--- a/nashorn/src/jdk/nashorn/internal/parser/TokenLookup.java	Wed Jan 30 21:15:14 2013 +0530
+++ b/nashorn/src/jdk/nashorn/internal/parser/TokenLookup.java	Thu Jan 31 20:07:40 2013 +0530
@@ -32,7 +32,7 @@
  * Fast lookup of operators and keywords.
  *
  */
-public class TokenLookup {
+public final class TokenLookup {
     /**
      * Lookup table for tokens.
      */