1 /*
2 * $Id: DateFormat.java [15-May-2004]
3 *
4 * Copyright (c) 2004, Ben Fortuna
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * o Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * o Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * o Neither the name of Ben Fortuna nor the names of any other contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34 package net.fortuna.ical4j.util;
35
36 import java.text.ParseException;
37 import java.text.SimpleDateFormat;
38 import java.util.Date;
39
40 /***
41 * Defines a format for all iCalendar dates.
42 * @author benfortuna
43 */
44 public final class DateFormat {
45
46 private static final String DATE_FORMAT = "yyyyMMdd";
47
48 private static DateFormat instance = new DateFormat();
49
50 private java.text.DateFormat format;
51
52 /***
53 * Constructor made private to enforce singleton.
54 */
55 private DateFormat() {
56 format = new SimpleDateFormat(DATE_FORMAT);
57 }
58
59 /***
60 * @return Returns the instance.
61 */
62 public static DateFormat getInstance() {
63 return instance;
64 }
65
66 /***
67 * @param date a date to format
68 * @return a string representation of the specified date
69 */
70 public String format(final Date date) {
71 return format.format(date);
72 }
73
74 /***
75 * @param string a string representation of a date
76 * @return a date parsed from the specified string representation
77 * @throws java.text.ParseException thrown when the specified string
78 * is not a valid representation of a date
79 */
80 public Date parse(final String string) throws ParseException {
81 return format.parse(string);
82 }
83 }