--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/text/DateFormatSymbols.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,883 @@
+/*
+ * Copyright (c) 1996, 2016, 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 - 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.ObjectOutputStream;
+import java.io.Serializable;
+import java.lang.ref.SoftReference;
+import java.text.spi.DateFormatSymbolsProvider;
+import java.util.Arrays;
+import java.util.Locale;
+import java.util.Objects;
+import java.util.ResourceBundle;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import sun.util.locale.provider.LocaleProviderAdapter;
+import sun.util.locale.provider.LocaleServiceProviderPool;
+import sun.util.locale.provider.ResourceBundleBasedAdapter;
+import sun.util.locale.provider.TimeZoneNameUtility;
+
+/**
+ * <code>DateFormatSymbols</code> is a public class for encapsulating
+ * localizable date-time formatting data, such as the names of the
+ * months, the names of the days of the week, and the time zone data.
+ * <code>SimpleDateFormat</code> uses
+ * <code>DateFormatSymbols</code> to encapsulate this information.
+ *
+ * <p>
+ * Typically you shouldn't use <code>DateFormatSymbols</code> directly.
+ * Rather, you are encouraged to create a date-time formatter with the
+ * <code>DateFormat</code> class's factory methods: <code>getTimeInstance</code>,
+ * <code>getDateInstance</code>, or <code>getDateTimeInstance</code>.
+ * These methods automatically create a <code>DateFormatSymbols</code> for
+ * the formatter so that you don't have to. After the
+ * formatter is created, you may modify its format pattern using the
+ * <code>setPattern</code> method. For more information about
+ * creating formatters using <code>DateFormat</code>'s factory methods,
+ * see {@link DateFormat}.
+ *
+ * <p>
+ * If you decide to create a date-time formatter with a specific
+ * format pattern for a specific locale, you can do so with:
+ * <blockquote>
+ * <pre>
+ * new SimpleDateFormat(aPattern, DateFormatSymbols.getInstance(aLocale)).
+ * </pre>
+ * </blockquote>
+ *
+ * <p>
+ * <code>DateFormatSymbols</code> objects are cloneable. When you obtain
+ * a <code>DateFormatSymbols</code> object, feel free to modify the
+ * date-time formatting data. For instance, you can replace the localized
+ * date-time format pattern characters with the ones that you feel easy
+ * to remember. Or you can change the representative cities
+ * to your favorite ones.
+ *
+ * <p>
+ * New <code>DateFormatSymbols</code> subclasses may be added to support
+ * <code>SimpleDateFormat</code> for date-time formatting for additional locales.
+
+ * @see DateFormat
+ * @see SimpleDateFormat
+ * @see java.util.SimpleTimeZone
+ * @author Chen-Lieh Huang
+ * @since 1.1
+ */
+public class DateFormatSymbols implements Serializable, Cloneable {
+
+ /**
+ * Construct a DateFormatSymbols object by loading format data from
+ * resources for the default {@link java.util.Locale.Category#FORMAT FORMAT}
+ * locale. This constructor can only
+ * construct instances for the locales supported by the Java
+ * runtime environment, not for those supported by installed
+ * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
+ * implementations. For full locale coverage, use the
+ * {@link #getInstance(Locale) getInstance} method.
+ * <p>This is equivalent to calling
+ * {@link #DateFormatSymbols(Locale)
+ * DateFormatSymbols(Locale.getDefault(Locale.Category.FORMAT))}.
+ * @see #getInstance()
+ * @see java.util.Locale#getDefault(java.util.Locale.Category)
+ * @see java.util.Locale.Category#FORMAT
+ * @exception java.util.MissingResourceException
+ * if the resources for the default locale cannot be
+ * found or cannot be loaded.
+ */
+ public DateFormatSymbols()
+ {
+ initializeData(Locale.getDefault(Locale.Category.FORMAT));
+ }
+
+ /**
+ * Construct a DateFormatSymbols object by loading format data from
+ * resources for the given locale. This constructor can only
+ * construct instances for the locales supported by the Java
+ * runtime environment, not for those supported by installed
+ * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
+ * implementations. For full locale coverage, use the
+ * {@link #getInstance(Locale) getInstance} method.
+ *
+ * @param locale the desired locale
+ * @see #getInstance(Locale)
+ * @exception java.util.MissingResourceException
+ * if the resources for the specified locale cannot be
+ * found or cannot be loaded.
