Exception or no? Somebody writing JNDI code has a tough time deciding...

Question

I have developed a new form of J2EE point-to-point communication using JMS!
Step 1. I push the green 'go' button in netbeans 5.5.1, which causes my application to be deployed. After much JavaApplicationServer feedback, things finally get around to kicking off my ContextListener's contextInitialized() method.
It instantiates the following class:
import javax.annotation.Resource;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Message;
import javax.jms.Queue;
import javax.jms.Session;
public class LogClient
    implements Log
    //Resource injection is not currently supported for pojos.
    //@Resource(name="ConnectionFactory")
    private ConnectionFactory connectionFactory;
    //@Resource(mappedName="jms/LogMDBQueue")
    private Queue queue;
    private Connection          connection;
    private Session             session;
    private MessageProducer     messageProducer;
    private int      logLevel = 5;
    private String   idString = "";
    public LogClient(
            ConnectionFactory connectionFactory,
            Queue             queue,
            String            idString
        if (connectionFactory == null)
            throw new NullPointerException("LogMDBClient(): null 'connectionFactory'");
        this.connectionFactory = connectionFactory;
        if (queue == null)
            throw new NullPointerException("LogMDBClient(): null 'queue'");
        this.queue = queue;
        if (idString != null)
            this.idString = idString;
        try {
            connection = connectionFactory.createConnection();       
            session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);               
            messageProducer = session.createProducer(queue);
        catch (JMSException exception){
            System.out.println("LogEJBClient: JMSException while connecting.");
            System.out.println("LogEJBClient: " + exception.getMessage());
        out("LogMDBClient(): Connected");
    public void
    finalize()
        try {
            session.close();
        catch (Exception exception){
            //Do nothing.
    //Gets the verbosity level
    public int
    getLogLevel(){
        return logLevel;
    //Sets the verbosity level
    public void
    setLogLevel(
            int logLevel
        this.logLevel = logLevel;
    //Outputs to the io element
    public void
    out(
            String  outString,
            int     level
        if (session == null){
            System.out.println("LogEJBClient.out(): not connected.");
            System.out.println("LogEJBClient.out(): Outgoing message was - " + outString);
            return;
        if (level > this.logLevel)
            return;
        if (outString == null)
            throw new NullPointerException("LogEJBClient.out(): null 'outString'");
        try {
            outString = idString + " ~ "  + outString;
            Message message = session.createTextMessage();                       
            message.setIntProperty("logLevel", level);
            message.setStringProperty("message", outString);       
            messageProducer.send(message);       
        catch (JMSException exception){
            System.out.println("LogClient.out(): JMSException while sending message.");
            System.out.println("LogClient.out(): " + exception.getMessage());
     //...this class connects properly to the specified & configured JNDI resources.
Step 2: My contextListener does the following (Remembering that the aforementioned class is an implementation of the interface "Log")
        System.out.println("Startup.doInit(): Attached to LogServer. Further messages will be directed to LogServer.");       
        log.out("Startup.doInit(): Logging begins.");
        log.out("Startup.doInit(): Done.");Step 3: After Netbeans is done deploying my war, it gets around to deploying my application client, which implements the server for this class:
public class LogServer        
    private ConnectionFactory   connectionFactory;
    private Connection          connection;
    private Queue               logQueue;
    private MessageConsumer     messageConsumer;
    private Session             session;       
    private LogListener         logListener = new LogListener(Statglob.log);
    private Log log                 = Statglob.log;   
    private int logLevel            = 3;
    public LogServer() {                       
        InitialContext initialContext;
        try {
            initialContext = new InitialContext();
        } catch (NamingException exception) {
            log.out("LogServer(): Could not get initial context.");
            return;
        try {           
            connectionFactory = (ConnectionFactory) initialContext.lookup(Statglob.config.adminConnectionFactoryJNDI);
        catch (NamingException exception) {
            log.out("LogServer: Could not attach to ConnectionFactory at " + Statglob.config.adminConnectionFactoryJNDI);
            log.out("LogServer: " + exception.getMessage());
            return;
