JMS::Websphere6.1::Problem with context lookup the Queue

Hi,

I have a class which tries to look up a Queue/QueueConnectionFactory and then submits message.
The code works fine with Weblogic9.x but throws the following exception in Webshpere6.1.
com.ibm.mq.jms.MQQueue incompatible with javax.jms.Queue

Code:

// get the initial context
		InitialContext ctx = new InitialContext();
		
		QueueConnectionFactory connFactory = null;
		Queue queue = null;
		queue = (Queue) ctx.lookup(queueName); //Throws exception at this point...
		// Rest of the code
		connFactory = (QueueConnectionFactory) ctx.lookup(queueConnFactoryName);
		// create a queue connection
		QueueConnection queueConn = connFactory.createQueueConnection();
		// create a queue session
		QueueSession queueSession = queueConn.createQueueSession(transacted, acknowledgeMode);
		// create a queue sender
		QueueSender queueSender = queueSession.createSender(queue);
		queueSender.setDeliveryMode(deliveryMode);
		
		/*********************************************************************/
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		
		DocumentBuilder builder = factory.newDocumentBuilder();
		
		TextMessage message;
		message = queueSession.createTextMessage(argMesg);

/*********************************************************************/
		// send the message
		queueSender.send(message);
		// close the queue connection
		queueConn.close();

Any help would be appreciated.

Can you provide me full error, which you are getting..

Ideally this code should work without any exception, because com.ibm.mq.jms.MQQueue implements javax.jms.Queue. please share full exception stack trace.

Thanks,
Ankit

I found the reason by opening a PMR with IBM.

Reason: If a .jar file contains a Java Extension class (javax.*.class) file which is also provided by WebSphere, then it must not be included in your Shared Library or application, or else a ClassCastException or similar error will occur. If the javax.*.class is NOT provided by WebSphere Application Server, then feel free to use that .jar in your application or Shared Library.