+ */
+ public DateFormatSymbols(Locale locale)
+ {
+ initializeData(locale);
+ }
+
+ /**
+ * Constructs an uninitialized DateFormatSymbols.
+ */
+ private DateFormatSymbols(boolean flag) {
+ }
+
+ /**
+ * Era strings. For example: "AD" and "BC". An array of 2 strings,
+ * indexed by <code>Calendar.BC</code> and <code>Calendar.AD</code>.
+ * @serial
+ */
+ String eras[] = null;
+
+ /**
+ * Month strings. For example: "January", "February", etc. An array
+ * of 13 strings (some calendars have 13 months), indexed by
+ * <code>Calendar.JANUARY</code>, <code>Calendar.FEBRUARY</code>, etc.
+ * @serial
+ */
+ String months[] = null;
+
+ /**
+ * Short month strings. For example: "Jan", "Feb", etc. An array of
+ * 13 strings (some calendars have 13 months), indexed by
+ * <code>Calendar.JANUARY</code>, <code>Calendar.FEBRUARY</code>, etc.
+
+ * @serial
+ */
+ String shortMonths[] = null;
+
+ /**
+ * Weekday strings. For example: "Sunday", "Monday", etc. An array
+ * of 8 strings, indexed by <code>Calendar.SUNDAY</code>,
+ * <code>Calendar.MONDAY</code>, etc.
+ * The element <code>weekdays[0]</code> is ignored.
+ * @serial
+ */
+ String weekdays[] = null;
+
+ /**
+ * Short weekday strings. For example: "Sun", "Mon", etc. An array
+ * of 8 strings, indexed by <code>Calendar.SUNDAY</code>,
+ * <code>Calendar.MONDAY</code>, etc.
+ * The element <code>shortWeekdays[0]</code> is ignored.
+ * @serial
+ */
+ String shortWeekdays[] = null;
+
+ /**
+ * AM and PM strings. For example: "AM" and "PM". An array of
+ * 2 strings, indexed by <code>Calendar.AM</code> and
+ * <code>Calendar.PM</code>.
+ * @serial
+ */
+ String ampms[] = null;
+
+ /**
+ * Localized names of time zones in this locale. This is a
+ * two-dimensional array of strings of size <em>n</em> by <em>m</em>,
+ * where <em>m</em> is at least 5. Each of the <em>n</em> rows is an
+ * entry containing the localized names for a single <code>TimeZone</code>.
+ * Each such row contains (with <code>i</code> ranging from
+ * 0..<em>n</em>-1):
+ * <ul>
+ * <li><code>zoneStrings[i][0]</code> - time zone ID</li>
+ * <li><code>zoneStrings[i][1]</code> - long name of zone in standard
+ * time</li>
+ * <li><code>zoneStrings[i][2]</code> - short name of zone in
+ * standard time</li>
+ * <li><code>zoneStrings[i][3]</code> - long name of zone in daylight
+ * saving time</li>
+ * <li><code>zoneStrings[i][4]</code> - short name of zone in daylight
+ * saving time</li>
+ * </ul>
+ * The zone ID is <em>not</em> localized; it's one of the valid IDs of
+ * the {@link java.util.TimeZone TimeZone} class that are not
+ * <a href="../util/TimeZone.html#CustomID">custom IDs</a>.
+ * All other entries are localized names.
+ * @see java.util.TimeZone
+ * @serial
+ */
+ String zoneStrings[][] = null;
+
+ /**
+ * Indicates that zoneStrings is set externally with setZoneStrings() method.
+ */
+ transient boolean isZoneStringsSet = false;
+
+ /**
+ * Unlocalized date-time pattern characters. For example: 'y', 'd', etc.
+ * All locales use the same these unlocalized pattern characters.
