--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.aot/share/classes/jdk.tools.jaotc/src/jdk/tools/jaotc/collect/FileSupport.java	Thu Jan 05 08:37:10 2017 +0100
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2017, 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.
+ *
+ * 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.tools.jaotc.collect;
+
+import java.io.IOException;
+import java.net.*;
+import java.nio.file.*;
+import java.util.HashMap;
+
+public class FileSupport {
+    public boolean exists(Path path)  {
+        return Files.exists(path);
+    }
+
+    public boolean isDirectory(Path path) {
+        return Files.isDirectory(path);
+    }
+
+    private FileSystem makeJarFileSystem(Path path) {
+        try {
+            return FileSystems.newFileSystem(makeJarFileURI(path), new HashMap<>());
+        } catch (IOException e) {
+            throw new InternalError(e);
+        }
+    }
+
+    private URI makeJarFileURI(Path path) {
+        try {
+            return new URI("jar:file:" + path.toAbsolutePath() + "!/");
+        } catch (URISyntaxException e) {
+            throw new InternalError(e);
+        }
+    }
+
+    public ClassLoader createClassLoader(Path path, ClassLoader parent) {
+        try {
+            return URLClassLoader.newInstance(buildUrls(path), parent);
+        } catch (MalformedURLException e) {
+            throw new InternalError(e);
+        }
+    }
+
+    public ClassLoader createClassLoader(Path path) throws MalformedURLException {
+        return URLClassLoader.newInstance(buildUrls(path));
+    }
+
+    private URL[] buildUrls(Path path) throws MalformedURLException {
+        return new URL[] { path.toUri().toURL() };
+    }
+
+    public Path getJarFileSystemRoot(Path jarFile) {
+        FileSystem fileSystem = makeJarFileSystem(jarFile);
+        return fileSystem.getPath("/");
+    }
+
+    public boolean isAbsolute(Path entry) {
+        return entry.isAbsolute();
+    }
+
+    public Path getSubDirectory(FileSystem fileSystem, Path root, Path path) throws IOException {
+        DirectoryStream<Path> paths = fileSystem.provider().newDirectoryStream(root,null);
+        for (Path entry : paths) {
+            Path relative = root.relativize(entry);
+            if (relative.equals(path)) {
+                return entry;
+            }
+        }
+        return null;
+    }
+}