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 org.apache.commons.io.filefilter;
18
19 import java.io.File;
20 import java.io.Serializable;
21
22 /**
23 * This filter accepts <code>File</code>s that are files (not directories).
24 * <p>
25 * For example, here is how to print out a list of the real files
26 * within the current directory:
27 *
28 * <pre>
29 * File dir = new File(".");
30 * String[] files = dir.list( FileFileFilter.FILE );
31 * for ( int i = 0; i < files.length; i++ ) {
32 * System.out.println(files[i]);
33 * }
34 * </pre>
35 *
36 * @since Commons IO 1.3
37 * @version $Revision:587916 $ $Date: 2008-02-05 16:34:21 +0000 (Tue, 05 Feb 2008) $
38 */
39 public class FileFileFilter extends AbstractFileFilter implements Serializable {
40
41 /** Singleton instance of file filter */
42 public static final IOFileFilter FILE = new FileFileFilter();
43
44 /**
45 * Restrictive consructor.
46 */
47 protected FileFileFilter() {
48 }
49
50 /**
51 * Checks to see if the file is a file.
52 *
53 * @param file the File to check
54 * @return true if the file is a file
55 */
56 public boolean accept(File file) {
57 return file.isFile();
58 }
59
60 }