diff -r ef8a98bc71f8 -r c4d9d1b08e2e test/jdk/lib/testlibrary/bytecode/jdk/experimental/bytecode/BasicClassBuilder.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/lib/testlibrary/bytecode/jdk/experimental/bytecode/BasicClassBuilder.java	Fri Sep 08 10:46:46 2017 -0700
@@ -0,0 +1,38 @@
+/*
+ * 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.experimental.bytecode;
+
+public class BasicClassBuilder extends ClassBuilder<String, String, BasicClassBuilder> {
+
+    public BasicClassBuilder(String thisClass, int majorVersion, int minorVersion) {
+        this();
+        withMinorVersion(minorVersion);
+        withMajorVersion(majorVersion);
+        withThisClass(thisClass);
+    }
+
+    public BasicClassBuilder() {
+        super(new BytePoolHelper<>(s->s, s->s), new BasicTypeHelper());
+    }
+}