Java Code Examples for sun.util.locale.provider.LocaleProviderAdapter#getAdapter()

static void adapterTest(String expected, String lang, String ctry) {
    Locale testLocale = new Locale(lang, ctry);
    LocaleProviderAdapter ldaExpected =
        LocaleProviderAdapter.forType(LocaleProviderAdapter.Type.valueOf(expected));
    if (!ldaExpected.getDateFormatProvider().isSupportedLocale(testLocale)) {
        System.out.println("test locale: "+testLocale+" is not supported by the expected provider: "+ldaExpected+". Ignoring the test.");
        return;
    }
    String preference = System.getProperty("java.locale.providers", "");
    LocaleProviderAdapter lda = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, testLocale);
    LocaleProviderAdapter.Type type = lda.getAdapterType();
    System.out.printf("testLocale: %s, got: %s, expected: %s\n", testLocale, type, expected);
    if (!type.toString().equals(expected)) {
        throw new RuntimeException("Returned locale data adapter is not correct.");
    }
}
 

static void adapterTest(String expected, String lang, String ctry) {
    Locale testLocale = new Locale(lang, ctry);
    LocaleProviderAdapter ldaExpected =
        LocaleProviderAdapter.forType(LocaleProviderAdapter.Type.valueOf(expected));
    if (!ldaExpected.getDateFormatProvider().isSupportedLocale(testLocale)) {
        System.out.println("test locale: "+testLocale+" is not supported by the expected provider: "+ldaExpected+". Ignoring the test.");
        return;
    }
    String preference = System.getProperty("java.locale.providers", "");
    LocaleProviderAdapter lda = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, testLocale);
    LocaleProviderAdapter.Type type = lda.getAdapterType();
    System.out.printf("testLocale: %s, got: %s, expected: %s\n", testLocale, type, expected);
    if (!type.toString().equals(expected)) {
        throw new RuntimeException("Returned locale data adapter is not correct.");
    }
}
 

/**
 * Creates a DateFormat with the given time and/or date style in the given
 * locale.
 * @param timeStyle a value from 0 to 3 indicating the time format,
 * ignored if flags is 2
 * @param dateStyle a value from 0 to 3 indicating the time format,
 * ignored if flags is 1
 * @param flags either 1 for a time format, 2 for a date format,
 * or 3 for a date/time format
 * @param loc the locale for the format
 */
private static DateFormat get(int timeStyle, int dateStyle,
                              int flags, Locale loc) {
    if ((flags & 1) != 0) {
        if (timeStyle < 0 || timeStyle > 3) {
            throw new IllegalArgumentException("Illegal time style " + timeStyle);
        }
    } else {
        timeStyle = -1;
    }
    if ((flags & 2) != 0) {
        if (dateStyle < 0 || dateStyle > 3) {
            throw new IllegalArgumentException("Illegal date style " + dateStyle);
        }
    } else {
        dateStyle = -1;
    }

    LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, loc);
    DateFormat dateFormat = get(adapter, timeStyle, dateStyle, loc);
    if (dateFormat == null) {
        dateFormat = get(LocaleProviderAdapter.forJRE(), timeStyle, dateStyle, loc);
    }
    return dateFormat;
}
 

private static NumberFormat getInstance(Locale desiredLocale,
                                       int choice) {
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class,
                                               desiredLocale);
    NumberFormat numberFormat = getInstance(adapter, desiredLocale, choice);
    if (numberFormat == null) {
        numberFormat = getInstance(LocaleProviderAdapter.forJRE(),
                                   desiredLocale, choice);
    }
    return numberFormat;
}
 

private static NumberFormat getInstance(Locale desiredLocale,
                                       int choice) {
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class,
                                               desiredLocale);
    NumberFormat numberFormat = getInstance(adapter, desiredLocale, choice);
    if (numberFormat == null) {
        numberFormat = getInstance(LocaleProviderAdapter.forJRE(),
                                   desiredLocale, choice);
    }
    return numberFormat;
}
 

