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 false. 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 FalseFileFilter implements IOFileFilter, Serializable { 31 32 /** 33 * Singleton instance of false filter. 34 * @since Commons IO 1.3 35 */ 36 public static final IOFileFilter FALSE = new FalseFileFilter(); 37 /** 38 * Singleton instance of false filter. 39 * Please use the identical FalseFileFilter.FALSE 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 = FALSE; 44 45 /** 46 * Restrictive consructor. 47 */ 48 protected FalseFileFilter() { 49 } 50 51 /** 52 * Returns false. 53 * 54 * @param file the file to check 55 * @return false 56 */ 57 public boolean accept(File file) { 58 return false; 59 } 60 61 /** 62 * Returns false. 63 * 64 * @param dir the directory to check 65 * @param name the filename 66 * @return false 67 */ 68 public boolean accept(File dir, String name) { 69 return false; 70 } 71 72 } 73