/* * Copyright (c) 2003 Sun Microsystems, Inc.  All rights reserved.  U.S. * Government Rights - Commercial software.  Government users are subject * to the Sun Microsystems, Inc. standard license agreement and * applicable provisions of the FAR and its supplements.  Use is subject * to license terms. * * This distribution may include materials developed by third parties. * Sun, Sun Microsystems, the Sun logo, Java and J2EE are trademarks * or registered trademarks of Sun Microsystems, Inc. in the U.S. and * other countries. * * Copyright (c) 2003 Sun Microsystems, Inc. Tous droits reserves. * * Droits du gouvernement americain, utilisateurs gouvernementaux - logiciel * commercial. Les utilisateurs gouvernementaux sont soumis au contrat de * licence standard de Sun Microsystems, Inc., ainsi qu'aux dispositions * en vigueur de la FAR (Federal Acquisition Regulations) et des * supplements a celles-ci.  Distribue par des licences qui en * restreignent l'utilisation. * * Cette distribution peut comprendre des composants developpes par des * tierces parties. Sun, Sun Microsystems, le logo Sun, Java et J2EE * sont des marques de fabrique ou des marques deposees de Sun * Microsystems, Inc. aux Etats-Unis et dans d'autres pays. */import javax.ejb.*;import javax.naming.*;import javax.jms.*;/** * The MessageBean class is a message-driven bean.  It implements * the javax.ejb.MessageDrivenBean and javax.jms.MessageListener  * interfaces. It is defined as public (but not final or  * abstract).  It defines a constructor and the methods * setMessageDrivenContext, ejbCreate, onMessage, and  * ejbRemove. */public class MessageBean implements MessageDrivenBean,         MessageListener {    private transient MessageDrivenContext mdc = null;    private Context context;        /**     * Constructor, which is public and takes no arguments.     */    public MessageBean() {        System.out.println("In MessageBean.MessageBean()");    }    /**     * setMessageDrivenContext method, declared as public (but      * not final or static), with a return type of void, and      * with one argument of type javax.ejb.MessageDrivenContext.     *     * @param mdc    the context to set     */    public void setMessageDrivenContext(MessageDrivenContext mdc)    {        System.out.println("In " +            "MessageBean.setMessageDrivenContext()");        this.mdc = mdc;    }    /**     * ejbCreate method, declared as public (but not final or      * static), with a return type of void, and with no      * arguments.     */    public void ejbCreate() {        System.out.println("In MessageBean.ejbCreate()");    }    /**     * onMessage method, declared as public (but not final or      * static), with a return type of void, and with one argument     * of type javax.jms.Message.     *     * Casts the incoming Message to a TextMessage and displays      * the text.     *     * @param inMessage    the incoming message     */    public void onMessage(Message inMessage) {        TextMessage msg = null;        try {            if (inMessage instanceof TextMessage) {                msg = (TextMessage) inMessage;                System.out.println("MESSAGE BEAN: Message " +                    "received: " + msg.getText());            } else {                System.out.println("Message of wrong type: " +                    inMessage.getClass().getName());            }        } catch (JMSException e) {            System.err.println("MessageBean.onMessage: " +                "JMSException: " + e.toString());            mdc.setRollbackOnly();        } catch (Throwable te) {            System.err.println("MessageBean.onMessage: " +                "Exception: " + te.toString());        }    }        /**     * ejbRemove method, declared as public (but not final or      * static), with a return type of void, and with no      * arguments.     */    public void ejbRemove() {        System.out.println("In MessageBean.remove()");    }}