Java tutorial
/* * #! * Ontopoly Editor * #- * Copyright (C) 2001 - 2013 The Ontopia Project * #- * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * !# */ package ontopoly.utils; import java.io.Serializable; import java.util.Comparator; import net.ontopia.infoset.core.LocatorIF; import org.apache.commons.lang3.StringUtils; public class IdentityComparator implements Comparator<Object>, Serializable { public static final IdentityComparator INSTANCE = new IdentityComparator(); @Override public int compare(Object o1, Object o2) { LocatorIF i1 = (LocatorIF) o1; LocatorIF i2 = (LocatorIF) o2; return StringUtils.compareIgnoreCase(i1.getAddress(), i2.getAddress()); } }