+ */
+ static final String patternChars = "GyMdkHmsSEDFwWahKzZYuXL";
+
+ static final int PATTERN_ERA = 0; // G
+ static final int PATTERN_YEAR = 1; // y
+ static final int PATTERN_MONTH = 2; // M
+ static final int PATTERN_DAY_OF_MONTH = 3; // d
+ static final int PATTERN_HOUR_OF_DAY1 = 4; // k
+ static final int PATTERN_HOUR_OF_DAY0 = 5; // H
+ static final int PATTERN_MINUTE = 6; // m
+ static final int PATTERN_SECOND = 7; // s
+ static final int PATTERN_MILLISECOND = 8; // S
+ static final int PATTERN_DAY_OF_WEEK = 9; // E
+ static final int PATTERN_DAY_OF_YEAR = 10; // D
+ static final int PATTERN_DAY_OF_WEEK_IN_MONTH = 11; // F
+ static final int PATTERN_WEEK_OF_YEAR = 12; // w
+ static final int PATTERN_WEEK_OF_MONTH = 13; // W
+ static final int PATTERN_AM_PM = 14; // a
+ static final int PATTERN_HOUR1 = 15; // h
+ static final int PATTERN_HOUR0 = 16; // K
+ static final int PATTERN_ZONE_NAME = 17; // z
+ static final int PATTERN_ZONE_VALUE = 18; // Z
+ static final int PATTERN_WEEK_YEAR = 19; // Y
+ static final int PATTERN_ISO_DAY_OF_WEEK = 20; // u
+ static final int PATTERN_ISO_ZONE = 21; // X
+ static final int PATTERN_MONTH_STANDALONE = 22; // L
+
+ /**
+ * Localized date-time pattern characters. For example, a locale may
+ * wish to use 'u' rather than 'y' to represent years in its date format
+ * pattern strings.
+ * This string must be exactly 18 characters long, with the index of
+ * the characters described by <code>DateFormat.ERA_FIELD</code>,
+ * <code>DateFormat.YEAR_FIELD</code>, etc. Thus, if the string were
+ * "Xz...", then localized patterns would use 'X' for era and 'z' for year.
+ * @serial
+ */
+ String localPatternChars = null;
+
+ /**
+ * The locale which is used for initializing this DateFormatSymbols object.
+ *
+ * @since 1.6
+ * @serial
+ */
+ Locale locale = null;
+
+ /* use serialVersionUID from JDK 1.1.4 for interoperability */
+ static final long serialVersionUID = -5987973545549424702L;
+
+ /**
+ * Returns an array of all locales for which the
+ * <code>getInstance</code> methods of this class can return
+ * localized instances.
+ * The returned array represents the union of locales supported by the
+ * Java runtime and by installed
+ * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
+ * implementations. It must contain at least a <code>Locale</code>
+ * instance equal to {@link java.util.Locale#US Locale.US}.
+ *
+ * @return An array of locales for which localized
+ * <code>DateFormatSymbols</code> instances are available.
+ * @since 1.6
+ */
+ public static Locale[] getAvailableLocales() {
+ LocaleServiceProviderPool pool=
+ LocaleServiceProviderPool.getPool(DateFormatSymbolsProvider.class);
+ return pool.getAvailableLocales();
+ }
+
+ /**
+ * Gets the <code>DateFormatSymbols</code> instance for the default
+ * locale. This method provides access to <code>DateFormatSymbols</code>
+ * instances for locales supported by the Java runtime itself as well
+ * as for those supported by installed
+ * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
+ * implementations.
+ * <p>This is equivalent to calling {@link #getInstance(Locale)
+ * getInstance(Locale.getDefault(Locale.Category.FORMAT))}.
+ * @see java.util.Locale#getDefault(java.util.Locale.Category)
+ * @see java.util.Locale.Category#FORMAT
+ * @return a <code>DateFormatSymbols</code> instance.
+ * @since 1.6
+ */
+ public static final DateFormatSymbols getInstance() {
+ return getInstance(Locale.getDefault(Locale.Category.FORMAT));
+ }
+
+ /**
+ * Gets the <code>DateFormatSymbols</code> instance for the specified
+ * locale. This method provides access to <code>DateFormatSymbols</code>
+ * instances for locales supported by the Java runtime itself as well
+ * as for those supported by installed
+ * {@link java.text.spi.DateFormatSymbolsProvider DateFormatSymbolsProvider}
+ * implementations.
+ * @param locale the given locale.
+ * @return a <code>DateFormatSymbols</code> instance.
+ * @exception NullPointerException if <code>locale</code> is null
+ * @since 1.6
+ */
+ public static final DateFormatSymbols getInstance(Locale locale) {
+ DateFormatSymbols dfs = getProviderInstance(locale);
+ if (dfs != null) {
+ return dfs;
+ }
+ throw new RuntimeException("DateFormatSymbols instance creation failed.");
+ }
+
+ /**
+ * Returns a DateFormatSymbols provided by a provider or found in
+ * the cache. Note that this method returns a cached instance,
+ * not its clone. Therefore, the instance should never be given to
+ * an application.
