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;
21  
22  import java.util.EventListener;
23  
24  	/** 
25  	 * Implementations of this interface receive notifications about
26  	 * changes to the servlet context of the web application they are
27  	 * part of.
28  	 * To receive notification events, the implementation class
29  	 * must be configured in the deployment descriptor for the web
30  	 * application.
31  	 * @see ServletContextEvent
32  	 * @since	v 2.3
33  	 */
34  
35  public interface ServletContextListener extends EventListener {
36  	/**
37  	 ** Notification that the web application initialization
38  	 ** process is starting.
39  	 ** All ServletContextListeners are notified of context
40  	 ** initialization before any filter or servlet in the web
41  	 ** application is initialized.
42  	 */
43  
44      public void contextInitialized ( ServletContextEvent sce );
45  
46  	/**
47  	 ** Notification that the servlet context is about to be shut down.
48  	 ** All servlets and filters have been destroy()ed before any
49  	 ** ServletContextListeners are notified of context
50  	 ** destruction.
51  	 */
52      public void contextDestroyed ( ServletContextEvent sce );
53  }
54