private static String getDefaultPattern(Locale locale) {
    // Get the pattern for the default locale.
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class,
                                               locale);
    LocaleResources lr = adapter.getLocaleResources(locale);
    if (lr == null) {
        lr = LocaleProviderAdapter.forJRE().getLocaleResources(locale);
    }
    String[] all = lr.getNumberPatterns();
    return all[0];
}
 

private static NumberFormat getInstance(Locale desiredLocale,
                                       int choice) {
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class,
                                               desiredLocale);
    NumberFormat numberFormat = getInstance(adapter, desiredLocale, choice);
    if (numberFormat == null) {
        numberFormat = getInstance(LocaleProviderAdapter.forJRE(),
                                   desiredLocale, choice);
    }
    return numberFormat;
}
 

private static String getDefaultPattern(Locale locale) {
    // Get the pattern for the default locale.
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class,
                                               locale);
    LocaleResources lr = adapter.getLocaleResources(locale);
    if (lr == null) {
        lr = LocaleProviderAdapter.forJRE().getLocaleResources(locale);
    }
    String[] all = lr.getNumberPatterns();
    return all[0];
}
 

private static BreakIterator createBreakInstance(Locale locale,
                                                 int type) {
    LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(BreakIteratorProvider.class, locale);
    BreakIterator iterator = createBreakInstance(adapter, locale, type);
    if (iterator == null) {
        iterator = createBreakInstance(LocaleProviderAdapter.forJRE(), locale, type);
    }
    return iterator;
}
 

private static NumberFormat getInstance(Locale desiredLocale,
                                       int choice) {
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(NumberFormatProvider.class,
                                               desiredLocale);
    NumberFormat numberFormat = getInstance(adapter, desiredLocale, choice);
    if (numberFormat == null) {
        numberFormat = getInstance(LocaleProviderAdapter.forJRE(),
                                   desiredLocale, choice);
    }
    return numberFormat;
}
 

private static BreakIterator createBreakInstance(Locale locale,
                                                 int type) {
    LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(BreakIteratorProvider.class, locale);
    BreakIterator iterator = createBreakInstance(adapter, locale, type);
    if (iterator == null) {
        iterator = createBreakInstance(LocaleProviderAdapter.forJRE(), locale, type);
    }
    return iterator;
}
 

static void bug7198834Test() {
    LocaleProviderAdapter lda = LocaleProviderAdapter.getAdapter(DateFormatProvider.class, Locale.US);
    LocaleProviderAdapter.Type type = lda.getAdapterType();
    if (type == LocaleProviderAdapter.Type.HOST && System.getProperty("os.name").startsWith("Windows")) {
        DateFormat df = DateFormat.getDateInstance(DateFormat.FULL, Locale.US);
        String date = df.format(new Date());
        if (date.charAt(date.length()-1) == ' ') {
            throw new RuntimeException("Windows Host Locale Provider returns a trailing space.");
        }
    } else {
        System.out.println("Windows HOST locale adapter not found. Ignoring this test.");
    }
}
 

