src/share/classes/sun/util/locale/provider/FallbackLocaleProviderAdapter.java

rev 7121 : imported patch 8013903

*** 23,42 ****
--- 23,73 ----
   * questions.
   */
  
  package sun.util.locale.provider;
  
+ import java.util.Collections;
+ import java.util.HashSet;
+ import java.util.Locale;
+ import java.util.Set;
+ 
  /**
   * FallbackProviderAdapter implementation.
   *
   * @author Naoto Sato
   */
  public class FallbackLocaleProviderAdapter extends JRELocaleProviderAdapter {
  
      /**
+      * Supported language tag set.
+      */
+     private static final Set<String> rootTagSet;
+     static {
+         Set<String> tmp = new HashSet<>();
+         tmp.add(Locale.ROOT.toLanguageTag());
+         rootTagSet = Collections.unmodifiableSet(tmp);
+     }
+ 
+     /**
+      * Fallback provider only provides the ROOT locale data.
+      */
+     private final LocaleResources rootLocaleResources =
+         new LocaleResources(this, Locale.ROOT);
+ 
+     /**
       * Returns the type of this LocaleProviderAdapter
       */
      @Override
      public LocaleProviderAdapter.Type getAdapterType() {
          return Type.FALLBACK;
      }
+ 
+     @Override
+     public LocaleResources getLocaleResources(Locale locale) {
+         return rootLocaleResources;
+     }
+ 
+     @Override
+     protected Set<String> createLanguageTagSet(String category) {
+         return rootTagSet;
+     }
  }