
+if (value < 1 || value > 24) {
+break parsing;
+}
+}
+// [We computed 'value' above.]
+if (value == calendar.getMaximum(Calendar.HOUR_OF_DAY) + 1) {
+value = 0;
+}
+calb.set(Calendar.HOUR_OF_DAY, value);
+return pos.index;
+case PATTERN_DAY_OF_WEEK:  // 'E'
+{
+if (useDateFormatSymbols) {
+// Want to be able to parse both short and long forms.
+// Try count == 4 (DDDD) first:
+int newStart;
+if ((newStart=matchString(text, start, Calendar.DAY_OF_WEEK,
+formatData.getWeekdays(), calb)) > 0) {
+return newStart;
+}
+// DDDD failed, now try DDD
+if ((index = matchString(text, start, Calendar.DAY_OF_WEEK,
+formatData.getShortWeekdays(), calb)) > 0) {
+return index;
+}
+} else {
+int[] styles = { Calendar.LONG, Calendar.SHORT };
+for (int style : styles) {
+Map<String,Integer> map = calendar.getDisplayNames(field, style, locale);
+if ((index = matchString(text, start, field, map, calb)) > 0) {
+return index;
+}
+}
+}
+}
+break parsing;
+case PATTERN_AM_PM:    // 'a'
+if (useDateFormatSymbols) {
+if ((index = matchString(text, start, Calendar.AM_PM,
+formatData.getAmPmStrings(), calb)) > 0) {
+return index;
+}
+} else {
+Map<String,Integer> map = getDisplayNamesMap(field, locale);
+if ((index = matchString(text, start, field, map, calb)) > 0) {
+return index;
+}
+}
+break parsing;
+case PATTERN_HOUR1: // 'h' 1-based.  eg, 11PM + 1 hour =>> 12 AM
+if (!isLenient()) {
+// Validate the hour value in non-lenient
+if (value < 1 || value > 12) {
+break parsing;
+}
+}
+// [We computed 'value' above.]
+if (value == calendar.getLeastMaximum(Calendar.HOUR) + 1) {
+value = 0;
+}
+calb.set(Calendar.HOUR, value);
+return pos.index;
+case PATTERN_ZONE_NAME:  // 'z'
+case PATTERN_ZONE_VALUE: // 'Z'
+{
+int sign = 0;
+try {
+char c = text.charAt(pos.index);
+if (c == '+') {
+sign = 1;
+} else if (c == '-') {
+sign = -1;
+}
+if (sign == 0) {
+// Try parsing a custom time zone "GMT+hh:mm" or "GMT".
+if ((c == 'G' || c == 'g')
+&& (text.length() - start) >= GMT.length()
+&& text.regionMatches(true, start, GMT, 0, GMT.length())) {
+pos.index = start + GMT.length();
+if ((text.length() - pos.index) > 0) {
+c = text.charAt(pos.index);
+if (c == '+') {
+sign = 1;
+} else if (c == '-') {
+sign = -1;
+}
+}
+if (sign == 0) {    /* "GMT" without offset */
+calb.set(Calendar.ZONE_OFFSET, 0)
+.set(Calendar.DST_OFFSET, 0);
+return pos.index;
+}
+// Parse the rest as "hh:mm"
+int i = subParseNumericZone(text, ++pos.index,
+sign, 0, true, calb);
+if (i > 0) {
+return i;
+}
+pos.index = -i;
+} else {
+// Try parsing the text as a time zone
+// name or abbreviation.
