JMS Sample App

Question

Hello There.
I'm relatively new to J2EE, and have just downloaded and installed the software on my laptop - running Windows XP. I'm trying to get java to run the SimpleQueueSender class after starting j2ee on a separate window, and get the following error:
C:\jms_tutorial\examples\simple>java -Djava.endorsed.dirs=%J2EE_HOME%\lib\endors
ed -Djms.properties=%J2EE_HOME%\config\jms_client.properties SimpleQueueSender M
yQueue 3
Queue name is MyQueue
JNDI API lookup failed: javax.naming.CommunicationException: com.sun.enterprise.
resource.PoolingException
at com.sun.enterprise.naming.factory.JavaAppClientObjectHandler.createCo
nnectionFactory(JavaAppClientObjectHandler.java:194)
at com.sun.enterprise.naming.factory.ConnectorObjectFactory.getObjectIns
tance(ConnectorObjectFactory.java:89)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:3
01)
at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:124
at javax.naming.InitialContext.lookup(InitialContext.java:347)
at SimpleQueueSender.main(SimpleQueueSender.java:102)
Caused by: java.lang.ClassNotFoundException: com.sun.jms.connector.ra.JMSManaged
QueueConnectionFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:198)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:217)
at com.sun.enterprise.naming.factory.JavaAppClientObjectHandler.createCo
nnectionFactory(JavaAppClientObjectHandler.java:179)
... 5 more
I do not know why this is happening. I cannot find the class 'com.sun.jms.connector.ra.JMSManagedQueueConnectionFactory' anywhere.
Owen.

Answer 1

The problem seems to be that you are using the Java 2, Enterprise Edition (J2EE) SDK, version 1.4 Beta, but are following the instructions in the JMS Tutorial that goes with version 1.3.1.
Please use the revised tutorial at http://java.sun.com/j2ee/1.4/docs/tutorial/index.html. See the section on Java Message Service Technology.
You need an additional JAR file in your classpath, %J2EE_HOME%\lib\system\jmsra.jar.
I hope this is helpful.
Kim Haase
Technical Writer
Sun Microsystems, Inc.