8263202: Update Hebrew/Indonesian/Yiddish ISO 639 language codes to current

make/jdk/src/classes/build/tools/cldrconverter/Bundle.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2021, 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
@@ -156,13 +156,6 @@ String getID() {
         return id;
     }
 
-    String getJavaID() {
-        // Tweak ISO compatibility for bundle generation
-        return id.replaceFirst("^he", "iw")
-            .replaceFirst("^id", "in")
-            .replaceFirst("^yi", "ji");
-    }
-
     boolean isRoot() {
         return "root".equals(id);
     }

make/jdk/src/classes/build/tools/cldrconverter/CLDRConverter.java

@@ -536,7 +536,6 @@ private static void convertBundles(List<Bundle> bundles) throws Exception {
             Map<String, Object> targetMap = bundle.getTargetMap();
             EnumSet<Bundle.Type> bundleTypes = bundle.getBundleTypes();
             var id = bundle.getID();
-            var javaId = bundle.getJavaID();
 
             if (bundle.isRoot()) {
                 // Add DateTimePatternChars because CLDR no longer supports localized patterns.
@@ -548,31 +547,31 @@ private static void convertBundles(List<Bundle> bundles) throws Exception {
             if (bundleTypes.contains(Bundle.Type.LOCALENAMES)) {
                 Map<String, Object> localeNamesMap = extractLocaleNames(targetMap, id);
                 if (!localeNamesMap.isEmpty() || bundle.isRoot()) {
-                    bundleGenerator.generateBundle("util", "LocaleNames", javaId, true, localeNamesMap, BundleType.OPEN);
+                    bundleGenerator.generateBundle("util", "LocaleNames", id, true, localeNamesMap, BundleType.OPEN);
                 }
             }
             if (bundleTypes.contains(Bundle.Type.CURRENCYNAMES)) {
                 Map<String, Object> currencyNamesMap = extractCurrencyNames(targetMap, id, bundle.getCurrencies());
                 if (!currencyNamesMap.isEmpty() || bundle.isRoot()) {
-                    bundleGenerator.generateBundle("util", "CurrencyNames", javaId, true, currencyNamesMap, BundleType.OPEN);
+                    bundleGenerator.generateBundle("util", "CurrencyNames", id, true, currencyNamesMap, BundleType.OPEN);
                 }
             }
             if (bundleTypes.contains(Bundle.Type.TIMEZONENAMES)) {
                 Map<String, Object> zoneNamesMap = extractZoneNames(targetMap, id);
                 if (!zoneNamesMap.isEmpty() || bundle.isRoot()) {
-                    bundleGenerator.generateBundle("util", "TimeZoneNames", javaId, true, zoneNamesMap, BundleType.TIMEZONE);
+                    bundleGenerator.generateBundle("util", "TimeZoneNames", id, true, zoneNamesMap, BundleType.TIMEZONE);
                 }
             }
             if (bundleTypes.contains(Bundle.Type.CALENDARDATA)) {
                 Map<String, Object> calendarDataMap = extractCalendarData(targetMap, id);
                 if (!calendarDataMap.isEmpty() || bundle.isRoot()) {
-                    bundleGenerator.generateBundle("util", "CalendarData", javaId, true, calendarDataMap, BundleType.PLAIN);
+                    bundleGenerator.generateBundle("util", "CalendarData", id, true, calendarDataMap, BundleType.PLAIN);
                 }
             }
             if (bundleTypes.contains(Bundle.Type.FORMATDATA)) {
                 Map<String, Object> formatDataMap = extractFormatData(targetMap, id);
                 if (!formatDataMap.isEmpty() || bundle.isRoot()) {
-                    bundleGenerator.generateBundle("text", "FormatData", javaId, true, formatDataMap, BundleType.PLAIN);
+                    bundleGenerator.generateBundle("text", "FormatData", id, true, formatDataMap, BundleType.PLAIN);
                 }
             }
 

