HttpSessionListener


1   /*
2   * Licensed to the Apache Software Foundation (ASF) under one or more
3   * contributor license agreements.  See the NOTICE file distributed with
4   * this work for additional information regarding copyright ownership.
5   * The ASF licenses this file to You under the Apache License, Version 2.0
6   * (the "License"); you may not use this file except in compliance with
7   * the License.  You 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 implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17  package javax.servlet.http;
18  
19  import java.util.EventListener  ;
20  
21      /** 
22      * Implementations of this interface are notified of changes to the 
23      * list of active sessions in a web application.
24      * To receive notification events, the implementation class
25      * must be configured in the deployment descriptor for the web application.
26      * @see HttpSessionEvent
27       * @since   v 2.3
28      */
29  
30  public interface HttpSessionListener extends EventListener   {
31      
32      /** 
33      * Notification that a session was created.
34      * @param se the notification event
35      */
36      public void sessionCreated ( HttpSessionEvent   se );
37      
38      /** 
39      * Notification that a session is about to be invalidated.
40      * @param se the notification event
41      */
42      public void sessionDestroyed ( HttpSessionEvent   se );
43      
44  }
45  
46

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