1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *  http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  
20  package javax.servlet.http;
21  
22  import java.util.EventListener;
23  
24  	/** 
25  	* Implementations of this interface are notified of changes to the 
26  	* list of active sessions in a web application.
27  	* To receive notification events, the implementation class
28  	* must be configured in the deployment descriptor for the web application.
29  	* @see HttpSessionEvent
30  	 * @since	v 2.3
31  	*/
32  
33  public interface HttpSessionListener extends EventListener {
34      
35  	/** 
36  	* Notification that a session was created.
37  	* @param se the notification event
38  	*/
39      public void sessionCreated ( HttpSessionEvent se );
40      
41  	/** 
42  	* Notification that a session is about to be invalidated.
43  	* @param se the notification event
44  	*/
45      public void sessionDestroyed ( HttpSessionEvent se );
46      
47  }
48