src/java.base/share/classes/java/util/Locale.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2021, 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
@@ -444,18 +444,26 @@
  * in <a href="#special_cases_constructor">Special Cases</a>, only
  * for the two cases th_TH_TH and ja_JP_JP.
  *
- * <h4>Legacy language codes</h4>
+ * <h4><a id="legacy_language_codes">Legacy language codes</a></h4>
  *
  * <p>Locale's constructor has always converted three language codes to
  * their earlier, obsoleted forms: {@code he} maps to {@code iw},
  * {@code yi} maps to {@code ji}, and {@code id} maps to
- * {@code in}.  This continues to be the case, in order to not break
- * backwards compatibility.
+ * {@code in}. Since Java SE 17, this is no longer the case. Each
+ * language maps to its new form; {@code iw} maps to {@code he}, {@code ji}
+ * maps to {@code yi}, and {@code in} maps to {@code id}.
+ *
+ * <p>For the backward compatible behavior, the system property
+ * {@systemProperty java.locale.useOldISOCodes} reverts the behavior
+ * back to prior to Java SE 17 one. If the system property is set
+ * to {@code true}, those three current language codes are mapped to their
+ * backward compatible forms.
  *
  * <p>The APIs added in 1.7 map between the old and new language codes,
- * maintaining the old codes internal to Locale (so that
- * {@code getLanguage} and {@code toString} reflect the old
- * code), but using the new codes in the BCP 47 language tag APIs (so
+ * maintaining the mapped codes internal to Locale (so that
+ * {@code getLanguage} and {@code toString} reflect the mapped
+ * code, which depends on the {@code java.locale.useOldISOCodes} system
+ * property), but using the new codes in the BCP 47 language tag APIs (so
  * that {@code toLanguageTag} reflects the new one). This
  * preserves the equivalence between Locales no matter which code or
  * API is used to construct them. Java's default resource bundle
@@ -720,13 +728,11 @@ private Locale(BaseLocale baseLocale, LocaleExtensions extensions) {
      * Construct a locale from language, country and variant.
      * This constructor normalizes the language value to lowercase and
      * the country value to uppercase.
-     * <p>
-     * <b>Note:</b>
+     * @implNote
      * <ul>
-     * <li>ISO 639 is not a stable standard; some of the language codes it defines
-     * (specifically "iw", "ji", and "in") have changed.  This constructor accepts both the
-     * old codes ("iw", "ji", and "in") and the new codes ("he", "yi", and "id"), but all other
-     * API on Locale will return only the OLD codes.
+     * <li>Obsolete ISO 639 codes ("iw", "ji", and "in") are mapped to
+     * their current forms. See <a href="#legacy_language_codes">Legacy language
+     * codes</a> for more information.
      * <li>For backward compatibility reasons, this constructor does not make
      * any syntactic checks on the input.
      * <li>The two cases ("ja", "JP", "JP") and ("th", "TH", "TH") are handled specially,
@@ -754,13 +760,11 @@ public Locale(String language, String country, String variant) {
      * Construct a locale from language and country.
      * This constructor normalizes the language value to lowercase and
      * the country value to uppercase.
-     * <p>
-     * <b>Note:</b>
+     * @implNote
      * <ul>
-     * <li>ISO 639 is not a stable standard; some of the language codes it defines
