--- old/src/share/classes/javax/lang/model/type/UnknownTypeException.java	Fri Feb  6 12:50:07 2009
+++ new/src/share/classes/javax/lang/model/type/UnknownTypeException.java	Fri Feb  6 12:50:07 2009
@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 2005-2009 Sun Microsystems, Inc.  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
@@ -25,6 +25,8 @@
 
 package javax.lang.model.type;
 
+import javax.lang.model.UnknownEntityException;
+
 /**
  * Indicates that an unknown kind of type was encountered.  This can
  * occur if the language evolves and new kinds of types are added to
@@ -38,7 +40,7 @@
  * @see TypeVisitor#visitUnknown
  * @since 1.6
  */
-public class UnknownTypeException extends RuntimeException {
+public class UnknownTypeException extends UnknownEntityException {
 
     private static final long serialVersionUID = 269L;