import sun.util.resources.TimeZoneNamesBundle;

 * @author Masayoshi Okutsu

    private static ConcurrentHashMap<Locale, SoftReference<TimeZoneNamesBundle>> cachedBundles =

        // If the provider is a TimeZoneNameProviderImpl, call its getZoneStrings

        // in order to avoid per-ID retrieval.

        LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(TimeZoneNameProvider.class, locale);

        TimeZoneNameProvider provider = adapter.getTimeZoneNameProvider();

        if (provider instanceof TimeZoneNameProviderImpl) {

            return ((TimeZoneNameProviderImpl)provider).getZoneStrings(locale);

        }

        // Performs per-ID retrieval.

        for (String key : rb.keySet()) {

            String[] names = retrieveDisplayNamesImpl(key, locale);

        return retrieveDisplayNamesImpl(id, locale);

    }

    /**

     * Retrieves a generic time zone display name for a time zone ID.

     *

     * @param id     time zone ID

     * @param style  TimeZone.LONG or TimeZone.SHORT

     * @param locale desired Locale

     * @return the requested generic time zone display name, or null if not found.

     */

    public static String retrieveGenericDisplayName(String id, int style, Locale locale) {

        return pool.getLocalizedObject(TimeZoneNameGetter.INSTANCE, locale, "generic", style, id);

    /**

     * Retrieves a standard or daylight-saving time name for the given time zone ID.

     *

     * @param id       time zone ID

     * @param daylight true for a daylight saving time name, or false for a standard time name

     * @param style    TimeZone.LONG or TimeZone.SHORT

     * @param locale   desired Locale

     * @return the requested time zone name, or null if not found.

     */

    public static String retrieveDisplayName(String id, boolean daylight, int style, Locale locale) {

        LocaleServiceProviderPool pool =

            LocaleServiceProviderPool.getPool(TimeZoneNameProvider.class);

        return pool.getLocalizedObject(TimeZoneNameGetter.INSTANCE, locale, daylight ? "dst" : "std", style, id);

    }

    private static String[] retrieveDisplayNamesImpl(String id, Locale locale) {

        LocaleServiceProviderPool pool =

            LocaleServiceProviderPool.getPool(TimeZoneNameProvider.class);

        return pool.getLocalizedObject(TimeZoneNameArrayGetter.INSTANCE, locale, id);

    }

    private static TimeZoneNamesBundle getBundle(Locale locale) {

        TimeZoneNamesBundle rb;

        SoftReference<TimeZoneNamesBundle> data = cachedBundles.get(locale);

    private static class TimeZoneNameArrayGetter

        private static final TimeZoneNameArrayGetter INSTANCE =

            new TimeZoneNameArrayGetter();

                                  Locale locale,

                                  String requestID,

                                  Object... params) {

                    String canonicalID = aliases.get(requestID);

                    if (canonicalID != null) {

                        names = buildZoneStrings(timeZoneNameProvider, locale, canonicalID);

                                   canonicalID == null ? requestID : canonicalID, aliases);

                                               Map<String, String> aliases) {

                for (Map.Entry<String, String> entry : aliases.entrySet()) {

                        }

                        names = examineAliases(tznp, locale, alias, aliases);

                        if (names != null) {

                            return names;

                                                 Locale locale, String id) {

    private static class TimeZoneNameGetter

        implements LocaleServiceProviderPool.LocalizedObjectGetter<TimeZoneNameProvider,

                                                                   String> {

        private static final TimeZoneNameGetter INSTANCE =

            new TimeZoneNameGetter();

        @Override

        public String getObject(TimeZoneNameProvider timeZoneNameProvider,

                                Locale locale,

                                String requestID,

                                Object... params) {

            assert params.length == 2;

            int style = (int) params[0];

            String tzid = (String) params[1];

            String value = getName(timeZoneNameProvider, locale, requestID, style, tzid);

            if (value == null) {

                Map<String, String> aliases = ZoneInfo.getAliasTable();

                if (aliases != null) {

                    String canonicalID = aliases.get(tzid);

                    if (canonicalID != null) {

                        value = getName(timeZoneNameProvider, locale, requestID, style, canonicalID);

                    }

                    if (value == null) {

                        value = examineAliases(timeZoneNameProvider, locale, requestID,

                                     canonicalID != null ? canonicalID : tzid, style, aliases);

                    }

                }

            }

            return value;

        }

        private static String examineAliases(TimeZoneNameProvider tznp, Locale locale,

                                             String requestID, String tzid, int style,

                                             Map<String, String> aliases) {

            if (aliases.containsValue(tzid)) {

                for (Map.Entry<String, String> entry : aliases.entrySet()) {

                    if (entry.getValue().equals(tzid)) {

                        String alias = entry.getKey();

                        String name = getName(tznp, locale, requestID, style, alias);

                        if (name != null) {

                            return name;

                        }

                        name = examineAliases(tznp, locale, requestID, alias, style, aliases);

                        if (name != null) {

                            return name;

                        }

                    }

                }

            }

            return null;

        }

        private static String getName(TimeZoneNameProvider timeZoneNameProvider,

                                      Locale locale, String requestID, int style, String tzid) {

            String value = null;

            switch (requestID) {

            case "std":

                value = timeZoneNameProvider.getDisplayName(tzid, false, style, locale);

                break;

            case "dst":

                value = timeZoneNameProvider.getDisplayName(tzid, true, style, locale);

                break;

            case "generic":

                value = timeZoneNameProvider.getGenericDisplayName(tzid, style, locale);

                break;

            }

            return value;

        }

    }