--- old/src/jdk/nashorn/internal/runtime/resources/Messages.properties	2013-06-06 13:31:50.386791976 +0530
+++ new/src/jdk/nashorn/internal/runtime/resources/Messages.properties	2013-06-06 13:31:50.254791318 +0530
@@ -28,6 +28,10 @@
 lexer.error.invalid.hex=Invalid hex digit
 lexer.error.invalid.octal=Invalid octal digit
 lexer.error.strict.no.octal=cannot use octal escapes in strict mode
+lexer.error.json.no.octal.number=cannot use octal numbers in JSON
+lexer.error.json.no.hexadecimal.number=cannot use hexadecimal numbers in JSON
+lexer.error.json.invalid.number=Invalid JSON number format
+lexer.error.invalid.escape.char=Invalid escape character
 lexer.error.illegal.identifier.character=Illegal character in identifier
 
 parser.error.illegal.continue.stmt=Illegal continue statement