Java tutorial
/** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. */ import java.util.Arrays; import java.util.HashSet; import javax.jms.MessageListener; /** * A simple tool for producing and consuming messages * * */ public class ProducerAndConsumerTool extends ConsumerTool implements MessageListener { public static void main(String[] args) { ConsumerTool consumerTool = new ConsumerTool(); String[] unknown = CommandLineSupport.setOptions(consumerTool, args); HashSet<String> set1 = new HashSet<String>(Arrays.asList(unknown)); ProducerTool producerTool = new ProducerTool(); unknown = CommandLineSupport.setOptions(producerTool, args); HashSet<String> set2 = new HashSet<String>(Arrays.asList(unknown)); set1.retainAll(set2); if (set1.size() > 0) { System.out.println("Unknown options: " + set1); System.exit(-1); } consumerTool.run(); producerTool.run(); } }