001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.io.filefilter; 018 019 import java.io.File; 020 import java.io.Serializable; 021 022 /** 023 * A file filter that always returns true. 024 * 025 * @since Commons IO 1.0 026 * @version $Revision: 1005099 $ $Date: 2010-10-06 17:13:01 +0100 (Wed, 06 Oct 2010) $ 027 * 028 * @author Stephen Colebourne 029 * @see FileFilterUtils#trueFileFilter() 030 */ 031 public class TrueFileFilter implements IOFileFilter, Serializable { 032 033 /** 034 * Singleton instance of true filter. 035 * @since Commons IO 1.3 036 */ 037 public static final IOFileFilter TRUE = new TrueFileFilter(); 038 /** 039 * Singleton instance of true filter. 040 * Please use the identical TrueFileFilter.TRUE constant. 041 * The new name is more JDK 1.5 friendly as it doesn't clash with other 042 * values when using static imports. 043 */ 044 public static final IOFileFilter INSTANCE = TRUE; 045 046 /** 047 * Restrictive consructor. 048 */ 049 protected TrueFileFilter() { 050 } 051 052 /** 053 * Returns true. 054 * 055 * @param file the file to check 056 * @return true 057 */ 058 public boolean accept(File file) { 059 return true; 060 } 061 062 /** 063 * Returns true. 064 * 065 * @param dir the directory to check 066 * @param name the filename 067 * @return true 068 */ 069 public boolean accept(File dir, String name) { 070 return true; 071 } 072 073 }