How to test a class that is started via a Servlet.

Hi,

I have the following class MessageManager ( which sends messages in
different formats).
In weblogic 8.1 I use a servelet to call start() and stop() to
activate/deactivate my MessageManager.

How can I activate the 'public void onRecMsg(String msg)'-method when
server is up and running?
Can I use a junit test and execute it in runtime or do I need a
Servlet that calls this method with a message?

Appreciate your advice.

cheers,

//mikael

MessageManager
=============
public class MessageManager implements MessageInterface {
    private static MessageQueue msgSession = null;
    private int msgFormat = MessageTypes.XML;
    private static Logger LOG = Logger.getLogger(MessageManager.class);

    public MessageManager(int msgFormat) {
       this.msgFormat = msgFormat;
    }

    public void start() {
       try {
              if (jmsSession == null) {
                 msgSession = new MessageQueue();
                 msgSession.create();
                 msgSession.setReceiver(McxJndiName.JMS_MSG_QUEUE_NAME,
this);
           }

            switch (msgFormat) {
            case MessageTypes.XML:
                sender = new XMLSender();
                break;
            case MessageTypes.TXT:
                sender = new TXTSender();
                break;
            default:
                break;
            }

        } catch (Exception ex) {
            LOG.error("Failed to start " + ex);
            stop();
        }

    }

    public void stop() {
    try {
        if (msgSession != null)
            msgSession.close();
        } catch (Exception ex) {
            LOG.error("Could not close message session" + ex);
        }

    sender.close();
    }

    public void onRecMsg(String msg) {
       sender.send(msg);

    }

}