java - How to make a JMS Producer to listen to a Response back from Consumer using TemporaryQueue? -

i made java component in mule flow sends message queue, want programatically instead of using mule jms component.

from producer got code:

@override public object oncall(muleeventcontext eventcontext) throws exception {     string payload = eventcontext.getmessage().getpayloadasstring();     jmsconnector amqconnector = (jmsconnector) eventcontext.getmulecontext().getregistry().lookupconnector("active_mq");     connectionfactory factory = amqconnector.getconnectionfactory();     connection connection;       connection = factory.createconnection();      try {         connection.start();         session session = connection.createsession(false, session.auto_acknowledge);         queue queue = session.createqueue("examplequeue");          messageproducer producer = session.createproducer(queue);         temporaryqueue replyqueue = session.createtemporaryqueue();          textmessage message = session.createtextmessage(payload);         message.setjmsreplyto(replyqueue);         message.setjmsdestination(queue);         message.setjmscorrelationid("testid");         producer.send(message, deliverymode.non_persistent, 0, 5000);          messageconsumer consumer = session.createconsumer(replyqueue);         messagelistener listener = consumer.getmessagelistener();         listener.onmessage(message);        }finally {         connection.close();     }      return eventcontext; } 

now, consumer got normal mule jms component listening same queue (examplequeue).

now, want request-response. when run now, i'm getting nullpointerexception @ line messagelistener listener = consumer.getmessagelistener();

how can make client producer listening temporaryqueue until gets response message?

thanks

made :d

had add this:

messageconsumer consumer = session.createconsumer(replyqueue);                   textmessage receivedmessage = (textmessage) consumer.receive();              text = receivedmessage.gettext(); 

in order text consumer!