+ */
+ static final DateFormatSymbols getInstanceRef(Locale locale) {
+ DateFormatSymbols dfs = getProviderInstance(locale);
+ if (dfs != null) {
+ return dfs;
+ }
+ throw new RuntimeException("DateFormatSymbols instance creation failed.");
+ }
+
+ private static DateFormatSymbols getProviderInstance(Locale locale) {
+ LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(DateFormatSymbolsProvider.class, locale);
+ DateFormatSymbolsProvider provider = adapter.getDateFormatSymbolsProvider();
+ DateFormatSymbols dfsyms = provider.getInstance(locale);
+ if (dfsyms == null) {
+ provider = LocaleProviderAdapter.forJRE().getDateFormatSymbolsProvider();
+ dfsyms = provider.getInstance(locale);
+ }
+ return dfsyms;
+ }
+
+ /**
+ * Gets era strings. For example: "AD" and "BC".
+ * @return the era strings.
+ */
+ public String[] getEras() {
+ return Arrays.copyOf(eras, eras.length);
+ }
+
+ /**
+ * Sets era strings. For example: "AD" and "BC".
+ * @param newEras the new era strings.
+ */
+ public void setEras(String[] newEras) {
+ eras = Arrays.copyOf(newEras, newEras.length);
+ cachedHashCode = 0;
+ }
+
+ /**
+ * Gets month strings. For example: "January", "February", etc.
+ *
+ * <p>If the language requires different forms for formatting and
+ * stand-alone usages, this method returns month names in the
+ * formatting form. For example, the preferred month name for
+ * January in the Czech language is <em>ledna</em> in the
+ * formatting form, while it is <em>leden</em> in the stand-alone
+ * form. This method returns {@code "ledna"} in this case. Refer
+ * to the <a href="http://unicode.org/reports/tr35/#Calendar_Elements">
+ * Calendar Elements in the Unicode Locale Data Markup Language
+ * (LDML) specification</a> for more details.
+ *
+ * @return the month strings. Use
+ * {@link java.util.Calendar#JANUARY Calendar.JANUARY},
+ * {@link java.util.Calendar#FEBRUARY Calendar.FEBRUARY},
+ * etc. to index the result array.
+ */
+ public String[] getMonths() {
+ return Arrays.copyOf(months, months.length);
+ }
+
+ /**
+ * Sets month strings. For example: "January", "February", etc.
+ * @param newMonths the new month strings. The array should
+ * be indexed by {@link java.util.Calendar#JANUARY Calendar.JANUARY},
+ * {@link java.util.Calendar#FEBRUARY Calendar.FEBRUARY}, etc.
+ */
+ public void setMonths(String[] newMonths) {
+ months = Arrays.copyOf(newMonths, newMonths.length);
+ cachedHashCode = 0;
+ }
+
+ /**
+ * Gets short month strings. For example: "Jan", "Feb", etc.
+ *
+ * <p>If the language requires different forms for formatting and
+ * stand-alone usages, this method returns short month names in
+ * the formatting form. For example, the preferred abbreviation
+ * for January in the Catalan language is <em>de gen.</em> in the
+ * formatting form, while it is <em>gen.</em> in the stand-alone
+ * form. This method returns {@code "de gen."} in this case. Refer
+ * to the <a href="http://unicode.org/reports/tr35/#Calendar_Elements">
+ * Calendar Elements in the Unicode Locale Data Markup Language
+ * (LDML) specification</a> for more details.
+ *
+ * @return the short month strings. Use
+ * {@link java.util.Calendar#JANUARY Calendar.JANUARY},
+ * {@link java.util.Calendar#FEBRUARY Calendar.FEBRUARY},
+ * etc. to index the result array.
+ */
+ public String[] getShortMonths() {
+ return Arrays.copyOf(shortMonths, shortMonths.length);
+ }
+
+ /**
+ * Sets short month strings. For example: "Jan", "Feb", etc.
+ * @param newShortMonths the new short month strings. The array should
+ * be indexed by {@link java.util.Calendar#JANUARY Calendar.JANUARY},
+ * {@link java.util.Calendar#FEBRUARY Calendar.FEBRUARY}, etc.
