diff -r c63bdf53a1a7 -r 44839fbb20db test/hotspot/jtreg/vmTestbase/nsk/share/DummyClassLoader.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/share/DummyClassLoader.java	Mon Apr 30 18:10:24 2018 -0700
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2002, 2018, 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 nsk.share;
+
+/**
+ * This loader's <tt>findClass()</tt> method is dummy.
+ */
+public class DummyClassLoader extends ClassLoader {
+    /**
+     * Cannot instantiate w/o a parent loader.
+     */
+    protected DummyClassLoader() {
+    }
+
+    /**
+     * Delegate everything to the <tt>parent</tt> loader.
+     */
+    public DummyClassLoader(ClassLoader parent) {
+        super(parent);
+    }
+
+    /**
+     * Do nothing: parent loader must load everything.
+     *
+     * @throws ClassNotFoundException In any case.
+     */
+    public Class findClass(String name) throws ClassNotFoundException {
+        throw new ClassNotFoundException(name);
+    }
+}