--- /dev/null	2012-03-27 14:19:29.000000000 +0100
+++ new/src/macosx/classes/java/lang/ClassLoaderHelper.java	2012-03-27 14:19:29.000000000 +0100
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2012, 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 java.lang;
+
+import java.io.File;
+
+class ClassLoaderHelper {
+
+    private ClassLoaderHelper() {}
+
+    /**
+     * Returns an alternate path name for the given file
+     * such that if the original pathname did not exist, then the
+     * file may be located at the alternate location.
+     * For mac, this replaces the final .dylib suffix with .jnilib
+     */
+    static File mapAlternativeName(File lib) {
+	String name = lib.toString();
+	int index = name.lastIndexOf('.');
+	if (index < 0) {
+	    return null;
+	}
+	return new File(name.substring(0, index) + ".jnilib");
+    }
+}
+
+
+