-     * (specifically "iw", "ji", and "in") have changed.  This constructor accepts both the
-     * old codes ("iw", "ji", and "in") and the new codes ("he", "yi", and "id"), but all other
-     * API on Locale will return only the OLD codes.
+     * <li>Obsolete ISO 639 codes ("iw", "ji", and "in") are mapped to
+     * their current forms. See <a href="#legacy_language_codes">Legacy language
+     * codes</a> for more information.
      * <li>For backward compatibility reasons, this constructor does not make
      * any syntactic checks on the input.
      * </ul>
@@ -779,13 +783,11 @@ public Locale(String language, String country) {
     /**
      * Construct a locale from a language code.
      * This constructor normalizes the language value to lowercase.
-     * <p>
-     * <b>Note:</b>
+     * @implNote
      * <ul>
-     * <li>ISO 639 is not a stable standard; some of the language codes it defines
-     * (specifically "iw", "ji", and "in") have changed.  This constructor accepts both the
-     * old codes ("iw", "ji", and "in") and the new codes ("he", "yi", and "id"), but all other
-     * API on Locale will return only the OLD codes.
+     * <li>Obsolete ISO 639 codes ("iw", "ji", and "in") are mapped to
+     * their current forms. See <a href="#legacy_language_codes">Legacy language
+     * codes</a> for more information.
      * <li>For backward compatibility reasons, this constructor does not make
      * any syntactic checks on the input.
      * </ul>
@@ -1208,19 +1210,10 @@ private static String[] getISO2Table(String table) {
     /**
      * Returns the language code of this Locale.
      *
-     * <p><b>Note:</b> ISO 639 is not a stable standard&mdash; some languages' codes have changed.
-     * Locale's constructor recognizes both the new and the old codes for the languages
-     * whose codes have changed, but this function always returns the old code.  If you
-     * want to check for a specific language whose code has changed, don't do
-     * <pre>
-     * if (locale.getLanguage().equals("he")) // BAD!
-     *    ...
-     * </pre>
-     * Instead, do
-     * <pre>
-     * if (locale.getLanguage().equals(new Locale("he").getLanguage()))
-     *    ...
-     * </pre>
+     * @implNote This method returns the new forms for the obsolete ISO 639
+     * codes ("iw", "ji", and "in"). See <a href="#legacy_language_codes">
+     * Legacy language codes</a> for more information.
+     *
      * @return The language code, or the empty string if none is defined.
      * @see #getDisplayLanguage
      */
@@ -1608,9 +1601,11 @@ public String toLanguageTag() {
      *
      * <li>The language code "und" is mapped to language "".
      *
-     * <li>The language codes "he", "yi", and "id" are mapped to "iw",
-     * "ji", and "in" respectively. (This is the same canonicalization
-     * that's done in Locale's constructors.)
+     * <li>The language codes "iw", "ji", and "in" are mapped to "he",
+     * "yi", and "id" respectively. (This is the same canonicalization
+     * that's done in Locale's constructors.) See
+     * <a href="#legacy_language_codes">Legacy language codes</a>
+     * for more information.
      *
      * <li>The portion of a private use subtag prefixed by "lvariant",
      * if any, is removed and appended to the variant field in the
@@ -2397,17 +2392,9 @@ private Object readResolve() throws java.io.ObjectStreamException {
 
