src/share/classes/javax/swing/plaf/synth/Region.java

*** 425,434 ****
--- 425,435 ----
       */
      public static final Region VIEWPORT = new Region("Viewport", false);
  
      private static Map<String, Region> getUItoRegionMap() {
          AppContext context = AppContext.getAppContext();
+         @SuppressWarnings("unchecked")
          Map<String, Region> map = (Map<String, Region>) context.get(UI_TO_REGION_MAP_KEY);
          if (map == null) {
              map = new HashMap<String, Region>();
              map.put("ArrowButtonUI", ARROW_BUTTON);
              map.put("ButtonUI", BUTTON);
*** 480,489 ****
--- 481,491 ----
          return map;
      }
  
      private static Map<Region, String> getLowerCaseNameMap() {
          AppContext context = AppContext.getAppContext();
+         @SuppressWarnings("unchecked")
          Map<Region, String> map = (Map<Region, String>) context.get(LOWER_CASE_NAME_MAP_KEY);
          if (map == null) {
              map = new HashMap<Region, String>();
              context.put(LOWER_CASE_NAME_MAP_KEY, map);
          }