8008161: Regression: j.u.TimeZone.getAvailableIDs(rawOffset) returns non-sorted list

Summary: to return a sorted list
Reviewed-by: lancea, naoto

src/share/classes/sun/util/calendar/ZoneInfoFile.java

@@ -92,7 +92,13 @@ public final class ZoneInfoFile {
                 ids.add(id);
             }
         }
-        return ids.toArray(new String[ids.size()]);
+        // It appears the "zi" implementation returns the
+        // sorted list, though the specification does not
+        // specify it. Keep the same behavior for better
+        // compatibility.
+        String[] list = ids.toArray(new String[ids.size()]);
+        Arrays.sort(list);
+        return list;
     }
 
     public static ZoneInfo getZoneInfo(String zoneId) {

test/sun/util/calendar/zi/TestZoneInfo310.java

@@ -23,7 +23,7 @@
 
 /*
  *@test
- *@bug 8007572
+ *@bug 8007572 8008161
  *@summary Test whether the TimeZone generated from JSR310 tzdb is the same
  *as the one from the tz data from javazic
  */
@@ -156,6 +156,24 @@ public class TestZoneInfo310 {
                               sun.util.calendar.ZoneInfoFile.getVersion(), ver);
             throw new RuntimeException("Version test failed");
         }
+
+        // test getAvailableIDs(raw);
+        zids_new = TimeZone.getAvailableIDs(-8 * 60 * 60 * 1000);
+        //Arrays.sort(zids_new);
+        zids_old = ZoneInfoOld.getAvailableIDs(-8 * 60 * 60 * 1000);
+        if (!Arrays.equals(zids_new, zids_old)) {
+            System.out.println("------------------------");
+            System.out.println("NEW.getAvailableIDs(-8:00)");
+            for (String zid : zids_new) {
+                System.out.println(zid);
+            }
+            System.out.println("------------------------");
+            System.out.println("OLD.getAvailableIDs(-8:00)");
+            for (String zid : zids_old) {
+                System.out.println(zid);
+            }
+            throw new RuntimeException("  FAILED:  availableIds(offset) don't match");
+        }
     }
 
     private static void delete(File f) {