static void bug8010666Test() {
    if (System.getProperty("os.name").startsWith("Windows")) {
        NumberFormat nf = NumberFormat.getInstance(Locale.US);
        try {
            double ver = nf.parse(System.getProperty("os.version"))
                           .doubleValue();
            System.out.printf("Windows version: %.1f\n", ver);
            if (ver >= 6.0) {
                LocaleProviderAdapter lda =
                    LocaleProviderAdapter.getAdapter(
                        LocaleNameProvider.class, Locale.ENGLISH);
                LocaleProviderAdapter.Type type = lda.getAdapterType();
                if (type == LocaleProviderAdapter.Type.HOST) {
                    LocaleNameProvider lnp = lda.getLocaleNameProvider();
                    Locale mkmk = Locale.forLanguageTag("mk-MK");
                    String result = mkmk.getDisplayLanguage(Locale.ENGLISH);
                    String hostResult =
                        lnp.getDisplayLanguage(mkmk.getLanguage(),
                                               Locale.ENGLISH);
                    System.out.printf("  Display language name for" +
                        " (mk_MK): result(HOST): \"%s\", returned: \"%s\"\n",
                        hostResult, result);
                    if (result == null ||
                        hostResult != null &&
                        !result.equals(hostResult)) {
                        throw new RuntimeException("Display language name" +
                            " mismatch for \"mk\". Returned name was" +
                            " \"" + result + "\", result(HOST): \"" +
                            hostResult + "\"");
                    }
                    result = Locale.US.getDisplayLanguage(Locale.ENGLISH);
                    hostResult =
                        lnp.getDisplayLanguage(Locale.US.getLanguage(),
                                               Locale.ENGLISH);
                    System.out.printf("  Display language name for" +
                        " (en_US): result(HOST): \"%s\", returned: \"%s\"\n",
                        hostResult, result);
                    if (result == null ||
                        hostResult != null &&
                        !result.equals(hostResult)) {
                        throw new RuntimeException("Display language name" +
                            " mismatch for \"en\". Returned name was" +
                            " \"" + result + "\", result(HOST): \"" +
                            hostResult + "\"");
                    }
                    if (ver >= 6.1) {
                        result = Locale.US.getDisplayCountry(Locale.ENGLISH);
                        hostResult = lnp.getDisplayCountry(
                            Locale.US.getCountry(), Locale.ENGLISH);
                        System.out.printf("  Display country name for" +
                            " (en_US): result(HOST): \"%s\", returned: \"%s\"\n",
                            hostResult, result);
                        if (result == null ||
                            hostResult != null &&
                            !result.equals(hostResult)) {
                            throw new RuntimeException("Display country name" +
                                " mismatch for \"US\". Returned name was" +
                                " \"" + result + "\", result(HOST): \"" +
                                hostResult + "\"");
                        }
                    }
                } else {
                    throw new RuntimeException("Windows Host" +
                        " LocaleProviderAdapter was not selected for" +
                        " English locale.");
                }
            }
        } catch (ParseException pe) {
            throw new RuntimeException("Parsing Windows version failed: "+pe.toString());
        }
    }
}
 

static void bug8010666Test() {
    if (System.getProperty("os.name").startsWith("Windows")) {
        NumberFormat nf = NumberFormat.getInstance(Locale.US);
        try {
            double ver = nf.parse(System.getProperty("os.version"))
                           .doubleValue();
            System.out.printf("Windows version: %.1f\n", ver);
            if (ver >= 6.0) {
                LocaleProviderAdapter lda =
                    LocaleProviderAdapter.getAdapter(
                        LocaleNameProvider.class, Locale.ENGLISH);
                LocaleProviderAdapter.Type type = lda.getAdapterType();
                if (type == LocaleProviderAdapter.Type.HOST) {
                    LocaleNameProvider lnp = lda.getLocaleNameProvider();
                    Locale mkmk = Locale.forLanguageTag("mk-MK");
                    String result = mkmk.getDisplayLanguage(Locale.ENGLISH);
                    String hostResult =
                        lnp.getDisplayLanguage(mkmk.getLanguage(),
                                               Locale.ENGLISH);
                    System.out.printf("  Display language name for" +
                        " (mk_MK): result(HOST): \"%s\", returned: \"%s\"\n",
                        hostResult, result);
                    if (result == null ||
                        hostResult != null &&
                        !result.equals(hostResult)) {
                        throw new RuntimeException("Display language name" +
                            " mismatch for \"mk\". Returned name was" +
                            " \"" + result + "\", result(HOST): \"" +
                            hostResult + "\"");
                    }
                    result = Locale.US.getDisplayLanguage(Locale.ENGLISH);
                    hostResult =
                        lnp.getDisplayLanguage(Locale.US.getLanguage(),
                                               Locale.ENGLISH);
                    System.out.printf("  Display language name for" +
                        " (en_US): result(HOST): \"%s\", returned: \"%s\"\n",
                        hostResult, result);
                    if (result == null ||
                        hostResult != null &&
                        !result.equals(hostResult)) {
                        throw new RuntimeException("Display language name" +
                            " mismatch for \"en\". Returned name was" +
                            " \"" + result + "\", result(HOST): \"" +
                            hostResult + "\"");
                    }
                    if (ver >= 6.1) {
                        result = Locale.US.getDisplayCountry(Locale.ENGLISH);
                        hostResult = lnp.getDisplayCountry(
                            Locale.US.getCountry(), Locale.ENGLISH);
                        System.out.printf("  Display country name for" +
                            " (en_US): result(HOST): \"%s\", returned: \"%s\"\n",
                            hostResult, result);
                        if (result == null ||
                            hostResult != null &&
                            !result.equals(hostResult)) {
                            throw new RuntimeException("Display country name" +
                                " mismatch for \"US\". Returned name was" +
                                " \"" + result + "\", result(HOST): \"" +
                                hostResult + "\"");
                        }
                    }
                } else {
                    throw new RuntimeException("Windows Host" +
                        " LocaleProviderAdapter was not selected for" +
                        " English locale.");
                }
            }
        } catch (ParseException pe) {
            throw new RuntimeException("Parsing Windows version failed: "+pe.toString());
        }
    }
}
 

