Using MQEnvironment class in a java program that is using MQ Series jar files

Posted on 2009-04-07
Last Modified: 2012-05-06
I am new to working with MQ Series programming. I need to hava java program put a message on an mq series queue and then retrieve the answer off of another queue.  To set up parameters for the qManager connection I need to set values in a class named MQEnvironment. The syntax is: = "whatever";

When I do this I get a "NoClassDefFoundError /javaa/resource/ResourceExeption" thown by


public class testMQ {


	// settings for sean kendall's pc local MQ Series tests:

	String requestQManager = "";

	String requestQueueName = "";

	String replyQManager = "";

	String replyQueueName = "";


	public static void main(String args[]) {

		new testMQ();



	public testMQ() {

		try {

			// The Using Java with MQ Series pdf states that channel must be set to

			// the channel name (String) and port to the port number (int) the MQ Series

			// server is listening on


			// settings for sean kendall's pc local MQ Series tests:

			//requestQManager = "QM_SKENDALL";

			//requestQueueName = "SYSTEM.DEFAULT.LOCAL.QUEUE";

			//MQEnvironment.hostname = "localhost";


			// settings for THome's MQ environment:

			String requestQManager = "I2MMA1"; = "CLIENT_CMP";

			MQEnvironment.port = 1420;

			MQEnvironment.hostname = "";





			//IMPORTANT: all the settings above must be completed befor declaring a new MQQueueManager


			//declare qManagers

			MQQueueManager requestQMgr; 

			MQQueueManager replyQMgr; 



			// Create a connection to the queue managers

			requestQMgr = new MQQueueManager(requestQManager);

			replyQMgr = new MQQueueManager(replyQManager);


			// Set up the options on the queue we wish to open...

			// Note. All MQSeries Options are prefixed with MQC in Java.

			int openOptions = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_OUTPUT ;


			// Now specifythe queue that we wish to open,

			// and the open options...

			//MQQueue system_default_local_queue = requestQMgr.accessQueue(requestQueueName, openOptions);

			MQQueue requestQueue = requestQMgr.accessQueue(requestQueueName, openOptions);

			MQQueue replyQueue = replyQMgr.accessQueue(replyQueueName, openOptions);


			// Define a simple MQSeries message, and write some text in UTF format..

			//MQMessage hello_world = new MQMessage();

			MQMessage requestMsg = new MQMessage();

			MQMessage replyMsg = new MQMessage();


			//hello_world.writeUTF("Hello World!");

			requestMsg.writeUTF("Give Me Something Back");


			// specifythe message options...

			MQPutMessageOptions pmo = new MQPutMessageOptions(); // accept the defaults, same as MQPMO_DEFAULT

			// put the message on the queue





			// Set the get message options...

			MQGetMessageOptions gmo = new MQGetMessageOptions(); // accept the defaults

			// same as MQGMO_DEFAULT

			// get the message off the queue...

			//system_default_local_queue.get(retrievedMessage, gmo);

			replyQueue.get(replyMsg, gmo);



			// And prove we have the message bydisplay ing the UTF message text

			String msgText = replyMsg.readUTF();

			System.out.println("The message is: " + msgText);

			// Close the queue...





			// Disconnect from the queue manager





		} catch (Exception e) {

			System.out.println("An exception occurred: " + e.toString());




			// If an error has occurred in the above, tryto identifywhat went wrong

			// Was it an MQSeries error?

			catch (MQException ex) {

				System.out.println("An MQSeries error occurred : Completion code " +

				ex.completionCode + " Reason code " + ex.reasonCode);


			// Was it a Java buffer space error?

			catch ( ex) {

				System.out.println("An error occurred whilst writing to the message buffer: " + ex);



		} // testMQ constructor

} // end of sample

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Question by:skendall66
  • 2
LVL 12

Accepted Solution

Gibu George earned 250 total points
Comment Utility
You need to find the jca.jar and add that to your classpath
LVL 12

Expert Comment

by:Gibu George
Comment Utility
I am not sure it is there in jca.jar, the ResourceException is a part of JavaConnector API so I assumed it will be in that.

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