/* * * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved. *  * This software is the proprietary information of Sun Microsystems, Inc.   * Use is subject to license terms. *  */import javax.jms.*;import javax.naming.*;public class SimpleMessageClient {    public static void main(String[] args) {        Context                 jndiContext = null;        QueueConnectionFactory  queueConnectionFactory = null;        QueueConnection         queueConnection = null;        QueueSession            queueSession = null;        Queue                   queue = null;        QueueSender             queueSender = null;        TextMessage             message = null;        final int               NUM_MSGS = 3;        try {            jndiContext = new InitialContext();        } catch (NamingException e) {            System.out.println("Could not create JNDI " +                "context: " + e.toString());            System.exit(1);        }        try {            queueConnectionFactory = (QueueConnectionFactory)                jndiContext.lookup                ("java:comp/env/jms/MyQueueConnectionFactory");            queue = (Queue) jndiContext.lookup("java:comp/env/jms/QueueName");        } catch (NamingException e) {            System.out.println("JNDI lookup failed: " +                e.toString());            System.exit(1);        }        try {            queueConnection =                 queueConnectionFactory.createQueueConnection();            queueSession =                 queueConnection.createQueueSession(false,                     Session.AUTO_ACKNOWLEDGE);            queueSender = queueSession.createSender(queue);            message = queueSession.createTextMessage();            for (int i = 0; i < NUM_MSGS; i++) {                message.setText("This is message " + (i + 1));                System.out.println("Sending message: " +                     message.getText());                queueSender.send(message);            }        } catch (JMSException e) {            System.out.println("Exception occurred: " + e.toString());        } finally {            if (queueConnection != null) {                try {                    queueConnection.close();                } catch (JMSException e) {}            } // if            System.exit(0);        } // finally    } // main} // class