        try {
            logQueue = (Queue) initialContext.lookup(Statglob.config.logQueueJNDI);           
        catch (NamingException exception) {
            log.out("LogServer: Could not attach to logQueue at " + Statglob.config.logQueueJNDI);
            log.out("LogServer: " + exception.getMessage());
            return;
        try {                  
            connection = connectionFactory.createConnection();
        catch (JMSException exception) {
            log.out("LogServer: Could not create JMS connection.");
            log.out("LogServer: " + exception.getMessage());
            return;
        try {           
            session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        catch (JMSException exception) {
            log.out("LogServer: Could not create JMS session.");
            log.out("LogServer: " + exception.getMessage());
            return;
        try {           
            messageConsumer = session.createConsumer(logQueue);           
        catch (JMSException exception){
            log.out("LogServer: Could not create JMS messageConsumer");
            log.out("LogServer: " + exception.getMessage());
            return;
        try {
            messageConsumer.setMessageListener(logListener);
            connection.start();
        catch (JMSException exception) {
            log.out("LogServer: Could not attach logListener.");
            log.out("LogServer: " + exception.getMessage());
            return;
        try {           
            Message message = session.createMessage();
            MessageProducer messageProducer = session.createProducer(logQueue);
            message.setStringProperty("message", "LogServer " + this.toString() + " <Loopback Test>");
            messageProducer.send(message);
            messageProducer.close();
        catch (JMSException exception) {
            log.out("LogServer: Exception during self-test.");
            log.out("LogServer: " + exception.getMessage());
            return;
        log.out("LogServer " + this.toString() + " attached at " + Statglob.config.logQueueJNDI);
    public void
    finalize()
        try {
            connection.stop();
            connection.close();
        catch (Exception exception){}
}up to this point, everthing is groovy. I get the messages that the servletContext listener posted to the Queue...
but then things turn not-so-groovy. The last thing I see is <Loopback Test>.
No matter what is sent from the client side, the 'logListener' is not invoked. Nothing happens... until
Step 4: I re-deploy the application client (which contains 'LogServer')
Step 5: I get this bright red error message, which, sounds a little unsure of itself... (generally, the word 'maybe' is not such a good thing to be seeing in a stack-trace)
Aug 6, 2007 3:26:43 AM com.sun.enterprise.naming.SerialContext lookup
SEVERE: NAM0004: Exception during name lookup : {0}
java.rmi.RemoteException: CORBA UNKNOWN 1398079690 Maybe; nested exception is:
        org.omg.CORBA.UNKNOWN: ----------BEGIN server-side stack trace----------
org.omg.CORBA.UNKNOWN:   vmcid: SUN  minor code: 202 completed: Maybe
        at com.sun.corba.ee.impl.logging.ORBUtilSystemException.runtimeexception(ORBUtilSystemException.java:8946)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.convertThrowableToSystemException(CorbaMessageMediatorImpl.java:1943)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(CorbaMessageMediatorImpl.java:1893)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(CorbaMessageMediatorImpl.java:1846)
        at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:263)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1705)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1565)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:947)
        at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:178)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:717)
        at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.dispatch(SocketOrChannelConnectionImpl.java:473)
        at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.doWork(SocketOrChannelConnectionImpl.java:1270)
        at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:479)
Caused by: java.lang.InternalError: Error loading com.sun.corba.ee.impl.io.IIOPOutputStream
        at com.sun.corba.ee.impl.io.ValueHandlerImpl$StreamFactory.run(ValueHandlerImpl.java:839)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.createOutputStream(ValueHandlerImpl.java:795)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValueWithVersion(ValueHandlerImpl.java:198)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValue(ValueHandlerImpl.java:146)
        at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.writeRMIIIOPValueType(CDROutputStream_1_0.java:787)
        at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:836)
        at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:850)
        at com.sun.corba.ee.impl.encoding.CDROutputStream.write_value(CDROutputStream.java:243)
        at com.sun.corba.ee.impl.corba.TCUtility.marshalIn(TCUtility.java:134)
