--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.compiler/share/classes/javax/tools/Tool.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,85 @@
+/*
+ * 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 java.util.Set;
+import java.io.InputStream;
+import java.io.OutputStream;
+import javax.lang.model.SourceVersion;
+
+/**
+ * Common interface for tools that can be invoked from a program.
+ * A tool is traditionally a command line program such as a compiler.
+ * The set of tools available with a platform is defined by the
+ * vendor.
+ *
+ * <p>Tools can be located using {@link
+ * java.util.ServiceLoader#load(Class)}.
+ *
+ * @author Neal M Gafter
+ * @author Peter von der Ah&eacute;
+ * @author Jonathan Gibbons
+ * @since 1.6
+ */
+public interface Tool {
+    /**
+     * Returns the name of this tool, or an empty string if no name is provided.
+     *
+     * @apiNote It is recommended that the name be the same as would be
+     * used on the command line: for example, "javac", "jar", "jlink".
+     * @implNote This implementation returns an empty string.
+     *
+     * @return the name of this tool
+     * @since 9
+     */
+    default String name() {
+        return "";
+    }
+
+    /**
+     * Run the tool with the given I/O channels and arguments. By
+     * convention a tool returns 0 for success and nonzero for errors.
+     * Any diagnostics generated will be written to either {@code out}
+     * or {@code err} in some unspecified format.
+     *
+     * @param in "standard" input; use System.in if null
+     * @param out "standard" output; use System.out if null
+     * @param err "standard" error; use System.err if null
+     * @param arguments arguments to pass to the tool
+     * @return 0 for success; nonzero otherwise
+     * @throws NullPointerException if the array of arguments contains
+     * any {@code null} elements.
+     */
+    int run(InputStream in, OutputStream out, OutputStream err, String... arguments);
+
+    /**
+     * Returns the source versions of the Java&trade; programming language
+     * supported by this tool.
+     * @return a set of supported source versions
+     */
+    Set<SourceVersion> getSourceVersions();
+
+}