--- a/hotspot/src/jdk.aot/share/classes/jdk.tools.jaotc/src/jdk/tools/jaotc/collect/directory/DirectorySourceProvider.java	Tue Aug 22 08:53:35 2017 -0700
+++ b/hotspot/src/jdk.aot/share/classes/jdk.tools.jaotc/src/jdk/tools/jaotc/collect/directory/DirectorySourceProvider.java	Tue Aug 22 11:50:51 2017 -0700
@@ -20,6 +20,7 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
+
 package jdk.tools.jaotc.collect.directory;
 
 import jdk.tools.jaotc.collect.ClassSource;
@@ -32,7 +33,7 @@
 import java.nio.file.FileSystems;
 import java.nio.file.Path;
 
-public class DirectorySourceProvider implements SourceProvider {
+public final class DirectorySourceProvider implements SourceProvider {
     private final FileSupport fileSupport;
     private final FileSystem fileSystem;
     public final static String TYPE = "directory";