static void bug8010666Test() {
    if (System.getProperty("os.name").startsWith("Windows")) {
        NumberFormat nf = NumberFormat.getInstance(Locale.US);
        try {
            double ver = nf.parse(System.getProperty("os.version"))
                           .doubleValue();
            System.out.printf("Windows version: %.1f\n", ver);
            if (ver >= 6.0) {
                LocaleProviderAdapter lda =
                    LocaleProviderAdapter.getAdapter(
                        LocaleNameProvider.class, Locale.ENGLISH);
                LocaleProviderAdapter.Type type = lda.getAdapterType();
                if (type == LocaleProviderAdapter.Type.HOST) {
                    LocaleNameProvider lnp = lda.getLocaleNameProvider();
                    Locale mkmk = Locale.forLanguageTag("mk-MK");
                    String result = mkmk.getDisplayLanguage(Locale.ENGLISH);
                    String hostResult =
                        lnp.getDisplayLanguage(mkmk.getLanguage(),
                                               Locale.ENGLISH);
                    System.out.printf("  Display language name for" +
                        " (mk_MK): result(HOST): \"%s\", returned: \"%s\"\n",
                        hostResult, result);
                    if (result == null ||
                        hostResult != null &&
                        !result.equals(hostResult)) {
                        throw new RuntimeException("Display language name" +
                            " mismatch for \"mk\". Returned name was" +
                            " \"" + result + "\", result(HOST): \"" +
                            hostResult + "\"");
                    }
                    result = Locale.US.getDisplayLanguage(Locale.ENGLISH);
                    hostResult =
                        lnp.getDisplayLanguage(Locale.US.getLanguage(),
                                               Locale.ENGLISH);
                    System.out.printf("  Display language name for" +
                        " (en_US): result(HOST): \"%s\", returned: \"%s\"\n",
                        hostResult, result);
                    if (result == null ||
                        hostResult != null &&
                        !result.equals(hostResult)) {
                        throw new RuntimeException("Display language name" +
                            " mismatch for \"en\". Returned name was" +
                            " \"" + result + "\", result(HOST): \"" +
                            hostResult + "\"");
                    }
                    if (ver >= 6.1) {
                        result = Locale.US.getDisplayCountry(Locale.ENGLISH);
                        hostResult = lnp.getDisplayCountry(
                            Locale.US.getCountry(), Locale.ENGLISH);
                        System.out.printf("  Display country name for" +
                            " (en_US): result(HOST): \"%s\", returned: \"%s\"\n",
                            hostResult, result);
                        if (result == null ||
                            hostResult != null &&
                            !result.equals(hostResult)) {
                            throw new RuntimeException("Display country name" +
                                " mismatch for \"US\". Returned name was" +
                                " \"" + result + "\", result(HOST): \"" +
                                hostResult + "\"");
                        }
                    }
                } else {
                    throw new RuntimeException("Windows Host" +
                        " LocaleProviderAdapter was not selected for" +
                        " English locale.");
                }
            }
        } catch (ParseException pe) {
            throw new RuntimeException("Parsing Windows version failed: "+pe.toString());
        }
    }
}
 

