--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/tree/CatchTreeImpl.java	Wed Jul 05 21:57:11 2017 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/tree/CatchTreeImpl.java	Tue Jul 12 21:18:13 2016 +0530
@@ -28,12 +28,12 @@
 import jdk.nashorn.internal.ir.CatchNode;
 
 final class CatchTreeImpl extends TreeImpl implements CatchTree {
-    private final IdentifierTree param;
+    private final ExpressionTree param;
     private final BlockTree block;
     private final ExpressionTree condition;
 
     CatchTreeImpl(final CatchNode node,
-            final IdentifierTree param,
+            final ExpressionTree param,
             final BlockTree block,
             final ExpressionTree condition) {
         super(node);
@@ -48,7 +48,7 @@
     }
 
     @Override
-    public IdentifierTree getParameter() {
+    public ExpressionTree getParameter() {
         return param;
     }