+ */
+ public void setShortMonths(String[] newShortMonths) {
+ shortMonths = Arrays.copyOf(newShortMonths, newShortMonths.length);
+ cachedHashCode = 0;
+ }
+
+ /**
+ * Gets weekday strings. For example: "Sunday", "Monday", etc.
+ * @return the weekday strings. Use
+ * {@link java.util.Calendar#SUNDAY Calendar.SUNDAY},
+ * {@link java.util.Calendar#MONDAY Calendar.MONDAY}, etc. to index
+ * the result array.
+ */
+ public String[] getWeekdays() {
+ return Arrays.copyOf(weekdays, weekdays.length);
+ }
+
+ /**
+ * Sets weekday strings. For example: "Sunday", "Monday", etc.
+ * @param newWeekdays the new weekday strings. The array should
+ * be indexed by {@link java.util.Calendar#SUNDAY Calendar.SUNDAY},
+ * {@link java.util.Calendar#MONDAY Calendar.MONDAY}, etc.
+ */
+ public void setWeekdays(String[] newWeekdays) {
+ weekdays = Arrays.copyOf(newWeekdays, newWeekdays.length);
+ cachedHashCode = 0;
+ }
+
+ /**
+ * Gets short weekday strings. For example: "Sun", "Mon", etc.
+ * @return the short weekday strings. Use
+ * {@link java.util.Calendar#SUNDAY Calendar.SUNDAY},
+ * {@link java.util.Calendar#MONDAY Calendar.MONDAY}, etc. to index
+ * the result array.
+ */
+ public String[] getShortWeekdays() {
+ return Arrays.copyOf(shortWeekdays, shortWeekdays.length);
+ }
+
+ /**
+ * Sets short weekday strings. For example: "Sun", "Mon", etc.
+ * @param newShortWeekdays the new short weekday strings. The array should
+ * be indexed by {@link java.util.Calendar#SUNDAY Calendar.SUNDAY},
+ * {@link java.util.Calendar#MONDAY Calendar.MONDAY}, etc.
+ */
+ public void setShortWeekdays(String[] newShortWeekdays) {
+ shortWeekdays = Arrays.copyOf(newShortWeekdays, newShortWeekdays.length);
+ cachedHashCode = 0;
+ }
+
+ /**
+ * Gets ampm strings. For example: "AM" and "PM".
+ * @return the ampm strings.
+ */
+ public String[] getAmPmStrings() {
+ return Arrays.copyOf(ampms, ampms.length);
+ }
+
+ /**
+ * Sets ampm strings. For example: "AM" and "PM".
+ * @param newAmpms the new ampm strings.
+ */
+ public void setAmPmStrings(String[] newAmpms) {
+ ampms = Arrays.copyOf(newAmpms, newAmpms.length);
+ cachedHashCode = 0;
+ }
+
+ /**
+ * Gets time zone strings. Use of this method is discouraged; use
+ * {@link java.util.TimeZone#getDisplayName() TimeZone.getDisplayName()}
+ * instead.
+ * <p>
+ * The value returned is a
+ * two-dimensional array of strings of size <em>n</em> by <em>m</em>,
+ * where <em>m</em> is at least 5. Each of the <em>n</em> rows is an
+ * entry containing the localized names for a single <code>TimeZone</code>.
+ * Each such row contains (with <code>i</code> ranging from
+ * 0..<em>n</em>-1):
+ * <ul>
+ * <li><code>zoneStrings[i][0]</code> - time zone ID</li>
+ * <li><code>zoneStrings[i][1]</code> - long name of zone in standard
+ * time</li>
+ * <li><code>zoneStrings[i][2]</code> - short name of zone in
+ * standard time</li>
+ * <li><code>zoneStrings[i][3]</code> - long name of zone in daylight
+ * saving time</li>
+ * <li><code>zoneStrings[i][4]</code> - short name of zone in daylight
+ * saving time</li>
+ * </ul>
+ * The zone ID is <em>not</em> localized; it's one of the valid IDs of
+ * the {@link java.util.TimeZone TimeZone} class that are not
+ * <a href="../util/TimeZone.html#CustomID">custom IDs</a>.
+ * All other entries are localized names. If a zone does not implement
+ * daylight saving time, the daylight saving time names should not be used.
+ * <p>
+ * If {@link #setZoneStrings(String[][]) setZoneStrings} has been called
+ * on this <code>DateFormatSymbols</code> instance, then the strings
+ * provided by that call are returned. Otherwise, the returned array
+ * contains names provided by the Java runtime and by installed
+ * {@link java.util.spi.TimeZoneNameProvider TimeZoneNameProvider}
+ * implementations.