private void initializeData(Locale desiredLocale) {
    locale = desiredLocale;

    // Copy values of a cached instance if any.
    SoftReference<DateFormatSymbols> ref = cachedInstances.get(locale);
    DateFormatSymbols dfs;
    if (ref != null && (dfs = ref.get()) != null) {
        copyMembers(dfs, this);
        return;
    }

    // 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);

    // JRE and CLDR use different keys
    // JRE: Eras, short.Eras and narrow.Eras
    // CLDR: long.Eras, Eras and narrow.Eras
    if (resource.containsKey("Eras")) {
        eras = resource.getStringArray("Eras");
    } else if (resource.containsKey("long.Eras")) {
        eras = resource.getStringArray("long.Eras");
    } else if (resource.containsKey("short.Eras")) {
        eras = resource.getStringArray("short.Eras");
    }
    months = resource.getStringArray("MonthNames");
    shortMonths = resource.getStringArray("MonthAbbreviations");
    ampms = resource.getStringArray("AmPmMarkers");
    localPatternChars = resource.getString("DateTimePatternChars");

    // Day of week names are stored in a 1-based array.
    weekdays = toOneBasedArray(resource.getStringArray("DayNames"));
    shortWeekdays = toOneBasedArray(resource.getStringArray("DayAbbreviations"));

    // Put a clone in the cache
    ref = new SoftReference<>((DateFormatSymbols)this.clone());
    SoftReference<DateFormatSymbols> x = cachedInstances.putIfAbsent(locale, ref);
    if (x != null) {
        DateFormatSymbols y = x.get();
        if (y == null) {
            // Replace the empty SoftReference with ref.
            cachedInstances.put(locale, ref);
        }
    }
}
 

/**
 * 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;
            }
        }
        // If the bundle's locale isn't the target locale, put another cache
        // entry for the bundle's locale.
        Locale bundleLocale = resource.getLocale();
        if (!bundleLocale.equals(locale)) {
            SoftReference<DateFormatSymbols> z
                = cachedInstances.putIfAbsent(bundleLocale, ref);
            if (z != null && z.get() == null) {
                cachedInstances.replace(bundleLocale, z, ref);
            }
        }
    }

    // Copy the field values from dfs to this instance.
    copyMembers(dfs, this);
}
 

/**
 * Gets the <code>DecimalFormatSymbols</code> instance for the specified
 * locale.  This method provides access to <code>DecimalFormatSymbols</code>
 * instances for locales supported by the Java runtime itself as well
 * as for those supported by installed
 * {@link java.text.spi.DecimalFormatSymbolsProvider
 * DecimalFormatSymbolsProvider} implementations.
 * If the specified locale contains the {@link java.util.Locale#UNICODE_LOCALE_EXTENSION}
 * for the numbering system, the instance is initialized with the specified numbering
 * system if the JRE implementation supports it. For example,
 * <pre>
 * NumberFormat.getNumberInstance(Locale.forLanguageTag("th-TH-u-nu-thai"))
 * </pre>
 * This may return a {@code NumberFormat} instance with the Thai numbering system,
 * instead of the Latin numbering system.
 *
 * @param locale the desired locale.
 * @return a <code>DecimalFormatSymbols</code> instance.
 * @exception NullPointerException if <code>locale</code> is null
 * @since 1.6
 */
public static final DecimalFormatSymbols getInstance(Locale locale) {
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(DecimalFormatSymbolsProvider.class, locale);
    DecimalFormatSymbolsProvider provider = adapter.getDecimalFormatSymbolsProvider();
    DecimalFormatSymbols dfsyms = provider.getInstance(locale);
    if (dfsyms == null) {
        provider = LocaleProviderAdapter.forJRE().getDecimalFormatSymbolsProvider();
        dfsyms = provider.getInstance(locale);
    }
    return dfsyms;
}
 

