--- /dev/null	2016-05-17 12:01:17.473251102 +0900
+++ new/test/java/text/Format/DateFormat/Bug4736959.java	2016-05-23 13:57:41.711343773 +0900
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2002, 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.
+ */
+
+/**
+ * @test
+ * @bug 4736959
+ * @summary Make sure to parse "PM" (only) and produce the correct value.
+ */
+
+import java.text.*;
+import java.util.*;
+
+public class Bug4736959 {
+    /**
+     * 4736959: JSpinner won't work for AM/PM field
+     */
+    public static void main(String[] args) {
+        SimpleDateFormat f = new SimpleDateFormat("a", Locale.US);
+
+        Date d1 = f.parse("AM", new ParsePosition(0));
+        System.out.println("d1: " + d1);
+        if (d1.getHours() != 0) {
+            throw new RuntimeException("Parsing \"AM\": expected 0 (midnight), got " +
+                                       d1.getHours());
+        }
+        Date d2 = f.parse("PM", new ParsePosition(0));
+        System.out.println("d2: " + d2);
+        if (d2.getHours() != 12) {
+            throw new RuntimeException("Parsing \"PM\": expected 12 (noon), got " +
+                                       d2.getHours());
+        }
+    }
+}