--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.compiler/share/classes/javax/tools/JavaFileObject.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2005, 2014, 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.tools;
+
+import javax.lang.model.element.NestingKind;
+import javax.lang.model.element.Modifier;
+import java.util.Objects;
+
+/**
+ * File abstraction for tools operating on Java™ programming language
+ * source and class files.
+ *
+ * <p>All methods in this interface might throw a SecurityException if
+ * a security exception occurs.
+ *
+ * <p>Unless explicitly allowed, all methods in this interface might
+ * throw a NullPointerException if given a {@code null} argument.
+ *
+ * @author Peter von der Ah&eacute;
+ * @author Jonathan Gibbons
+ * @see JavaFileManager
+ * @since 1.6
+ */
+public interface JavaFileObject extends FileObject {
+
+    /**
+     * Kinds of JavaFileObjects.
+     */
+    enum Kind {
+        /**
+         * Source files written in the Java programming language.  For
+         * example, regular files ending with {@code .java}.
+         */
+        SOURCE(".java"),
+
+        /**
+         * Class files for the Java Virtual Machine.  For example,
+         * regular files ending with {@code .class}.
+         */
+        CLASS(".class"),
+
+        /**
+         * HTML files.  For example, regular files ending with {@code
+         * .html}.
+         */
+        HTML(".html"),
+
+        /**
+         * Any other kind.
+         */
+        OTHER("");
+        /**
+         * The extension which (by convention) is normally used for
+         * this kind of file object.  If no convention exists, the
+         * empty string ({@code ""}) is used.
+         */
+        public final String extension;
+        private Kind(String extension) {
+            this.extension = Objects.requireNonNull(extension);
+        }
+    }
+
+    /**
+     * Returns the kind of this file object.
+     *
+     * @return the kind
+     */
+    Kind getKind();
+
+    /**
+     * Checks if this file object is compatible with the specified
+     * simple name and kind.  A simple name is a single identifier
+     * (not qualified) as defined in
+     * <cite>The Java&trade; Language Specification</cite>,
+     * section 6.2 "Names and Identifiers".
+     *
+     * @param simpleName a simple name of a class
+     * @param kind a kind
+     * @return {@code true} if this file object is compatible; false
+     * otherwise
+     */
+    boolean isNameCompatible(String simpleName, Kind kind);
+
+    /**
+     * Provides a hint about the nesting level of the class
+     * represented by this file object.  This method may return
+     * {@link NestingKind#MEMBER} to mean
+     * {@link NestingKind#LOCAL} or {@link NestingKind#ANONYMOUS}.
+     * If the nesting level is not known or this file object does not
+     * represent a class file this method returns {@code null}.
+     *
+     * @return the nesting kind, or {@code null} if the nesting kind
+     * is not known
+     */
+    NestingKind getNestingKind();
+
+    /**
+     * Provides a hint about the access level of the class represented
+     * by this file object.  If the access level is not known or if
+     * this file object does not represent a class file this method
+     * returns {@code null}.
+     *
+     * @return the access level
+     */
+    Modifier getAccessLevel();
+
+}