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