14ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira/* 24ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * Licensed to the Apache Software Foundation (ASF) under one or more 34ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * contributor license agreements. See the NOTICE file distributed with 44ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * this work for additional information regarding copyright ownership. 54ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * The ASF licenses this file to You under the Apache License, Version 2.0 64ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * (the "License"); you may not use this file except in compliance with 74ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * the License. You may obtain a copy of the License at 84ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * 94ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * http://www.apache.org/licenses/LICENSE-2.0 104ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * 114ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * Unless required by applicable law or agreed to in writing, software 124ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * distributed under the License is distributed on an "AS IS" BASIS, 134ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 144ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * See the License for the specific language governing permissions and 154ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * limitations under the License. 164ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira */ 174ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereirapackage org.apache.commons.io.comparator; 184ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira 194ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereiraimport java.io.File; 204ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereiraimport java.io.Serializable; 214ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereiraimport java.util.Comparator; 224ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira 234ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira/** 244ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * Compare two files using the <b>default</b> {@link File#compareTo(File)} method. 254ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * <p> 264ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * This comparator can be used to sort lists or arrays of files 274ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * by using the default file comparison. 284ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * <p> 294ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * Example of sorting a list of files using the 304ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * {@link #DEFAULT_COMPARATOR} singleton instance: 314ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * <pre> 324ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * List<File> list = ... 334ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * Collections.sort(list, DefaultFileComparator.DEFAULT_COMPARATOR); 344ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * </pre> 354ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * <p> 364ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * Example of doing a <i>reverse</i> sort of an array of files using the 374ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * {@link #DEFAULT_REVERSE} singleton instance: 384ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * <pre> 394ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * File[] array = ... 404ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * Arrays.sort(array, DefaultFileComparator.DEFAULT_REVERSE); 414ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * </pre> 424ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * <p> 434ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * 444ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * @version $Revision: 609243 $ $Date: 2008-01-06 00:30:42 +0000 (Sun, 06 Jan 2008) $ 454ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * @since Commons IO 1.4 464ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira */ 474ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereirapublic class DefaultFileComparator implements Comparator<File>, Serializable { 484ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira 494ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira /** Singleton default comparator instance */ 504ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira public static final Comparator<File> DEFAULT_COMPARATOR = new DefaultFileComparator(); 514ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira 524ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira /** Singleton reverse default comparator instance */ 534ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira public static final Comparator<File> DEFAULT_REVERSE = new ReverseComparator<File>(DEFAULT_COMPARATOR); 544ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira 554ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira /** 564ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * Compare the two files using the {@link File#compareTo(File)} method. 574ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * 584ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * @param obj1 The first file to compare 594ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * @param obj2 The second file to compare 604ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * @return the result of calling file1's 614ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira * {@link File#compareTo(File)} with file2 as the parameter. 624ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira */ 634ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira public int compare(File file1, File file2) { 644ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira return file1.compareTo(file2); 654ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira } 664ebb916ddca5f59d4f854f104fca0de6e0dda706Mindy Pereira} 67