diff -r 189b26e3818f -r 690c41cdab55 src/share/classes/com/sun/tools/doclets/formats/html/ClassWriterImpl.java
--- a/src/share/classes/com/sun/tools/doclets/formats/html/ClassWriterImpl.java	Fri Dec 21 15:27:55 2012 +0000
+++ b/src/share/classes/com/sun/tools/doclets/formats/html/ClassWriterImpl.java	Tue Dec 25 17:23:59 2012 -0800
@@ -516,6 +516,20 @@
     /**
      * {@inheritDoc}
      */
+    public void addFunctionalInterfaceInfo (Content classInfoTree) {
+        if (classDoc.isFunctionalInterface()) {
+            Content dt = HtmlTree.DT(getResource("doclet.Functional_Interface"));
+            Content dl = HtmlTree.DL(dt);
+            Content dd = new HtmlTree(HtmlTag.DD);
+            dd.addContent(getResource("doclet.Functional_Interface_Message"));
+            dl.addContent(dd);
+            classInfoTree.addContent(dl);
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
     public void addClassDeprecationInfo(Content classInfoTree) {
         Content hr = new HtmlTree(HtmlTag.HR);
         classInfoTree.addContent(hr);