Java tutorial
/* * Copyright 2010 JBoss Inc * * 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 org.optaconf.benchmark.examples.common.domain; import java.io.Serializable; import java.util.Comparator; import org.apache.commons.lang3.builder.CompareToBuilder; public class PersistableIdComparator implements Comparator<AbstractPersistable>, Serializable { public int compare(AbstractPersistable a, AbstractPersistable b) { return new CompareToBuilder().append(a.getId(), b.getId()).toComparison(); } }