1 /*

     2  * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 import java.util.ArrayList;

    27 import java.util.HashMap;

    28 import java.util.List;

    29 import java.util.Map;

    30 

    31 /**

    32  * Month enum handles month related manipulation.

    33  *

    34  * @since 1.4

    35  */

    36 enum Month {

    37     JANUARY("Jan"),

    38     FEBRUARY("Feb"),

    39     MARCH("Mar"),

    40     APRIL("Apr"),

    41     MAY("May"),

    42     JUNE("Jun"),

    43     JULY("Jul"),

    44     AUGUST("Aug"),

    45     SEPTEMBER("Sep"),

    46     OCTOBER("Oct"),

    47     NOVEMBER("Nov"),

    48     DECEMBER("Dec");

    49 

    50     private final String abbr;

    51 

    52     private static final Map<String,Month> abbreviations

    53                                 = new HashMap<String,Month>(12);

    54 

    55     static {

    56         for (Month m : Month.values()) {

    57             abbreviations.put(m.abbr, m);

    58         }

    59     }

    60 

    61     private Month(String abbr) {

    62         this.abbr = abbr;

    63     }

    64 

    65     int value() {

    66         return ordinal() + 1;

    67     }

    68 

    69     /**

    70      * Parses the specified string as a month abbreviation.

    71      * @param name the month abbreviation

    72      * @return the Month value

    73      */

    74     static Month parse(String name) {

    75         Month m = abbreviations.get(name);

    76         if (m != null) {

    77             return m;

    78         }

    79         return null;

    80     }

    81 

    82     /**

    83      * @param month the nunmth number (1-based)

    84      * @return the month name in uppercase of the specified month

    85      */

    86     static String toString(int month) {

    87         if (month >= JANUARY.value() && month <= DECEMBER.value()) {

    88             return "Calendar." + Month.values()[month - 1];

    89         }

    90         throw new IllegalArgumentException("wrong month number: " + month);

    91     }

    92 }