/**
 * Gets the <code>DecimalFormatSymbols</code> instance for the specified
 * locale.  This method provides access to <code>DecimalFormatSymbols</code>
 * instances for locales supported by the Java runtime itself as well
 * as for those supported by installed
 * {@link java.text.spi.DecimalFormatSymbolsProvider
 * DecimalFormatSymbolsProvider} implementations.
 * If the specified locale contains the {@link java.util.Locale#UNICODE_LOCALE_EXTENSION}
 * for the numbering system, the instance is initialized with the specified numbering
 * system if the JRE implementation supports it. For example,
 * <pre>
 * NumberFormat.getNumberInstance(Locale.forLanguageTag("th-TH-u-nu-thai"))
 * </pre>
 * This may return a {@code NumberFormat} instance with the Thai numbering system,
 * instead of the Latin numbering system.
 *
 * @param locale the desired locale.
 * @return a <code>DecimalFormatSymbols</code> instance.
 * @exception NullPointerException if <code>locale</code> is null
 * @since 1.6
 */
public static final DecimalFormatSymbols getInstance(Locale locale) {
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(DecimalFormatSymbolsProvider.class, locale);
    DecimalFormatSymbolsProvider provider = adapter.getDecimalFormatSymbolsProvider();
    DecimalFormatSymbols dfsyms = provider.getInstance(locale);
    if (dfsyms == null) {
        provider = LocaleProviderAdapter.forJRE().getDecimalFormatSymbolsProvider();
        dfsyms = provider.getInstance(locale);
    }
    return dfsyms;
}
 

/**
 * Gets the <code>DecimalFormatSymbols</code> instance for the specified
 * locale.  This method provides access to <code>DecimalFormatSymbols</code>
 * instances for locales supported by the Java runtime itself as well
 * as for those supported by installed
 * {@link java.text.spi.DecimalFormatSymbolsProvider
 * DecimalFormatSymbolsProvider} implementations.
 * If the specified locale contains the {@link java.util.Locale#UNICODE_LOCALE_EXTENSION}
 * for the numbering system, the instance is initialized with the specified numbering
 * system if the JRE implementation supports it. For example,
 * <pre>
 * NumberFormat.getNumberInstance(Locale.forLanguageTag("th-TH-u-nu-thai"))
 * </pre>
 * This may return a {@code NumberFormat} instance with the Thai numbering system,
 * instead of the Latin numbering system.
 *
 * @param locale the desired locale.
 * @return a <code>DecimalFormatSymbols</code> instance.
 * @exception NullPointerException if <code>locale</code> is null
 * @since 1.6
 */
public static final DecimalFormatSymbols getInstance(Locale locale) {
    LocaleProviderAdapter adapter;
    adapter = LocaleProviderAdapter.getAdapter(DecimalFormatSymbolsProvider.class, locale);
    DecimalFormatSymbolsProvider provider = adapter.getDecimalFormatSymbolsProvider();
    DecimalFormatSymbols dfsyms = provider.getInstance(locale);
    if (dfsyms == null) {
        provider = LocaleProviderAdapter.forJRE().getDecimalFormatSymbolsProvider();
        dfsyms = provider.getInstance(locale);
    }
    return dfsyms;
}