--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.compiler/share/classes/javax/annotation/processing/Messager.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2005, 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.  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.annotation.processing;
+
+import javax.annotation.*;
+import javax.tools.Diagnostic;
+import javax.lang.model.element.*;
+
+/**
+ * A {@code Messager} provides the way for an annotation processor to
+ * report error messages, warnings, and other notices.  Elements,
+ * annotations, and annotation values can be passed to provide a
+ * location hint for the message.  However, such location hints may be
+ * unavailable or only approximate.
+ *
+ * <p>Printing a message with an {@linkplain
+ * javax.tools.Diagnostic.Kind#ERROR error kind} will {@linkplain
+ * RoundEnvironment#errorRaised raise an error}.
+ *
+ * <p>Note that the messages &quot;printed&quot; by methods in this
+ * interface may or may not appear as textual output to a location
+ * like {@link System#out} or {@link System#err}.  Implementations may
+ * choose to present this information in a different fashion, such as
+ * messages in a window.
+ *
+ * @author Joseph D. Darcy
+ * @author Scott Seligman
+ * @author Peter von der Ah&eacute;
+ * @see ProcessingEnvironment#getLocale
+ * @since 1.6
+ */
+public interface Messager {
+    /**
+     * Prints a message of the specified kind.
+     *
+     * @param kind the kind of message
+     * @param msg  the message, or an empty string if none
+     */
+    void printMessage(Diagnostic.Kind kind, CharSequence msg);
+
+    /**
+     * Prints a message of the specified kind at the location of the
+     * element.
+     *
+     * @param kind the kind of message
+     * @param msg  the message, or an empty string if none
+     * @param e    the element to use as a position hint
+     */
+    void printMessage(Diagnostic.Kind kind, CharSequence msg, Element e);
+
+    /**
+     * Prints a message of the specified kind at the location of the
+     * annotation mirror of the annotated element.
+     *
+     * @param kind the kind of message
+     * @param msg  the message, or an empty string if none
+     * @param e    the annotated element
+     * @param a    the annotation to use as a position hint
+     */
+    void printMessage(Diagnostic.Kind kind, CharSequence msg, Element e, AnnotationMirror a);
+
+    /**
+     * Prints a message of the specified kind at the location of the
+     * annotation value inside the annotation mirror of the annotated
+     * element.
+     *
+     * @param kind the kind of message
+     * @param msg  the message, or an empty string if none
+     * @param e    the annotated element
+     * @param a    the annotation containing the annotation value
+     * @param v    the annotation value to use as a position hint
+     */
+    void printMessage(Diagnostic.Kind kind,
+                      CharSequence msg,
+                      Element e,
+                      AnnotationMirror a,
+                      AnnotationValue v);
+}