1 /************************************************************************
2 * Copyright (c) 1999-2006 The Apache Software Foundation. *
3 * All rights reserved. *
4 * ------------------------------------------------------------------- *
5 * Licensed under the Apache License, Version 2.0 (the "License"); you *
6 * may not use this file except in compliance with the License. You *
7 * may obtain a copy of the License at: *
8 * *
9 * http://www.apache.org/licenses/LICENSE-2.0 *
10 * *
11 * Unless required by applicable law or agreed to in writing, software *
12 * distributed under the License is distributed on an "AS IS" BASIS, *
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or *
14 * implied. See the License for the specific language governing *
15 * permissions and limitations under the License. *
16 ***********************************************************************/
17
18 package org.apache.mailet.dates;
19
20 import java.util.Date;
21
22 import javax.mail.internet.MailDateFormat;
23
24
25 /***
26 * A thread safe wrapper for the <code>javax.mail.internet.MailDateFormat</code> class.
27 *
28 */
29 public class RFC822DateFormat extends SynchronizedDateFormat {
30 /***
31 * A static instance of the RFC822DateFormat, used by toString
32 */
33 private static RFC822DateFormat instance;
34
35 static {
36 instance = new RFC822DateFormat();
37 }
38
39 /***
40 * This static method allows us to format RFC822 dates without
41 * explicitly instantiating an RFC822DateFormat object.
42 *
43 * @return java.lang.String
44 * @param d Date
45 *
46 * @deprecated This method is not necessary and is preserved for API
47 * backwards compatibility. Users of this class should
48 * instantiate an instance and use it as they would any
49 * other DateFormat object.
50 */
51 public static String toString(Date d) {
52 return instance.format(d);
53 }
54
55 /***
56 * Constructor for RFC822DateFormat
57 */
58 public RFC822DateFormat() {
59 super(new MailDateFormat());
60 }
61 }