| /* | |
| * Copyright (c) 1996, 2024, 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.CalendarDataUtility; | |
| 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} 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} uses | |
| * {@code DateFormatSymbols} to encapsulate this information. | |
| * | |
| * <p> | |
| * Typically you shouldn't use {@code DateFormatSymbols} directly. | |
| * Rather, you are encouraged to create a date-time formatter with the | |
| * {@code DateFormat} class's factory methods: {@code getTimeInstance}, | |
| * {@code getDateInstance}, or {@code getDateTimeInstance}. | |
| * These methods automatically create a {@code DateFormatSymbols} 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} method. For more information about | |
| * creating formatters using {@code DateFormat}'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> | |
| * {@snippet lang=java : | |
| * new SimpleDateFormat(aPattern, DateFormatSymbols.getInstance(aLocale)); | |
| * } | |
| * </blockquote> | |
| * | |
| * <p>If the locale contains "rg" (region override) | |
| * <a href="../util/Locale.html#def_locale_extension">Unicode extension</a>, | |
| * the symbols are overridden for the designated region. | |
| * | |
| * <p> | |
| * {@code DateFormatSymbols} objects are cloneable. When you obtain | |
| * a {@code DateFormatSymbols} 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} subclasses may be added to support | |
| * {@code SimpleDateFormat} 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 | |
| * @throws 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) | |
| * @throws 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} and {@code Calendar.AD}. | |
| * @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 Calendar.FEBRUARY}, 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 Calendar.FEBRUARY}, etc. | |
| * @serial | |
| */ | |
| String shortMonths[] = null; | |
| /** | |
| * Weekday strings. For example: "Sunday", "Monday", etc. An array | |
| * of 8 strings, indexed by {@code Calendar.SUNDAY}, | |
| * {@code Calendar.MONDAY}, etc. | |
| * The element {@code weekdays[0]} 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 Calendar.MONDAY}, etc. | |
| * The element {@code shortWeekdays[0]} 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} and | |
| * {@code Calendar.PM}. | |
| * @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}. | |
| * Each such row contains (with {@code i} ranging from | |
| * 0..<em>n</em>-1): | |
| * <ul> | |
| * <li>{@code zoneStrings[i][0]} - time zone ID</li> | |
| * <li>{@code zoneStrings[i][1]} - long name of zone in standard | |
| * time</li> | |
| * <li>{@code zoneStrings[i][2]} - short name of zone in | |
| * standard time</li> | |
| * <li>{@code zoneStrings[i][3]} - long name of zone in daylight | |
| * saving time</li> | |
| * <li>{@code zoneStrings[i][4]} - 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 DateFormat.YEAR_FIELD}, 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 */ | |
| @java.io.Serial | |
| static final long serialVersionUID = -5987973545549424702L; | |
| /** | |
| * Returns an array of all locales for which the | |
| * {@code getInstance} 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. At a minimum, the returned array must contain a | |
| * {@code Locale} instance equal to {@link Locale#ROOT Locale.ROOT} and | |
| * a {@code Locale} instance equal to {@link Locale#US Locale.US}. | |
| * | |
| * @return An array of locales for which localized | |
| * {@code DateFormatSymbols} instances are available. | |
| * @since 1.6 | |
| */ | |
| public static Locale[] getAvailableLocales() { | |
| LocaleServiceProviderPool pool= | |
| LocaleServiceProviderPool.getPool(DateFormatSymbolsProvider.class); | |
| return pool.getAvailableLocales(); | |
| } | |
| /** | |
| * Gets the {@code DateFormatSymbols} instance for the default | |
| * locale. This method provides access to {@code DateFormatSymbols} | |
| * 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} instance. | |
| * @since 1.6 | |
| */ | |
| public static final DateFormatSymbols getInstance() { | |
| return getInstance(Locale.getDefault(Locale.Category.FORMAT)); | |
| } | |
| /** | |
| * Gets the {@code DateFormatSymbols} instance for the specified | |
| * locale. This method provides access to {@code DateFormatSymbols} | |
| * 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} instance. | |
| * @throws NullPointerException if {@code locale} 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."); | |
| } | |
| 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. | |
| * An array with either 12 or 13 elements will be returned depending | |
| * on whether or not {@link java.util.Calendar#UNDECIMBER Calendar.UNDECIMBER} | |
| * is supported. Use | |
| * {@link java.util.Calendar#JANUARY Calendar.JANUARY}, | |
| * {@link java.util.Calendar#FEBRUARY Calendar.FEBRUARY}, | |
| * etc. to index the result array. | |
| * | |
| * <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. | |
| * | |
| * @implSpec This method returns 13 elements since | |
| * {@link java.util.Calendar#UNDECIMBER Calendar.UNDECIMBER} is supported. | |
| * @return the month strings. | |
