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19
20 package org.apache.mailet.dates;
21
22 import java.util.Date;
23
24 import javax.mail.internet.MailDateFormat;
25
26
27 /***
28 * A thread safe wrapper for the <code>javax.mail.internet.MailDateFormat</code> class.
29 *
30 */
31 public class RFC822DateFormat extends SynchronizedDateFormat {
32 /***
33 * A static instance of the RFC822DateFormat, used by toString
34 */
35 private static RFC822DateFormat instance;
36
37 static {
38 instance = new RFC822DateFormat();
39 }
40
41 /***
42 * This static method allows us to format RFC822 dates without
43 * explicitly instantiating an RFC822DateFormat object.
44 *
45 * @return java.lang.String
46 * @param d Date
47 *
48 * @deprecated This method is not necessary and is preserved for API
49 * backwards compatibility. Users of this class should
50 * instantiate an instance and use it as they would any
51 * other DateFormat object.
52 */
53 public static String toString(Date d) {
54 return instance.format(d);
55 }
56
57 /***
58 * Constructor for RFC822DateFormat
59 */
60 public RFC822DateFormat() {
61 super(new MailDateFormat());
62 }
63 }