--- a/langtools/make/Makefile-classic	Fri Feb 01 12:01:03 2013 -0800
+++ b/langtools/make/Makefile-classic	Fri Feb 01 13:01:26 2013 -0800
@@ -241,6 +241,7 @@
 	javax/annotation/processing \
 	javax/lang/model \
 	javax/tools \
+        jdk/ \
 	com/sun/source \
 	com/sun/tools/javac 
 

--- a/langtools/make/build.properties	Fri Feb 01 12:01:03 2013 -0800
+++ b/langtools/make/build.properties	Fri Feb 01 13:01:26 2013 -0800
@@ -116,6 +116,7 @@
         javax/annotation/processing/ \
         javax/lang/model/ \
         javax/tools/ \
+        jdk/ \
         com/sun/source/ \
         com/sun/tools/javac/ \
         com/sun/tools/doclint/

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/jdk/Supported.java	Fri Feb 01 13:01:26 2013 -0800
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2013, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package jdk;
+
+import java.lang.annotation.*;
+
+/**
+  * Indicates whether or not a JDK specific type or package is a
+  * supported part of the JDK.
+  *
+  * This annotation should only be applied to types and packages
+  * <em>outside</em> of the Java SE namespaces of {@code java.*} and
+  * {@code javax.*} packages.  For example, certain portions of {@code
+  * com.sun.*} are official parts of the JDK meant to be generally
+  * usable while other portions of {@code com.sun.*} are not.  This
+  * annotation type allows those portions to be easily and
+  * programmaticly distinguished.
+  *
+  * @since 1.8
+  */
+@Documented
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.TYPE, ElementType.PACKAGE})
+@Supported
+public @interface Supported {
+    /**
+     * Whether or not this package or type is a supported part of the JDK.
+     */
+    boolean value() default true;
+}