| * | |
| * @spec https://www.unicode.org/reports/tr35 | |
| * Unicode Locale Data Markup Language (LDML) | |
| */ | |
| 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. | |
| * An array with either 12 or 13 elements will be returned depending | |
| * on whether or not {@link java.util.Calendar#UNDECIMBER Calendar.UNDECIMBER} | |
| * is supported. Use | |
| * {@link java.util.Calendar#JANUARY Calendar.JANUARY}, | |
| * {@link java.util.Calendar#FEBRUARY Calendar.FEBRUARY}, | |
| * etc. to index the result array. | |
| * | |
| * <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. | |
| * | |
| * @implSpec This method returns 13 elements since | |
| * {@link java.util.Calendar#UNDECIMBER Calendar.UNDECIMBER} is supported. | |
| * @return the short month strings. | |
| * | |
| * @spec https://www.unicode.org/reports/tr35 | |
| * Unicode Locale Data Markup Language (LDML) | |
| */ | |
| 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}. | |
| * Each such row contains (with {@code i} ranging from | |
| * 0..<em>n</em>-1): | |
| * <ul> | |
| * <li>{@code zoneStrings[i][0]} - time zone ID</li> | |
| * <li>{@code zoneStrings[i][1]} - long name of zone in standard | |
| * time</li> | |
| * <li>{@code zoneStrings[i][2]} - short name of zone in | |
| * standard time</li> | |
| * <li>{@code zoneStrings[i][3]} - long name of zone in daylight | |
| * saving time</li> | |
| * <li>{@code zoneStrings[i][4]} - 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} 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}. | |
| * Each such row contains (with {@code i} ranging from | |
| * 0..<em>n</em>-1): | |
| * <ul> | |
| * <li>{@code zoneStrings[i][0]} - time zone ID</li> | |
| * <li>{@code zoneStrings[i][1]} - long name of zone in standard | |
| * time</li> | |
| * <li>{@code zoneStrings[i][2]} - short name of zone in | |
| * standard time</li> | |
| * <li>{@code zoneStrings[i][3]} - long name of zone in daylight | |
| * saving time</li> | |
| * <li>{@code zoneStrings[i][4]} - 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. | |
| * @throws IllegalArgumentException if the length of any row in | |
| * {@code newZoneStrings} is less than 5 | |
| * @throws NullPointerException if {@code newZoneStrings} 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(String.format( | |
| "Row %s of the input array does not have a length of at least 5", i)); | |
| } | |
| 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); | |
| } | |
| } | |
| /** | |
| * {@return the hash code for this {@code DateFormatSymbols}} | |
| * | |
| * @implSpec Non-transient instance fields of this class are used to calculate | |
| * a hash code value which adheres to the contract defined in {@link Objects#hashCode}. | |
| * @see Object#hashCode() | |
| */ | |
| @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; | |
| } | |
| /** | |
| * Compares the specified object with this {@code DateFormatSymbols} for equality. | |
| * Returns true if the object is also a {@code DateFormatSymbols} and the two | |
| * {@code DateFormatSymbols} objects represent the same date-time formatting data. | |
| * | |
| * @implSpec This method performs an equality check with a notion of class | |
| * identity based on {@code getClass()}, rather than {@code instanceof}. | |
| * Therefore, in the equals methods in subclasses, no instance of this class | |
| * should compare as equal to an instance of a subclass. | |
| * @param obj object to be compared for equality | |
| * @return {@code true} if the specified object is equal to this {@code DateFormatSymbols} | |
| * @see Object#equals(Object) | |
| */ | |
| @Override | |
| 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()) | |
| && Objects.equals(localPatternChars, that.localPatternChars)); | |
| } | |
| // =======================privates=============================== | |
| /** | |
| * 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); | |
| // check for region override | |
| Locale override = CalendarDataUtility.findRegionOverride(locale); | |
| // Initialize the fields from the ResourceBundle for locale. | |
| LocaleProviderAdapter adapter | |
| = LocaleProviderAdapter.getAdapter(DateFormatSymbolsProvider.class, override); | |
| // Avoid any potential recursions | |
| if (!(adapter instanceof ResourceBundleBasedAdapter)) { | |
| adapter = LocaleProviderAdapter.getResourceBundleBased(); | |
| } | |
| ResourceBundle resource | |
| = ((ResourceBundleBasedAdapter)adapter).getLocaleData().getDateFormatData(override); | |
| 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"); | |
| // the array in the resource bundle may contain more elements for day periods. | |
| // Extract only am/pm. | |
| if (dfs.ampms.length > 2) { | |
| dfs.ampms = Arrays.copyOf(dfs.ampms, 2); | |
| } | |
| 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} field is initialized in order to make | |
| * sure the backward compatibility. | |
| * | |
| * @since 1.6 | |
| */ | |
| @java.io.Serial | |
| private void writeObject(ObjectOutputStream stream) throws IOException { | |
| if (zoneStrings == null) { | |
| zoneStrings = TimeZoneNameUtility.getZoneStrings(locale); | |
| } | |
| stream.defaultWriteObject(); | |
| } | |
| } |