--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/SharedArchiveFile/SharedStringsWb.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2013, 2015, 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.
+ */
+
+import sun.hotspot.WhiteBox;
+
+// This class is used by the test SharedStrings.java
+// It should be launched in CDS mode
+public class SharedStringsWb {
+    public static void main(String[] args) throws Exception {
+        WhiteBox wb = WhiteBox.getWhiteBox();
+
+        if (wb.areSharedStringsIgnored()) {
+            System.out.println("Shared strings are ignored, assuming PASS");
+            return;
+        }
+
+        // The string below is known to be added to CDS archive
+        String s = "<init>";
+        String internedS = s.intern();
+
+        // Check that it's a valid string
+        if (s.getClass() != String.class || !(s instanceof String)) {
+            throw new RuntimeException("Shared string is not a valid String: FAIL");
+        }
+
+        if (wb.isShared(internedS)) {
+            System.out.println("Found shared string, result: PASS");
+        } else {
+            throw new RuntimeException("String is not shared, result: FAIL");
+        }
+    }
+}
+
+