diff -r 26b065bb4ee7 -r 8cc5b440fdde src/share/classes/com/sun/tools/javac/parser/JavacParser.java
--- a/src/share/classes/com/sun/tools/javac/parser/JavacParser.java	Mon Apr 04 19:36:26 2011 +0100
+++ b/src/share/classes/com/sun/tools/javac/parser/JavacParser.java	Wed Apr 06 19:30:57 2011 -0700
@@ -1837,7 +1837,7 @@
         JCModifiers mods = optFinal(Flags.PARAMETER);
         List<JCExpression> catchTypes = catchTypes();
         JCExpression paramType = catchTypes.size() > 1 ?
-                toP(F.at(catchTypes.head.getStartPosition()).TypeDisjunction(catchTypes)) :
+                toP(F.at(catchTypes.head.getStartPosition()).TypeUnion(catchTypes)) :
                 catchTypes.head;
         JCVariableDecl formal = variableDeclaratorId(mods, paramType);
         accept(RPAREN);