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Java > Open Source Codes > org > apache > commons > vfs > FileListener


1 /*
2  * Copyright 2002-2005 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.commons.vfs;
17
18 /**
19  * Listens for changes to a file.
20  *
21  * @author <a HREF="mailto:adammurdoch@apache.org">Adam Murdoch</a>
22  */
23 public interface FileListener
24 {
25     /**
26      * Called when a file is created.
27      */
28     void fileCreated(FileChangeEvent event) throws Exception JavaDoc;
29
30     /**
31      * Called when a file is deleted.
32      */
33     void fileDeleted(FileChangeEvent event) throws Exception JavaDoc;
34
35     /**
36      * Called when a file is changed.<br />
37      * This will only happen if you monitor the file using {@link FileMonitor}.
38      */
39     void fileChanged(FileChangeEvent event) throws Exception JavaDoc;
40 }
41
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