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 1.0 026 * @version $Id: TrueFileFilter.java 1304058 2012-03-22 21:02:43Z sebb $ 027 * @see FileFilterUtils#trueFileFilter() 028 */ 029 public class TrueFileFilter implements IOFileFilter, Serializable { 030 031 /** 032 * Singleton instance of true filter. 033 * @since 1.3 034 */ 035 public static final IOFileFilter TRUE = new TrueFileFilter(); 036 /** 037 * Singleton instance of true filter. 038 * Please use the identical TrueFileFilter.TRUE constant. 039 * The new name is more JDK 1.5 friendly as it doesn't clash with other 040 * values when using static imports. 041 */ 042 public static final IOFileFilter INSTANCE = TRUE; 043 044 /** 045 * Restrictive consructor. 046 */ 047 protected TrueFileFilter() { 048 } 049 050 /** 051 * Returns true. 052 * 053 * @param file the file to check (ignored) 054 * @return true 055 */ 056 public boolean accept(File file) { 057 return true; 058 } 059 060 /** 061 * Returns true. 062 * 063 * @param dir the directory to check (ignored) 064 * @param name the filename (ignored) 065 * @return true 066 */ 067 public boolean accept(File dir, String name) { 068 return true; 069 } 070 071 }