+int i = subParseZoneString(text, pos.index, calb);
+if (i > 0) {
+return i;
+}
+pos.index = -i;
+}
+} else {
+// Parse the rest as "hhmm" (RFC 822)
+int i = subParseNumericZone(text, ++pos.index,
+sign, 0, false, calb);
+if (i > 0) {
+return i;
+}
+pos.index = -i;
+}
+} catch (IndexOutOfBoundsException e) {
+}
+}
+break parsing;
+case PATTERN_ISO_ZONE:   // 'X'
+{
+if ((text.length() - pos.index) <= 0) {
+break parsing;
+}
+int sign;
+char c = text.charAt(pos.index);
+if (c == 'Z') {
+calb.set(Calendar.ZONE_OFFSET, 0).set(Calendar.DST_OFFSET, 0);
+return ++pos.index;
+}
+// parse text as "+/-hh[[:]mm]" based on count
+if (c == '+') {
+sign = 1;
+} else if (c == '-') {
+sign = -1;
+} else {
+++pos.index;
+break parsing;
+}
+int i = subParseNumericZone(text, ++pos.index, sign, count,
+count == 3, calb);
+if (i > 0) {
+return i;
+}
+pos.index = -i;
+}
+break parsing;
+default:
+// case PATTERN_DAY_OF_MONTH:         // 'd'
+// case PATTERN_HOUR_OF_DAY0:         // 'H' 0-based.  eg, 23:59 + 1 hour =>> 00:59
+// case PATTERN_MINUTE:               // 'm'
+// case PATTERN_SECOND:               // 's'
+// case PATTERN_MILLISECOND:          // 'S'
+// case PATTERN_DAY_OF_YEAR:          // 'D'
+// case PATTERN_DAY_OF_WEEK_IN_MONTH: // 'F'
+// case PATTERN_WEEK_OF_YEAR:         // 'w'
+// case PATTERN_WEEK_OF_MONTH:        // 'W'
+// case PATTERN_HOUR0:                // 'K' 0-based.  eg, 11PM + 1 hour =>> 0 AM
+// case PATTERN_ISO_DAY_OF_WEEK:      // 'u' (pseudo field);
+// Handle "generic" fields
+if (obeyCount) {
+if ((start+count) > text.length()) {
+break parsing;
+}
+number = numberFormat.parse(text.substring(0, start+count), pos);
+} else {
+number = numberFormat.parse(text, pos);
+}
+if (number != null) {
+value = number.intValue();
+if (useFollowingMinusSignAsDelimiter && (value < 0) &&
+(((pos.index < text.length()) &&
+(text.charAt(pos.index) != minusSign)) ||
+((pos.index == text.length()) &&
+(text.charAt(pos.index-1) == minusSign)))) {
+value = -value;
+pos.index--;
+}
+calb.set(field, value);
+return pos.index;
+}
+break parsing;
+}
+}
+// Parsing failed.
+origPos.errorIndex = pos.index;
+return -1;
+}
+/**
+* Returns true if the DateFormatSymbols has been set explicitly or locale
+* is null.
+*/
+private boolean useDateFormatSymbols() {
+return useDateFormatSymbols || locale == null;
+}
+/**
+* Translates a pattern, mapping each character in the from string to the
+* corresponding character in the to string.
+*
+* @exception IllegalArgumentException if the given pattern is invalid
+*/
+private String translatePattern(String pattern, String from, String to) {
+StringBuilder result = new StringBuilder();
+boolean inQuote = false;
+for (int i = 0; i < pattern.length(); ++i) {
+char c = pattern.charAt(i);
+if (inQuote) {
+if (c == '\'') {
+inQuote = false;
+}
+}
+else {
+if (c == '\'') {
+inQuote = true;
+} else if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
+int ci = from.indexOf(c);
+if (ci >= 0) {
+// patternChars is longer than localPatternChars due
+// to serialization compatibility. The pattern letters
+// unsupported by localPatternChars pass through.
+if (ci < to.length()) {
+c = to.charAt(ci);
+}
+} else {
+throw new IllegalArgumentException("Illegal pattern " +
+" character '" +
+c + "'");
+}
+}
+}
+result.append(c);
+}
+if (inQuote) {
+throw new IllegalArgumentException("Unfinished quote in pattern");
+}
+return result.toString();
+}
+/**
+* Returns a pattern string describing this date format.
+*
+* @return a pattern string describing this date format.
+*/
+public String toPattern() {
+return pattern;
+}
+/**
+* Returns a localized pattern string describing this date format.
+*
+* @return a localized pattern string describing this date format.
+*/
+public String toLocalizedPattern() {
+return translatePattern(pattern,
+DateFormatSymbols.patternChars,
+formatData.getLocalPatternChars());
+}
+/**
+* Applies the given pattern string to this date format.
+*
+* @param pattern the new date and time pattern for this date format
+* @exception NullPointerException if the given pattern is null
+* @exception IllegalArgumentException if the given pattern is invalid
+*/
+public void applyPattern(String pattern)
+{
+applyPatternImpl(pattern);
+}
+private void applyPatternImpl(String pattern) {
+compiledPattern = compile(pattern);
+this.pattern = pattern;
+}
+/**
+* Applies the given localized pattern string to this date format.
+*
+* @param pattern a String to be mapped to the new date and time format
+*        pattern for this format
+* @exception NullPointerException if the given pattern is null
+* @exception IllegalArgumentException if the given pattern is invalid
+*/
+public void applyLocalizedPattern(String pattern) {
+String p = translatePattern(pattern,
+formatData.getLocalPatternChars(),
+DateFormatSymbols.patternChars);
+compiledPattern = compile(p);
+this.pattern = p;
+}
+/**
+* Gets a copy of the date and time format symbols of this date format.
+*
+* @return the date and time format symbols of this date format
+* @see #setDateFormatSymbols
+*/
+public DateFormatSymbols getDateFormatSymbols()
+{
+return (DateFormatSymbols)formatData.clone();
+}
+/**
+* Sets the date and time format symbols of this date format.
