make/jdk/src/classes/build/tools/tzdb/TzdbZoneRulesProvider.java

*** 1,7 ****
  /*
!  * Copyright (c) 2014, 2019, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2014, 2020, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 65,81 ****
              throw new ZoneRulesException("Unable to load TZDB time-zone rules", ex);
          }
      }
  
      public Set<String> getZoneIds() {
!         return new TreeSet(regionIds);
      }
  
      public Map<String, String> getAliasMap() {
          return links;
      }
  
      public ZoneRules getZoneRules(String zoneId) {
          Object obj = zones.get(zoneId);
          if (obj == null) {
              String zoneId0 = zoneId;
              if (links.containsKey(zoneId)) {
--- 65,82 ----
              throw new ZoneRulesException("Unable to load TZDB time-zone rules", ex);
          }
      }
  
      public Set<String> getZoneIds() {
!         return new TreeSet<String>(regionIds);
      }
  
      public Map<String, String> getAliasMap() {
          return links;
      }
  
+     @SuppressWarnings("unchecked")
      public ZoneRules getZoneRules(String zoneId) {
          Object obj = zones.get(zoneId);
          if (obj == null) {
              String zoneId0 = zoneId;
              if (links.containsKey(zoneId)) {