--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/nio/channels/Selector/CloseInvalidatesKeys.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2003, 2010, 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 4783178
+ * @summary Ensure that closing a selector invalidates its keys
+ */
+
+import java.nio.channels.*;
+
+
+public class CloseInvalidatesKeys {
+
+    public static void main (String [] args) throws Exception {
+        DatagramChannel ch = DatagramChannel.open();
+        try {
+            ch.configureBlocking(false);
+            Selector sel = Selector.open();
+            SelectionKey key = ch.register(sel, SelectionKey.OP_WRITE);
+            sel.close();
+            if (key.isValid())
+                throw new Exception("Key valid after selector closed");
+        } finally {
+            ch.close();
+        }
+    }
+
+}