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 2008 Sun Microsystems, Inc. 015 * Portions Copyright 2015-2016 ForgeRock AS. 016 */ 017 018package org.opends.guitools.controlpanel.util; 019 020import java.util.Comparator; 021 022/** 023 * Class used to compare Strings without taking into account the case. 024 * It can be used to sort Strings in TreeSets for instance. 025 */ 026public class LowerCaseComparator implements Comparator<String> 027{ 028 @Override 029 public int compare(String s1, String s2) 030 { 031 if (s1 != null && s2 != null) 032 { 033 return s1.toLowerCase().compareTo(s2.toLowerCase()); 034 } 035 else if (s2 != null) 036 { 037 return -1; 038 } 039 else if (s1 != null) 040 { 041 return 1; 042 } 043 else 044 { 045 return 0; 046 } 047 } 048}