diff -r 000000000000 -r 959103a6100f src/share/classes/javax/lang/model/element/PackageElement.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/classes/javax/lang/model/element/PackageElement.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2005, 2012, 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 javax.lang.model.element;
+
+import java.util.List;
+
+/**
+ * Represents a package program element.  Provides access to information
+ * about the package and its members.
+ *
+ * @author Joseph D. Darcy
+ * @author Scott Seligman
+ * @author Peter von der Ahé
+ * @see javax.lang.model.util.Elements#getPackageOf
+ * @since 1.6
+ */
+public interface PackageElement extends Element, QualifiedNameable {
+
+    /**
+     * Returns the fully qualified name of this package.
+     * This is also known as the package's <i>canonical</i> name.
+     *
+     * @return the fully qualified name of this package, or an
+     * empty name if this is an unnamed package
+     * @jls 6.7 Fully Qualified Names and Canonical Names
+     */
+    Name getQualifiedName();
+
+    /**
+     * Returns the simple name of this package.  For an unnamed
+     * package, an empty name is returned.
+     *
+     * @return the simple name of this package or an empty name if
+     * this is an unnamed package
+     */
+    @Override
+    Name getSimpleName();
+
+    /**
+     * Returns the {@linkplain NestingKind#TOP_LEVEL top-level}
+     * classes and interfaces within this package.  Note that
+     * subpackages are <em>not</em> considered to be enclosed by a
+     * package.
+     *
+     * @return the top-level classes and interfaces within this
+     * package
+     */
+    @Override
+    List<? extends Element> getEnclosedElements();
+
+    /**
+     * Returns {@code true} is this is an unnamed package and {@code
+     * false} otherwise.
+     *
+     * @return {@code true} is this is an unnamed package and {@code
+     * false} otherwise
+     * @jls 7.4.2 Unnamed Packages
+     */
+    boolean isUnnamed();
+
+    /**
+     * Returns {@code null} since a package is not enclosed by another
+     * element.
+     *
+     * @return {@code null}
+     */
+    @Override
+    Element getEnclosingElement();
+}