diff -r 000000000000 -r 373ffda63c9a src/share/jaf_classes/javax/activation/FileTypeMap.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/jaf_classes/javax/activation/FileTypeMap.java	Wed Apr 27 01:27:09 2016 +0800
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 1997, 2013, 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.activation;
+
+import java.io.File;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+/**
+ * The FileTypeMap is an abstract class that provides a data typing
+ * interface for files. Implementations of this class will
+ * implement the getContentType methods which will derive a content
+ * type from a file name or a File object. FileTypeMaps could use any
+ * scheme to determine the data type, from examining the file extension
+ * of a file (like the MimetypesFileTypeMap) to opening the file and
+ * trying to derive its type from the contents of the file. The
+ * FileDataSource class uses the default FileTypeMap (a MimetypesFileTypeMap
+ * unless changed) to determine the content type of files.
+ *
+ * @see javax.activation.FileTypeMap
+ * @see javax.activation.FileDataSource
+ * @see javax.activation.MimetypesFileTypeMap
+ *
+ * @since 1.6
+ */
+
+public abstract class FileTypeMap {
+
+    private static FileTypeMap defaultMap = null;
+    private static Map<ClassLoader,FileTypeMap> map =
+                                new WeakHashMap<ClassLoader,FileTypeMap>();
+
+    /**
+     * The default constructor.
+     */
+    public FileTypeMap() {
+        super();
+    }
+
+    /**
+     * Return the type of the file object. This method should
+     * always return a valid MIME type.
+     *
+     * @param file A file to be typed.
+     * @return The content type.
+     */
+    abstract public String getContentType(File file);
+
+    /**
+     * Return the type of the file passed in.  This method should
+     * always return a valid MIME type.
+     *
+     * @param filename the pathname of the file.
+     * @return The content type.
+     */
+    abstract public String getContentType(String filename);
+
+    /**
+     * Sets the default FileTypeMap for the system. This instance
+     * will be returned to callers of getDefaultFileTypeMap.
+     *
+     * @param fileTypeMap The FileTypeMap.
+     * @exception SecurityException if the caller doesn't have permission
+     *                                  to change the default
+     */
+    public static synchronized void setDefaultFileTypeMap(FileTypeMap fileTypeMap) {
+        SecurityManager security = System.getSecurityManager();
+        if (security != null) {
+            try {
+                // if it's ok with the SecurityManager, it's ok with me...
+                security.checkSetFactory();
+            } catch (SecurityException ex) {
+                // otherwise, we also allow it if this code and the
+                // factory come from the same (non-system) class loader (e.g.,
+                // the JAF classes were loaded with the applet classes).
+                if (FileTypeMap.class.getClassLoader() == null ||
+                    FileTypeMap.class.getClassLoader() !=
+                        fileTypeMap.getClass().getClassLoader())
+                    throw ex;
+            }
+        }
+        // remove any per-thread-context-class-loader FileTypeMap
+        map.remove(SecuritySupport.getContextClassLoader());
+        defaultMap = fileTypeMap;
+    }
+
+    /**
+     * Return the default FileTypeMap for the system.
+     * If setDefaultFileTypeMap was called, return
+     * that instance, otherwise return an instance of
+     * <code>MimetypesFileTypeMap</code>.
+     *
+     * @return The default FileTypeMap
+     * @see javax.activation.FileTypeMap#setDefaultFileTypeMap
+     */
+    public static synchronized FileTypeMap getDefaultFileTypeMap() {
+        if (defaultMap != null)
+            return defaultMap;
+
+        // fetch per-thread-context-class-loader default
+        ClassLoader tccl = SecuritySupport.getContextClassLoader();
+        FileTypeMap def = map.get(tccl);
+        if (def == null) {
+            def = new MimetypesFileTypeMap();
+            map.put(tccl, def);
+        }
+        return def;
+    }
+}