     private static String convertOldISOCodes(String language) {
         // we accept both the old and the new ISO codes for the languages whose ISO
-        // codes have changed, but we always store the OLD code, for backward compatibility
-        language = LocaleUtils.toLowerString(language).intern();
-        if (language == "he") {
-            return "iw";
-        } else if (language == "yi") {
-            return "ji";
-        } else if (language == "id") {
-            return "in";
-        } else {
-            return language;
-        }
+        // codes have changed, but we always store the NEW code, unless the property
+        // java.locale.useOldISOCodes is set to "true"
+        return BaseLocale.convertOldISOCodes(LocaleUtils.toLowerString(language).intern());
     }
 
     private static LocaleExtensions getCompatibilityExtensions(String language,

src/java.base/share/classes/java/util/ResourceBundle.java

@@ -72,6 +72,8 @@
 import sun.security.action.GetPropertyAction;
 import sun.util.locale.BaseLocale;
 import sun.util.locale.LocaleObjectCache;
+import sun.util.resources.Bundles;
+
 import static sun.security.util.SecurityConstants.GET_CLASSLOADER_PERMISSION;
 
 
@@ -3098,6 +3100,12 @@ public Locale getFallbackLocale(String baseName, Locale locale) {
          * nor {@code "java.properties"}, an
          * {@code IllegalArgumentException} is thrown.</li>
          *
+         * <li>If the {@code locale}'s language is one of the
+         * <a href="./Locale.html#legacy_language_codes">Legacy language
+         * codes</a>, either old or new, then repeat the loading process
+         * if needed, with the bundle name with the other language.
+         * For example, "iw" for "he" and vice versa.
+         *
          * </ul>
          *
          * @param baseName
@@ -3152,6 +3160,21 @@ public ResourceBundle newBundle(String baseName, Locale locale, String format,
              * that is visible to the given loader and accessible to the given caller.
              */
             String bundleName = toBundleName(baseName, locale);
+            var bundle = newBundle0(bundleName, format, loader, reload);
+            if (bundle == null) {
+                // Try loading legacy ISO language's other bundles
+                var otherBundleName = Bundles.toOtherBundleName(baseName, bundleName, locale);
+                if (!bundleName.equals(otherBundleName)) {
+                    bundle = newBundle0(otherBundleName, format, loader, reload);
+                }
+            }
+
+            return bundle;
+        }
+
+        private ResourceBundle newBundle0(String bundleName, String format,
+                    ClassLoader loader, boolean reload)
+                    throws IllegalAccessException, InstantiationException, IOException {
             ResourceBundle bundle = null;
             if (format.equals("java.class")) {
                 try {

src/java.base/share/classes/java/util/spi/AbstractResourceBundleProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2021, 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
@@ -27,6 +27,7 @@
 
 import jdk.internal.access.JavaUtilResourceBundleAccess;
 import jdk.internal.access.SharedSecrets;
+import sun.util.resources.Bundles;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -187,6 +188,17 @@ protected String toBundleName(String baseName, Locale locale) {
     public ResourceBundle getBundle(String baseName, Locale locale) {
         Module module = this.getClass().getModule();
         String bundleName = toBundleName(baseName, locale);
+        var bundle = getBundle0(module, bundleName);
+        if (bundle == null) {
+            var otherBundleName = Bundles.toOtherBundleName(baseName, bundleName, locale);
+            if (!bundleName.equals(otherBundleName)) {
+                bundle = getBundle0(module, Bundles.toOtherBundleName(baseName, bundleName, locale));
+            }
+        }
+        return bundle;
+    }
+
+    private ResourceBundle getBundle0(Module module, String bundleName) {
         ResourceBundle bundle = null;
 
         for (String format : formats) {

src/java.base/share/classes/sun/util/locale/BaseLocale.java

@@ -34,6 +34,7 @@
 
 import jdk.internal.misc.CDS;
 import jdk.internal.vm.annotation.Stable;
+import sun.security.action.GetPropertyAction;
 
 import java.lang.ref.SoftReference;
 import java.util.StringJoiner;
@@ -98,6 +99,13 @@ public final class BaseLocale {
 
     private volatile int hash;
 
+    /**
+     * Boolean for the old ISO language code compatibility.
+     */
+    private static final boolean OLD_ISO_CODES = GetPropertyAction.privilegedGetProperties()
+            .getProperty("java.locale.useOldISOCodes", "false")
+            .equalsIgnoreCase("true");
+
     // This method must be called with normalize = false only when creating the
     // Locale.* constants and non-normalized BaseLocale$Keys used for lookup.
     private BaseLocale(String language, String script, String region, String variant,
@@ -153,19 +161,22 @@ public static BaseLocale getInstance(String language, String script,
 
         // JDK uses deprecated ISO639.1 language codes for he, yi and id
         if (!language.isEmpty()) {
-            if (language.equals("he")) {
-                language = "iw";
-            } else if (language.equals("yi")) {
-                language = "ji";
-            } else if (language.equals("id")) {
-                language = "in";
-            }
+            language = convertOldISOCodes(language);
         }
 
         Key key = new Key(language, script, region, variant, false);
         return Cache.CACHE.get(key);
     }
 
+    public static String convertOldISOCodes(String language) {
+        return switch (language) {
+            case "he", "iw" -> OLD_ISO_CODES ? "iw" : "he";
+            case "id", "in" -> OLD_ISO_CODES ? "in" : "id";
+            case "yi", "ji" -> OLD_ISO_CODES ? "ji" : "yi";
+            default -> language;
+        };
+    }
+
     public String getLanguage() {
         return language;
     }