+ *
+ * @return the time zone strings.
+ * @see #setZoneStrings(String[][])
+ */
+ public String[][] getZoneStrings() {
+ return getZoneStringsImpl(true);
+ }
+
+ /**
+ * Sets time zone strings. The argument must be a
+ * two-dimensional array of strings of size <em>n</em> by <em>m</em>,
+ * where <em>m</em> is at least 5. Each of the <em>n</em> rows is an
+ * entry containing the localized names for a single <code>TimeZone</code>.
+ * Each such row contains (with <code>i</code> ranging from
+ * 0..<em>n</em>-1):
+ * <ul>
+ * <li><code>zoneStrings[i][0]</code> - time zone ID</li>
+ * <li><code>zoneStrings[i][1]</code> - long name of zone in standard
+ * time</li>
+ * <li><code>zoneStrings[i][2]</code> - short name of zone in
+ * standard time</li>
+ * <li><code>zoneStrings[i][3]</code> - long name of zone in daylight
+ * saving time</li>
+ * <li><code>zoneStrings[i][4]</code> - short name of zone in daylight
+ * saving time</li>
+ * </ul>
+ * The zone ID is <em>not</em> localized; it's one of the valid IDs of
+ * the {@link java.util.TimeZone TimeZone} class that are not
+ * <a href="../util/TimeZone.html#CustomID">custom IDs</a>.
+ * All other entries are localized names.
+ *
+ * @param newZoneStrings the new time zone strings.
+ * @exception IllegalArgumentException if the length of any row in
+ * <code>newZoneStrings</code> is less than 5
+ * @exception NullPointerException if <code>newZoneStrings</code> is null
+ * @see #getZoneStrings()
+ */
+ public void setZoneStrings(String[][] newZoneStrings) {
+ String[][] aCopy = new String[newZoneStrings.length][];
+ for (int i = 0; i < newZoneStrings.length; ++i) {
+ int len = newZoneStrings[i].length;
+ if (len < 5) {
+ throw new IllegalArgumentException();
+ }
+ aCopy[i] = Arrays.copyOf(newZoneStrings[i], len);
+ }
+ zoneStrings = aCopy;
+ isZoneStringsSet = true;
+ cachedHashCode = 0;
+ }
+
+ /**
+ * Gets localized date-time pattern characters. For example: 'u', 't', etc.
+ * @return the localized date-time pattern characters.
+ */
+ public String getLocalPatternChars() {
+ return localPatternChars;
+ }
+
+ /**
+ * Sets localized date-time pattern characters. For example: 'u', 't', etc.
+ * @param newLocalPatternChars the new localized date-time
+ * pattern characters.
+ */
+ public void setLocalPatternChars(String newLocalPatternChars) {
+ // Call toString() to throw an NPE in case the argument is null
+ localPatternChars = newLocalPatternChars.toString();
+ cachedHashCode = 0;
+ }
+
+ /**
+ * Overrides Cloneable
+ */
+ public Object clone()
+ {
+ try
+ {
+ DateFormatSymbols other = (DateFormatSymbols)super.clone();
+ copyMembers(this, other);
+ return other;
+ } catch (CloneNotSupportedException e) {
+ throw new InternalError(e);
+ }
+ }
+
+ /**
+ * Override hashCode.
+ * Generates a hash code for the DateFormatSymbols object.
