--- /dev/null	Fri Jan 22 12:17:25 2016
+++ new/src/jdk.javadoc/share/classes/jdk/javadoc/internal/api/JavadocTaskImpl.java	Fri Jan 22 12:17:25 2016
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2012, 2016, 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.javadoc.internal.api;
+
+import java.util.Collections;
+import java.util.Locale;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import javax.tools.DocumentationTool.DocumentationTask;
+import javax.tools.JavaFileObject;
+
+import com.sun.tools.javac.util.ClientCodeException;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.DefinedBy;
+import com.sun.tools.javac.util.DefinedBy.Api;
+import jdk.javadoc.internal.tool.Start;
+
+/**
+ * Provides access to functionality specific to the JDK documentation tool,
+ * javadoc.
+ *
+ * <p><b>This is NOT part of any supported API.
+ * If you write code that depends on this, you do so at your own
+ * risk.  This code and its internal interfaces are subject to change
+ * or deletion without notice.</b></p>
+ */
+public class JavadocTaskImpl implements DocumentationTask {
+    private final AtomicBoolean used = new AtomicBoolean();
+
+    private final Context context;
+    private Class<?> docletClass;
+    private Iterable<String> options;
+    private Iterable<? extends JavaFileObject> fileObjects;
+    private Locale locale;
+
+    public JavadocTaskImpl(Context context, Class<?> docletClass,
+            Iterable<String> options, Iterable<? extends JavaFileObject> fileObjects) {
+        this.context = context;
+        this.docletClass = docletClass;
+
+        this.options = (options == null) ? Collections.<String>emptySet()
+                : nullCheck(options);
+        this.fileObjects = (fileObjects == null) ? Collections.<JavaFileObject>emptySet()
+                : nullCheck(fileObjects);
+        setLocale(Locale.getDefault());
+    }
+
+    @DefinedBy(Api.COMPILER)
+    public void setLocale(Locale locale) {
+        if (used.get())
+            throw new IllegalStateException();
+        this.locale = locale;
+    }
+
+    @DefinedBy(Api.COMPILER)
+    public Boolean call() {
+        if (!used.getAndSet(true)) {
+            initContext();
+            Start jdoc = new Start(context);
+            try {
+                return jdoc.begin(docletClass, options, fileObjects);
+            } catch (ClientCodeException e) {
+                throw new RuntimeException(e.getCause());
+            }
+        } else {
+            throw new IllegalStateException("multiple calls to method 'call'");
+        }
+    }
+
+    private void initContext() {
+        //initialize compiler's default locale
+        context.put(Locale.class, locale);
+    }
+
+    private static <T> Iterable<T> nullCheck(Iterable<T> items) {
+        for (T item: items) {
+            if (item == null)
+                throw new NullPointerException();
+        }
+        return items;
+    }
+}