src/java.base/share/classes/sun/util/locale/provider/LocaleProviderAdapter.java

*** 45,54 ****
--- 45,55 ----
  import java.util.spi.CurrencyNameProvider;
  import java.util.spi.LocaleNameProvider;
  import java.util.spi.LocaleServiceProvider;
  import java.util.spi.TimeZoneNameProvider;
  import sun.security.action.GetPropertyAction;
+ import sun.text.spi.JavaTimeDateTimePatternProvider;
  import sun.util.spi.CalendarProvider;
  
  /**
   * The LocaleProviderAdapter abstract class.
   *
*** 426,435 ****
--- 427,444 ----
       *
       * @return a CalendarProvider
       */
      public abstract CalendarProvider getCalendarProvider();
  
+     /**
+      * Returns a JavaTimeDateTimePatternProvider for this LocaleProviderAdapter,
+      * or null if no JavaTimeDateTimePatternProvider is available.
+      *
+      * @return a JavaTimeDateTimePatternProvider
+      */
+     public abstract JavaTimeDateTimePatternProvider getJavaTimeDateTimePatternProvider();
+ 
      public abstract LocaleResources getLocaleResources(Locale locale);
  
      public abstract Locale[] getAvailableLocales();
  
      private static final LocaleProviderAdapter NONEXISTENT_ADAPTER = new NonExistentAdapter();