--- /dev/null	2020-03-26 16:02:47.000000000 -0700
+++ new/test/hotspot/jtreg/runtime/HiddenClasses/pkg/HasNamedModule.java	2020-03-26 16:02:46.000000000 -0700
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2020, 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 pkg;
+
+import java.lang.invoke.MethodType;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodHandles.Lookup;
+import static java.lang.invoke.MethodHandles.Lookup.ClassOption.*;
+
+// This class is used by test HiddenGetModule.java.
+public class HasNamedModule {
+
+    public static void compareModules(byte[] klassbuf) throws Throwable {
+        String moduleName = HasNamedModule.class.getModule().toString();
+        System.out.println("HasNamedModule module: " + moduleName);
+        Lookup lookup = MethodHandles.lookup();
+        Class<?> cl = lookup.defineHiddenClass(klassbuf, false, NESTMATE).lookupClass();
+        if (cl.getModule() != HasNamedModule.class.getModule()) {
+            System.out.println("HasNamedModule: " + moduleName +
+                               ", hidden class module: " + cl.getModule());
+            throw new RuntimeException("hidden class and lookup class have different modules");
+	}
+        if (!moduleName.contains("HiddenModule")) {
+            throw new RuntimeException("wrong module name: " + moduleName);
+        }
+    }
+}