001 /*--------------------------------------------------------------------------+ 002 $Id: FilenameComparator.java 26268 2010-02-18 10:44:30Z juergens $ 003 | | 004 | Copyright 2005-2010 Technische Universitaet Muenchen | 005 | | 006 | Licensed under the Apache License, Version 2.0 (the "License"); | 007 | you may not use this file except in compliance with the License. | 008 | You may obtain a copy of the License at | 009 | | 010 | http://www.apache.org/licenses/LICENSE-2.0 | 011 | | 012 | Unless required by applicable law or agreed to in writing, software | 013 | distributed under the License is distributed on an "AS IS" BASIS, | 014 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 015 | See the License for the specific language governing permissions and | 016 | limitations under the License. | 017 +--------------------------------------------------------------------------*/ 018 package edu.tum.cs.commons.filesystem; 019 020 import java.io.File; 021 import java.util.Comparator; 022 023 /** 024 * Compares files based on the lexical order of their fully qualified names. 025 * Files must not be null. 026 * 027 * @author juergens 028 * @author $Author: juergens $ 029 * @version $Rev: 26268 $ 030 * @levd.rating GREEN Hash: 58C92A2D888E51D9684AE5394A7D3FDF 031 */ 032 public class FilenameComparator implements Comparator<File> { 033 034 /** {@inheritDoc} */ 035 public int compare(File file1, File file2) { 036 if (file1 == null || file2 == null) { 037 throw new IllegalArgumentException("Files must not be null"); 038 } 039 040 return file1.getAbsolutePath().compareTo(file2.getAbsolutePath()); 041 } 042 043 }