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Java > Open Source Codes > classic > Subscriber


1 /*
2  * JORAM: Java(TM) Open Reliable Asynchronous Messaging
3  * Copyright (C) 2001 - ScalAgent Distributed Technologies
4  * Copyright (C) 1996 - Dyade
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19  * USA.
20  *
21  * Initial developer(s): Frederic Maistre (INRIA)
22  * Contributor(s):
23  */
24 package classic;
25
26 import javax.jms.*;
27 import javax.naming.*;
28
29 /**
30  * Subscribes and sets a listener to the topic.
31  */
32 public class Subscriber
33 {
34   static Context ictx = null;
35
36   public static void main(String JavaDoc[] args) throws Exception JavaDoc
37   {
38     System.out.println();
39     System.out.println("Subscribes and listens to the topic...");
40
41     ictx = new InitialContext();
42     Topic topic = (Topic) ictx.lookup("topic");
43     TopicConnectionFactory tcf = (TopicConnectionFactory) ictx.lookup("tcf");
44     ictx.close();
45
46     TopicConnection tc = tcf.createTopicConnection();
47     TopicSession ts =
48       tc.createTopicSession(false, javax.jms.Session.AUTO_ACKNOWLEDGE);
49     TopicSubscriber tsub = ts.createSubscriber(topic);
50
51     tsub.setMessageListener(new MsgListener());
52
53     tc.start();
54
55     System.in.read();
56
57     tc.close();
58
59     System.out.println();
60     System.out.println("Subscription closed.");
61   }
62 }
63
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