+ */
+ @Override
+ public int hashCode() {
+ int hashCode = cachedHashCode;
+ if (hashCode == 0) {
+ hashCode = 5;
+ hashCode = 11 * hashCode + Arrays.hashCode(eras);
+ hashCode = 11 * hashCode + Arrays.hashCode(months);
+ hashCode = 11 * hashCode + Arrays.hashCode(shortMonths);
+ hashCode = 11 * hashCode + Arrays.hashCode(weekdays);
+ hashCode = 11 * hashCode + Arrays.hashCode(shortWeekdays);
+ hashCode = 11 * hashCode + Arrays.hashCode(ampms);
+ hashCode = 11 * hashCode + Arrays.deepHashCode(getZoneStringsWrapper());
+ hashCode = 11 * hashCode + Objects.hashCode(localPatternChars);
+ if (hashCode != 0) {
+ cachedHashCode = hashCode;
+ }
+ }
+
+ return hashCode;
+ }
+
+ /**
+ * Override equals
+ */
+ public boolean equals(Object obj)
+ {
+ if (this == obj) return true;
+ if (obj == null || getClass() != obj.getClass()) return false;
+ DateFormatSymbols that = (DateFormatSymbols) obj;
+ return (Arrays.equals(eras, that.eras)
+ && Arrays.equals(months, that.months)
+ && Arrays.equals(shortMonths, that.shortMonths)
+ && Arrays.equals(weekdays, that.weekdays)
+ && Arrays.equals(shortWeekdays, that.shortWeekdays)
+ && Arrays.equals(ampms, that.ampms)
+ && Arrays.deepEquals(getZoneStringsWrapper(), that.getZoneStringsWrapper())
+ && ((localPatternChars != null
+ && localPatternChars.equals(that.localPatternChars))
+ || (localPatternChars == null
+ && that.localPatternChars == null)));
+ }
+
+ // =======================privates===============================
+
+ /**
+ * Useful constant for defining time zone offsets.
+ */
+ static final int millisPerHour = 60*60*1000;
+
+ /**
+ * Cache to hold DateFormatSymbols instances per Locale.
+ */
+ private static final ConcurrentMap<Locale, SoftReference<DateFormatSymbols>> cachedInstances
+ = new ConcurrentHashMap<>(3);
+
+ private transient int lastZoneIndex;
+
+ /**
+ * Cached hash code
+ */
+ transient volatile int cachedHashCode;
+
+ /**
+ * Initializes this DateFormatSymbols with the locale data. This method uses
+ * a cached DateFormatSymbols instance for the given locale if available. If
+ * there's no cached one, this method creates an uninitialized instance and
+ * populates its fields from the resource bundle for the locale, and caches
+ * the instance. Note: zoneStrings isn't initialized in this method.
+ */
+ private void initializeData(Locale locale) {
+ SoftReference<DateFormatSymbols> ref = cachedInstances.get(locale);
+ DateFormatSymbols dfs;
+ if (ref == null || (dfs = ref.get()) == null) {
+ if (ref != null) {
+ // Remove the empty SoftReference
+ cachedInstances.remove(locale, ref);
+ }
+ dfs = new DateFormatSymbols(false);
+
+ // Initialize the fields from the ResourceBundle for locale.
+ LocaleProviderAdapter adapter
+ = LocaleProviderAdapter.getAdapter(DateFormatSymbolsProvider.class, locale);
+ // Avoid any potential recursions
+ if (!(adapter instanceof ResourceBundleBasedAdapter)) {
+ adapter = LocaleProviderAdapter.getResourceBundleBased();
+ }
+ ResourceBundle resource
+ = ((ResourceBundleBasedAdapter)adapter).getLocaleData().getDateFormatData(locale);
+
+ dfs.locale = locale;
+ // JRE and CLDR use different keys
+ // JRE: Eras, short.Eras and narrow.Eras
+ // CLDR: long.Eras, Eras and narrow.Eras
+ if (resource.containsKey("Eras")) {
+ dfs.eras = resource.getStringArray("Eras");
+ } else if (resource.containsKey("long.Eras")) {
+ dfs.eras = resource.getStringArray("long.Eras");
+ } else if (resource.containsKey("short.Eras")) {
+ dfs.eras = resource.getStringArray("short.Eras");
+ }
+ dfs.months = resource.getStringArray("MonthNames");
+ dfs.shortMonths = resource.getStringArray("MonthAbbreviations");
+ dfs.ampms = resource.getStringArray("AmPmMarkers");
+ dfs.localPatternChars = resource.getString("DateTimePatternChars");
+
+ // Day of week names are stored in a 1-based array.
+ dfs.weekdays = toOneBasedArray(resource.getStringArray("DayNames"));
+ dfs.shortWeekdays = toOneBasedArray(resource.getStringArray("DayAbbreviations"));
+
+ // Put dfs in the cache
+ ref = new SoftReference<>(dfs);
+ SoftReference<DateFormatSymbols> x = cachedInstances.putIfAbsent(locale, ref);
+ if (x != null) {
+ DateFormatSymbols y = x.get();
+ if (y == null) {
+ // Replace the empty SoftReference with ref.
