001/* 002 * The contents of this file are subject to the terms of the Common Development and 003 * Distribution License (the License). You may not use this file except in compliance with the 004 * License. 005 * 006 * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the 007 * specific language governing permission and limitations under the License. 008 * 009 * When distributing Covered Software, include this CDDL Header Notice in each file and include 010 * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL 011 * Header, with the fields enclosed by brackets [] replaced by your own identifying 012 * information: "Portions copyright [year] [name of copyright owner]". 013 * 014 * Copyright 2015 ForgeRock AS. 015 */ 016package org.forgerock.audit.util; 017 018import java.io.File; 019import java.util.Comparator; 020 021/** 022 * Compare two files based on file modification time. 023 */ 024public class LastModifiedTimeFileComparator implements Comparator<File> { 025 026 /** 027 * Compare two files based on file modification time. 028 * 029 * @param o1 The first file to be compared. 030 * @param o2 The second file to be compared. 031 * 032 * @return A negative value if the first file was the most recently modified, 033 * a positive value if the second was the most recently modified, or 034 * zero if there is no discernible difference between the last modify 035 * times. 036 */ 037 @Override 038 public int compare(File o1, File o2) { 039 if(o1 == o2) { 040 return 0; 041 } 042 043 if (o1.lastModified() > o2.lastModified()) { 044 return -1; 045 } else if (o1.lastModified() < o2.lastModified()) { 046 return 1; 047 } else { 048 return 0; 049 } 050 } 051}