diff -r 3a9f319be48a -r b4e7a57af8df test/tools/javac/tree/TreeKindTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/tree/TreeKindTest.java	Fri Aug 27 17:21:17 2010 -0700
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2006, Oracle and/or its affiliates. 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 6341023
+ * @summary Tree API: Tree.Kind should have mapping to interface
+ */
+
+import com.sun.source.tree.*;
+
+public class TreeKindTest{
+    public static void main(String... args) {
+        boolean ok = true;
+
+        for (Tree.Kind k: Tree.Kind.values()) {
+            //System.err.println(k + " " + k.asInterface());
+            Class<? extends Tree> i = k.asInterface();
+            switch (k) {
+            case POSTFIX_INCREMENT:
+            case POSTFIX_DECREMENT:
+            case PREFIX_INCREMENT:
+            case PREFIX_DECREMENT:
+            case UNARY_PLUS:
+            case UNARY_MINUS:
+            case BITWISE_COMPLEMENT:
+            case LOGICAL_COMPLEMENT:
+                ok = ok & verify(k, i, i == UnaryTree.class);
+                break;
+
+            case MULTIPLY:
+            case DIVIDE:
+            case REMAINDER:
+            case PLUS:
+            case MINUS:
+            case LEFT_SHIFT:
+            case RIGHT_SHIFT:
+            case UNSIGNED_RIGHT_SHIFT:
+            case LESS_THAN:
+            case GREATER_THAN:
+            case LESS_THAN_EQUAL:
+            case GREATER_THAN_EQUAL:
+            case EQUAL_TO:
+            case NOT_EQUAL_TO:
+            case AND:
+            case XOR:
+            case OR:
+            case CONDITIONAL_AND:
+            case CONDITIONAL_OR:
+                ok = ok & verify(k, i, i == BinaryTree.class);
+                break;
+
+            case MULTIPLY_ASSIGNMENT:
+            case DIVIDE_ASSIGNMENT:
+            case REMAINDER_ASSIGNMENT:
+            case PLUS_ASSIGNMENT:
+            case MINUS_ASSIGNMENT:
+            case LEFT_SHIFT_ASSIGNMENT:
+            case RIGHT_SHIFT_ASSIGNMENT:
+            case UNSIGNED_RIGHT_SHIFT_ASSIGNMENT:
+            case AND_ASSIGNMENT:
+            case XOR_ASSIGNMENT:
+            case OR_ASSIGNMENT:
+                ok = ok & verify(k, i, i == CompoundAssignmentTree.class);
+                break;
+
+            case INT_LITERAL:
+            case LONG_LITERAL:
+            case FLOAT_LITERAL:
+            case DOUBLE_LITERAL:
+            case BOOLEAN_LITERAL:
+            case CHAR_LITERAL:
+            case STRING_LITERAL:
+            case NULL_LITERAL:
+                ok = ok & verify(k, i, i == LiteralTree.class);
+                break;
+
+            case UNBOUNDED_WILDCARD:
+            case EXTENDS_WILDCARD:
+            case SUPER_WILDCARD:
+                ok = ok & verify(k, i, i == WildcardTree.class);
+                break;
+
+            case INTERFACE:
+            case ANNOTATION_TYPE:
+            case ENUM:
+            case CLASS:
+                ok = ok & verify(k, i, i == ClassTree.class);
+                break;
+
+            case OTHER:
+                ok = ok & verify(k, i, i == null);
+                break;
+
+            default:
+                String ks = k.toString().replace("_", "") + "tree";
+                String iName = i.getName();
+                String is = iName.substring(iName.lastIndexOf(".") + 1);
+                ok = ok & verify(k, i, ks.equalsIgnoreCase(is));
+            }
+        }
+
+        if (!ok)
+            throw new AssertionError("test failed");
+    }
+
+    static boolean verify(Tree.Kind k, Class<?> c, boolean b) {
+        if (!b)
+            System.err.println("error: " + k + " " + c);
+        return b;
+    }
+}