+ cachedInstances.replace(locale, x, ref);
+ } else {
+ ref = x;
+ dfs = y;
+ }
+ }
+ }
+
+ // Copy the field values from dfs to this instance.
+ copyMembers(dfs, this);
+ }
+
+ private static String[] toOneBasedArray(String[] src) {
+ int len = src.length;
+ String[] dst = new String[len + 1];
+ dst[0] = "";
+ for (int i = 0; i < len; i++) {
+ dst[i + 1] = src[i];
+ }
+ return dst;
+ }
+
+ /**
+ * Package private: used by SimpleDateFormat
+ * Gets the index for the given time zone ID to obtain the time zone
+ * strings for formatting. The time zone ID is just for programmatic
+ * lookup. NOT LOCALIZED!!!
+ * @param ID the given time zone ID.
+ * @return the index of the given time zone ID. Returns -1 if
+ * the given time zone ID can't be located in the DateFormatSymbols object.
+ * @see java.util.SimpleTimeZone
+ */
+ final int getZoneIndex(String ID) {
+ String[][] zoneStrings = getZoneStringsWrapper();
+
+ /*
+ * getZoneIndex has been re-written for performance reasons. instead of
+ * traversing the zoneStrings array every time, we cache the last used zone
+ * index
+ */
+ if (lastZoneIndex < zoneStrings.length && ID.equals(zoneStrings[lastZoneIndex][0])) {
+ return lastZoneIndex;
+ }
+
+ /* slow path, search entire list */
+ for (int index = 0; index < zoneStrings.length; index++) {
+ if (ID.equals(zoneStrings[index][0])) {
+ lastZoneIndex = index;
+ return index;
+ }
+ }
+
+ return -1;
+ }
+
+ /**
+ * Wrapper method to the getZoneStrings(), which is called from inside
+ * the java.text package and not to mutate the returned arrays, so that
+ * it does not need to create a defensive copy.
+ */
+ final String[][] getZoneStringsWrapper() {
+ if (isSubclassObject()) {
+ return getZoneStrings();
+ } else {
+ return getZoneStringsImpl(false);
+ }
+ }
+
+ private String[][] getZoneStringsImpl(boolean needsCopy) {
+ if (zoneStrings == null) {
+ zoneStrings = TimeZoneNameUtility.getZoneStrings(locale);
+ }
+
+ if (!needsCopy) {
+ return zoneStrings;
+ }
+
+ int len = zoneStrings.length;
+ String[][] aCopy = new String[len][];
+ for (int i = 0; i < len; i++) {
+ aCopy[i] = Arrays.copyOf(zoneStrings[i], zoneStrings[i].length);
+ }
+ return aCopy;
+ }
+
+ private boolean isSubclassObject() {
+ return !getClass().getName().equals("java.text.DateFormatSymbols");
+ }
+
+ /**
+ * Clones all the data members from the source DateFormatSymbols to
+ * the target DateFormatSymbols.
+ *
+ * @param src the source DateFormatSymbols.
+ * @param dst the target DateFormatSymbols.
+ */
+ private void copyMembers(DateFormatSymbols src, DateFormatSymbols dst)
+ {
+ dst.locale = src.locale;
+ dst.eras = Arrays.copyOf(src.eras, src.eras.length);
+ dst.months = Arrays.copyOf(src.months, src.months.length);
+ dst.shortMonths = Arrays.copyOf(src.shortMonths, src.shortMonths.length);
+ dst.weekdays = Arrays.copyOf(src.weekdays, src.weekdays.length);
+ dst.shortWeekdays = Arrays.copyOf(src.shortWeekdays, src.shortWeekdays.length);
+ dst.ampms = Arrays.copyOf(src.ampms, src.ampms.length);
+ if (src.zoneStrings != null) {
+ dst.zoneStrings = src.getZoneStringsImpl(true);
+ } else {
+ dst.zoneStrings = null;
+ }
+ dst.localPatternChars = src.localPatternChars;
+ dst.cachedHashCode = 0;
+ }
+
+ /**
+ * Write out the default serializable data, after ensuring the
+ * <code>zoneStrings</code> field is initialized in order to make
+ * sure the backward compatibility.
+ *
+ * @since 1.6
+ */
+ private void writeObject(ObjectOutputStream stream) throws IOException {
+ if (zoneStrings == null) {
+ zoneStrings = TimeZoneNameUtility.getZoneStrings(locale);
+ }
+ stream.defaultWriteObject();
+ }
+}