--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/Properties/CheckUnsynchronized.java	Thu May 19 16:25:35 2016 -0700
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2016, 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 java.util.Enumeration;
+import java.util.Properties;
+import java.util.concurrent.CompletableFuture;
+
+/*
+ * @test
+ * @bug 8029891
+ * @summary Test Properties methods that do not synchronize any more
+ * @run main CheckUnsynchronized
+ */
+public class CheckUnsynchronized {
+    public static void main(String[] args) {
+        Properties props = new Properties();
+        synchronized (props) {
+            props.setProperty("key", "value");
+            System.out.println("contains(value)? " +
+                    CompletableFuture.supplyAsync(() -> props.contains("value")).join());
+            System.out.println("containsKey(key)? " +
+                    CompletableFuture.supplyAsync(() -> props.containsKey("key")).join());
+            System.out.println("containsValue(value)? " +
+                    CompletableFuture.supplyAsync(() -> props.containsValue("value")).join());
+            Enumeration<Object> elems =
+                    CompletableFuture.supplyAsync(() -> props.elements()).join();
+            System.out.println("first value from elements(): " + elems.nextElement());
+            System.out.println("value from get(): " +
+                    CompletableFuture.supplyAsync(() -> props.getProperty("key")).join());
+            System.out.println("getOrDefault(\"missing\"): " +
+                    CompletableFuture.supplyAsync(() -> props.getOrDefault("missing", "default")).join());
+            System.out.println("isEmpty()? " +
+                    CompletableFuture.supplyAsync(() -> props.isEmpty()).join());
+            Enumeration<Object> keys =
+                    CompletableFuture.supplyAsync(() -> props.keys()).join();
+            System.out.println("first key from keys(): " + keys.nextElement());
+            System.out.println("size(): " +
+                    CompletableFuture.supplyAsync(() -> props.size()).join());
+        }
+    }
+}