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1   /*
2    * Copyright (c) 1999, 2008, 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
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7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24   */
25  
26  package javax.management;
27  
28  
29  /**
30   * Should be implemented by an object that wants to receive notifications.
31   *
32   * @since 1.5
33   */
34  public interface NotificationListener extends java.util.EventListener   {
35  
36      /**
37      * Invoked when a JMX notification occurs.
38      * The implementation of this method should return as soon as possible, to avoid
39      * blocking its notification broadcaster.
40      *
41      * @param notification The notification.
42      * @param handback An opaque object which helps the listener to associate
43      * information regarding the MBean emitter. This object is passed to the
44      * addNotificationListener call and resent, without modification, to the
45      * listener.
46      */
47      public void handleNotification(Notification notification, Object handback);
48  }