--- /dev/null	2012-11-19 14:27:30.693760882 +0900
+++ new/test/java/util/Calendar/NarrowNamesTest.java	2012-12-03 11:44:09.000000000 +0900
@@ -0,0 +1,172 @@
+/*
+ * 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.
+ */
+
+import java.util.*;
+import static java.util.GregorianCalendar.*;
+
+public class NarrowNamesTest {
+    private static final Locale US = Locale.US;
+    private static final Locale JAJPJP = new Locale("ja", "JP", "JP");
+    private static final Locale THTH = new Locale("th", "TH");
+
+    private static final String RESET_INDEX = "RESET_INDEX";
+
+    private static int errors = 0;
+
+    // This test is locale data-dependent.
+    public static void main(String[] args) {
+        test(US, ERA, "B",
+             ERA, BC, YEAR, 1);
+        test(US, ERA, "A",
+             ERA, AD, YEAR, 2012);
+        test(US, DAY_OF_WEEK, "S",
+             YEAR, 2012, MONTH, DECEMBER, DAY_OF_MONTH, 23);
+        test(US, AM_PM, "a",
+             HOUR_OF_DAY, 10);
+        test(US, AM_PM, "p",
+             HOUR_OF_DAY, 23);
+        test(JAJPJP, DAY_OF_WEEK, "\u65e5",
+             YEAR, 24, MONTH, DECEMBER, DAY_OF_MONTH, 23);
+        test(THTH, MONTH, NARROW_STANDALONE, "\u0e18.\u0e04.",
+             YEAR, 2555, MONTH, DECEMBER, DAY_OF_MONTH, 5);
+        test(THTH, DAY_OF_WEEK, "\u0e1e",
+             YEAR, 2555, MONTH, DECEMBER, DAY_OF_MONTH, 5);
+
+        testMap(US, DAY_OF_WEEK, ALL_STYLES, // shouldn't include any narrow names
+                "", // 1-based indexing for DAY_OF_WEEK
+                "Sunday",    // Sunday
+                "Monday",    // Monday
+                "Tuesday",   // Tuesday
+                "Wednesday", // Wednesday
+                "Thursday",  // Thursday
+                "Friday",    // Friday
+                "Saturday",  // Saturday
+                RESET_INDEX,
+                "", // 1-based indexing for DAY_OF_WEEK
+                "Sun",       // abb Sunday
+                "Mon",       // abb Monday
+                "Tue",       // abb Tuesday
+                "Wed",       // abb Wednesday
+                "Thu",       // abb Thursday
+                "Fri",       // abb Friday
+                "Sat"        // abb Saturday
+                );
+        testMap(US, DAY_OF_WEEK, NARROW_FORMAT); // expect null
+        testMap(US, AM_PM, ALL_STYLES,
+                "AM", "PM",
+                RESET_INDEX,
+                "a", "p");
+        testMap(JAJPJP, DAY_OF_WEEK, NARROW_STANDALONE); // expect null
+        testMap(JAJPJP, DAY_OF_WEEK, NARROW_FORMAT,
+                "", // 1-based indexing for DAY_OF_WEEK
+                "\u65e5",
+                "\u6708",
+                "\u706b",
+                "\u6c34",
+                "\u6728",
+                "\u91d1",
+                "\u571f");
+        testMap(THTH, MONTH, NARROW_FORMAT); // expect null
+        testMap(THTH, MONTH, NARROW_STANDALONE,
+                "\u0e21.\u0e04.",
+                "\u0e01.\u0e1e.",
+                "\u0e21\u0e35.\u0e04.",
+                "\u0e40\u0e21.\u0e22.",
+                "\u0e1e.\u0e04.",
+                "\u0e21\u0e34.\u0e22.",
+                "\u0e01.\u0e04.",
+                "\u0e2a.\u0e04.",
+                "\u0e01.\u0e22.",
+                "\u0e15.\u0e04.",
+                "\u0e1e.\u0e22.",
+                "\u0e18.\u0e04.");
+
+        if (errors != 0) {
+            throw new RuntimeException("test failed");
+        }
+    }
+
+    private static void test(Locale locale, int field, String expected, int... data) {
+        test(locale, field, NARROW_FORMAT, expected, data);
+    }
+
+    private static void test(Locale locale, int field, int style, String expected, int... fieldValuePairs) {
+        Calendar cal = Calendar.getInstance(locale);
+        cal.clear();
+        for (int i = 0; i < fieldValuePairs.length;) {
+            int f = fieldValuePairs[i++];
+            int v = fieldValuePairs[i++];
+            cal.set(f, v);
+        }
+        String got = cal.getDisplayName(field, style, locale);
+        if (!expected.equals(got)) {
+            System.err.printf("test: locale=%s, field=%d, value=%d, style=%d, got=\"%s\", expected=\"%s\"%n",
+                              locale, field, cal.get(field), style, got, expected);
+            errors++;
+        }
+    }
+
+    private static void testMap(Locale locale, int field, int style, String... expected) {
+        Map<String, Integer> expectedMap = null;
+        if (expected.length > 0) {
+            expectedMap = new TreeMap<>(LengthBasedComparator.INSTANCE);
+            int index = 0;
+            for (int i = 0; i < expected.length; i++) {
+                if (expected[i].isEmpty()) {
+                    index++;
+                    continue;
+                }
+                if (expected[i] == RESET_INDEX) {
+                    index = 0;
+                    continue;
+                }
+                expectedMap.put(expected[i], index++);
+            }
+        }
+        Calendar cal = Calendar.getInstance(locale);
+        Map<String, Integer> got = cal.getDisplayNames(field, style, locale);
+        if (!(expectedMap == null && got == null)
+            && !expectedMap.equals(got)) {
+            System.err.printf("testMap: locale=%s, field=%d, style=%d, expected=%s, got=%s%n",
+                              locale, field, style, expectedMap, got);
+            errors++;
+        }
+    }
+
+    /**
+     * Comparator implementation for TreeMap which iterates keys from longest
+     * to shortest.
+     */
+    private static class LengthBasedComparator implements Comparator<String> {
+        private static final LengthBasedComparator INSTANCE = new LengthBasedComparator();
+
+        private LengthBasedComparator() {
+        }
+
+        @Override
+        public int compare(String o1, String o2) {
+            int n = o2.length() - o1.length();
+            return (n == 0) ? o1.compareTo(o2) : n;
+        }
+    }
+}