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 */
17package org.apache.commons.io.filefilter;
18
19import java.io.File;
20import 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 */
30public 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}
73