Java tutorial
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 1997-2013 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package javax.jms; /** A client uses a {@code QueueReceiver} object to receive messages that * have been delivered to a queue. * * <P>Although it is possible to have multiple {@code QueueReceiver}s * for the same queue, the JMS API does not define how messages are * distributed between the {@code QueueReceiver}s. * * <P>If a {@code QueueReceiver} specifies a message selector, the * messages that are not selected remain on the queue. By definition, a message * selector allows a {@code QueueReceiver} to skip messages. This * means that when the skipped messages are eventually read, the total ordering * of the reads does not retain the partial order defined by each message * producer. Only {@code QueueReceiver}s without a message selector * will read messages in message producer order. * * <P>Creating a {@code MessageConsumer} provides the same features as * creating a {@code QueueReceiver}. A {@code MessageConsumer} object is * recommended for creating new code. The {@code QueueReceiver} is * provided to support existing code. * * @see javax.jms.Session#createConsumer(Destination, String) * @see javax.jms.Session#createConsumer(Destination) * @see javax.jms.QueueSession#createReceiver(Queue, String) * @see javax.jms.QueueSession#createReceiver(Queue) * @see javax.jms.MessageConsumer * * @version JMS 2.0 * @since JMS 1.0 * */ public interface QueueReceiver extends MessageConsumer { /** Gets the {@code Queue} associated with this queue receiver. * * @return this receiver's {@code Queue} * * @exception JMSException if the JMS provider fails to get the queue for * this queue receiver * due to some internal error. */ Queue getQueue() throws JMSException; }