--- /dev/null	Fri Aug 17 22:47:35 2012
+++ new/test/java/util/Locale/ExtensionsTest.java	Fri Aug 17 22:47:33 2012
@@ -0,0 +1,64 @@
+/*
+ * 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 7168528
+ * @summary Test Locale.hasExtensions() and Locale.stripExtensions().
+ */
+
+import java.util.*;
+
+public class ExtensionsTest {
+    public static void main(String[] args) {
+        Locale jaJPJP = new Locale("ja", "JP", "JP");
+        if (!jaJPJP.hasExtensions()) {
+            error(jaJPJP + " should have an extension.");
+        }
+        Locale stripped = jaJPJP.stripExtensions();
+        if (stripped.hasExtensions()) {
+            error(stripped + " should NOT have an extension.");
+        }
+        if (jaJPJP.equals(stripped)) {
+            throw new RuntimeException("jaJPJP equals stripped");
+        }
+        if (!"ja-JP-x-lvariant-JP".equals(stripped.toLanguageTag())) {
+            error("stripped.toLanguageTag() isn't ja-JP-x-lvariant-JP");
+        }
+
+        Locale enUSja = Locale.forLanguageTag("en-US-u-ca-japanese");
+        if (!enUSja.stripExtensions().equals(Locale.US)) {
+            error("stripped enUSja not equals Locale.US");
+        }
+
+        // If a Locale has no extensions, stripExtensions() returns self.
+        Locale enUS = Locale.US.stripExtensions();
+        if (enUS != Locale.US) {
+            error("stripped Locale.US != Locale.US");
+        }
+    }
+
+    private static void error(String msg) {
+        throw new RuntimeException(msg);
+    }
+}