User applications messages through JMS

Hi all,
this is my first post.
I'm trying to figure out how to remove a message application based on java/db2 with jms.
Say we have our web application each user of this application has a panel where he can see if he has messages or activities to do.
Messages or request to do a certain activity are sent by other users of this application via this messaging tools.
The user which is also used as to make the message envelope(sender,receiver,message) is taken from a sort of custom made/ldap and the user is retrievied with a service.
So Im wondering if jms is suitable for this job or if he has too much overhead for this kind of operation.Since I'm new to jms I'm wonderind how to define message destination, if i use ptp model how i can send message directly to user1 insted of user 3 or user4?
thanks a lot in advance,
any help would be appreciated :-D

EDN and JMS

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    Copyright (c) 2006 Sun Microsystems, Inc.  All rights reserved.
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    ================================================================================
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    {code}
    I know it is very large. I think the error it is in this line.
    {code}
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    {code}
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    import com.sun.tools.ws.processor.model.java.JavaArrayType;
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    import javax.ejb.SessionContext;
    import javax.ejb.Stateless;
    import javax.jms.ConnectionFactory;
    import javax.jms.QueueConnectionFactory;
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    {code}
    the file publicarRemote.java
    {code}
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    {code}
    file mensaje.java
    {code}
    package org.pepes;
    import javax.annotation.Resource;
    import javax.ejb.ActivationConfigProperty;
    import javax.ejb.MessageDriven;
    import javax.ejb.MessageDrivenContext;
    import javax.jms.Message;
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    the file prueba.jsp
    {code}
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    --%>
    <%--
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    --%>
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       "http://www.w3.org/TR/html4/loose.dtd">
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        <body>
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        This example uses JSTL, uncomment the taglib directive above.
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            Hello ${param.name}!
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            catch (javax.jms.JMSException jmex) {
                System.out.println("ERROR jms: " + jmex.getMessage());
            catch (java.lang.NullPointerException nullex) {
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    {code}
    I think the problem is because i don't put destination address. if it is so, the true where do I put this address?. if not where is the problem?
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advanced.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

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