1 /* 2 * Copyright (c) 2000, 2018, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import java.util.ArrayList; 25 import java.util.HashMap; 26 import java.util.List; 27 import java.util.Map; 28 29 /** 30 * Month enum handles month related manipulation. 31 * 32 * @since 1.4 33 */ 34 enum Month { 35 JANUARY("Jan"), 36 FEBRUARY("Feb"), 37 MARCH("Mar"), 38 APRIL("Apr"), 39 MAY("May"), 40 JUNE("Jun"), 41 JULY("Jul"), 42 AUGUST("Aug"), 43 SEPTEMBER("Sep"), 44 OCTOBER("Oct"), 45 NOVEMBER("Nov"), 46 DECEMBER("Dec"); 47 48 private final String abbr; 49 50 private static final Map<String,Month> abbreviations 51 = new HashMap<String,Month>(12); 52 53 static { 54 for (Month m : Month.values()) { 55 abbreviations.put(m.abbr, m); 56 } 57 } 58 59 private Month(String abbr) { 60 this.abbr = abbr; 61 } 62 63 int value() { 64 return ordinal() + 1; 65 } 66 67 /** 68 * Parses the specified string as a month abbreviation. 69 * @param name the month abbreviation 70 * @return the Month value 71 */ 72 static Month parse(String name) { 73 Month m = abbreviations.get(name); 74 if (m != null) { 75 return m; 76 } 77 return null; 78 } 79 80 /** 81 * @param month the nunmth number (1-based) 82 * @return the month name in uppercase of the specified month 83 */ 84 static String toString(int month) { 85 if (month >= JANUARY.value() && month <= DECEMBER.value()) { 86 return "Calendar." + Month.values()[month - 1]; 87 } 88 throw new IllegalArgumentException("wrong month number: " + month); 89 } 90 }