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 * A file filter that always returns true.
24 *
25 * @since Commons IO 1.0
26 * @version $Revision: 587978 $ $Date: 2007-10-24 20:36:51 +0100 (Wed, 24 Oct 2007) $
27 *
28 * @author Stephen Colebourne
29 */
30 public class TrueFileFilter implements IOFileFilter, Serializable {
31
32 /**
33 * Singleton instance of true filter.
34 * @since Commons IO 1.3
35 */
36 public static final IOFileFilter TRUE = new TrueFileFilter();
37 /**
38 * Singleton instance of true filter.
39 * Please use the identical TrueFileFilter.TRUE constant.
40 * The new name is more JDK 1.5 friendly as it doesn't clash with other
41 * values when using static imports.
42 */
43 public static final IOFileFilter INSTANCE = TRUE;
44
45 /**
46 * Restrictive consructor.
47 */
48 protected TrueFileFilter() {
49 }
50
51 /**
52 * Returns true.
53 *
54 * @param file the file to check
55 * @return true
56 */
57 public boolean accept(File file) {
58 return true;
59 }
60
61 /**
62 * Returns true.
63 *
64 * @param dir the directory to check
65 * @param name the filename
66 * @return true
67 */
68 public boolean accept(File dir, String name) {
69 return true;
70 }
71
72 }