+*
+* @param newFormatSymbols the new date and time format symbols
+* @exception NullPointerException if the given newFormatSymbols is null
+* @see #getDateFormatSymbols
+*/
+public void setDateFormatSymbols(DateFormatSymbols newFormatSymbols)
+{
+this.formatData = (DateFormatSymbols)newFormatSymbols.clone();
+useDateFormatSymbols = true;
+}
+/**
+* Creates a copy of this <code>SimpleDateFormat</code>. This also
+* clones the format's date format symbols.
+*
+* @return a clone of this <code>SimpleDateFormat</code>
+*/
+@Override
+public Object clone() {
+SimpleDateFormat other = (SimpleDateFormat) super.clone();
+other.formatData = (DateFormatSymbols) formatData.clone();
+return other;
+}
+/**
+* Returns the hash code value for this <code>SimpleDateFormat</code> object.
+*
+* @return the hash code value for this <code>SimpleDateFormat</code> object.
+*/
+@Override
+public int hashCode()
+{
+return pattern.hashCode();
+// just enough fields for a reasonable distribution
+}
+/**
+* Compares the given object with this <code>SimpleDateFormat</code> for
+* equality.
+*
+* @return true if the given object is equal to this
+* <code>SimpleDateFormat</code>
+*/
+@Override
+public boolean equals(Object obj)
+{
+if (!super.equals(obj)) {
+return false; // super does class check
+}
+SimpleDateFormat that = (SimpleDateFormat) obj;
+return (pattern.equals(that.pattern)
+&& formatData.equals(that.formatData));
+}
+private static final int[] REST_OF_STYLES = {
+Calendar.SHORT_STANDALONE, Calendar.LONG_FORMAT, Calendar.LONG_STANDALONE,
+};
+private Map<String, Integer> getDisplayNamesMap(int field, Locale locale) {
+Map<String, Integer> map = calendar.getDisplayNames(field, Calendar.SHORT_FORMAT, locale);
+// Get all SHORT and LONG styles (avoid NARROW styles).
+for (int style : REST_OF_STYLES) {
+Map<String, Integer> m = calendar.getDisplayNames(field, style, locale);
+if (m != null) {
+map.putAll(m);
+}
+}
+return map;
+}
+/**
+* After reading an object from the input stream, the format
+* pattern in the object is verified.
+*
+* @exception InvalidObjectException if the pattern is invalid
+*/
+private void readObject(ObjectInputStream stream)
+throws IOException, ClassNotFoundException {
+stream.defaultReadObject();
+try {
+compiledPattern = compile(pattern);
+} catch (Exception e) {
+throw new InvalidObjectException("invalid pattern");
+}
+if (serialVersionOnStream < 1) {
+// didn't have defaultCenturyStart field
+initializeDefaultCentury();
+}
+else {
+// fill in dependent transient field
+parseAmbiguousDatesAsAfter(defaultCenturyStart);
+}
+serialVersionOnStream = currentSerialVersion;
+// If the deserialized object has a SimpleTimeZone, try
+// to replace it with a ZoneInfo equivalent in order to
+// be compatible with the SimpleTimeZone-based
+// implementation as much as possible.
+TimeZone tz = getTimeZone();
+if (tz instanceof SimpleTimeZone) {
+String id = tz.getID();
+TimeZone zi = TimeZone.getTimeZone(id);
+if (zi != null && zi.hasSameRules(tz) && zi.getID().equals(id)) {
+setTimeZone(zi);
+}
+}
+}
+/**
+* Analyze the negative subpattern of DecimalFormat and set/update values
+* as necessary.
+*/
+private void checkNegativeNumberExpression() {
+if ((numberFormat instanceof DecimalFormat) &&
+!numberFormat.equals(originalNumberFormat)) {
+String numberPattern = ((DecimalFormat)numberFormat).toPattern();
+if (!numberPattern.equals(originalNumberPattern)) {
+hasFollowingMinusSign = false;
+int separatorIndex = numberPattern.indexOf(';');
+// If the negative subpattern is not absent, we have to analayze
+// it in order to check if it has a following minus sign.
+if (separatorIndex > -1) {
+int minusIndex = numberPattern.indexOf('-', separatorIndex);
+if ((minusIndex > numberPattern.lastIndexOf('0')) &&
+(minusIndex > numberPattern.lastIndexOf('#'))) {
+hasFollowingMinusSign = true;
+minusSign = ((DecimalFormat)numberFormat).getDecimalFormatSymbols().getMinusSign();
+}
+}
+originalNumberPattern = numberPattern;
+}
+originalNumberFormat = numberFormat;
+}
+}
+}

changeset 47216	71c04702a3d5
parent 45881	aaec0fbe17ae
child 48026	89deac44e515