        at com.sun.corba.ee.impl.corba.AnyImpl.write_value(AnyImpl.java:581)
        at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_any(CDROutputStream_1_0.java:569)
        at com.sun.corba.ee.impl.encoding.CDROutputStream.write_any(CDROutputStream.java:216)
        at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAny(Util.java:363)
        at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.write(DynamicMethodMarshallerImpl.java:256)
        at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.writeResult(DynamicMethodMarshallerImpl.java:430)
        at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:125)
        at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:650)
        at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:193)
        ... 8 more
Caused by: java.lang.ThreadDeath
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1332)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1292)
        at com.sun.corba.ee.spi.orbutil.misc.ORBClassLoader.loadClass(ORBClassLoader.java:22)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl$StreamFactory.run(ValueHandlerImpl.java:833)
        ... 26 more
----------END server-side stack trace----------  vmcid: SUN  minor code: 202 completed: Maybe
        at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.mapSystemException(Util.java:309)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:172)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:119)
        at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(BCELStubBase.java:197)
        at com.sun.enterprise.naming._SerialContextProvider_DynamicStub.lookup(_SerialContextProvider_DynamicStub.java)
        at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:309)
        at javax.naming.InitialContext.lookup(InitialContext.java:392)
        at VCMarkWeb.log.LogServer.<init>(LogServer.java:48)
        at VCMarkWeb.admin.Main.main(Main.java:52)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at com.sun.enterprise.util.Utility.invokeApplicationMain(Utility.java:232)
        at com.sun.enterprise.appclient.MainWithModuleSupport.<init>(MainWithModuleSupport.java:329)
        at com.sun.enterprise.appclient.Main.main(Main.java:180)
Caused by: org.omg.CORBA.UNKNOWN: ----------BEGIN server-side stack trace----------
org.omg.CORBA.UNKNOWN:   vmcid: SUN  minor code: 202 completed: Maybe
        at com.sun.corba.ee.impl.logging.ORBUtilSystemException.runtimeexception(ORBUtilSystemException.java:8946)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.convertThrowableToSystemException(CorbaMessageMediatorImpl.java:1943)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(CorbaMessageMediatorImpl.java:1893)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleThrowableDuringServerDispatch(CorbaMessageMediatorImpl.java:1846)
        at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:263)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequestRequest(CorbaMessageMediatorImpl.java:1705)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:1565)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleInput(CorbaMessageMediatorImpl.java:947)
        at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:178)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.handleRequest(CorbaMessageMediatorImpl.java:717)
        at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.dispatch(SocketOrChannelConnectionImpl.java:473)
        at com.sun.corba.ee.impl.transport.SocketOrChannelConnectionImpl.doWork(SocketOrChannelConnectionImpl.java:1270)
        at com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:479)
Caused by: java.lang.InternalError: Error loading com.sun.corba.ee.impl.io.IIOPOutputStream
        at com.sun.corba.ee.impl.io.ValueHandlerImpl$StreamFactory.run(ValueHandlerImpl.java:839)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.createOutputStream(ValueHandlerImpl.java:795)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValueWithVersion(ValueHandlerImpl.java:198)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl.writeValue(ValueHandlerImpl.java:146)
        at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.writeRMIIIOPValueType(CDROutputStream_1_0.java:787)
        at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:836)
        at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_value(CDROutputStream_1_0.java:850)
        at com.sun.corba.ee.impl.encoding.CDROutputStream.write_value(CDROutputStream.java:243)
        at com.sun.corba.ee.impl.corba.TCUtility.marshalIn(TCUtility.java:134)
        at com.sun.corba.ee.impl.corba.AnyImpl.write_value(AnyImpl.java:581)
        at com.sun.corba.ee.impl.encoding.CDROutputStream_1_0.write_any(CDROutputStream_1_0.java:569)
        at com.sun.corba.ee.impl.encoding.CDROutputStream.write_any(CDROutputStream.java:216)
        at com.sun.corba.ee.impl.javax.rmi.CORBA.Util.writeAny(Util.java:363)
        at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl$10.write(DynamicMethodMarshallerImpl.java:256)
        at com.sun.corba.ee.impl.presentation.rmi.DynamicMethodMarshallerImpl.writeResult(DynamicMethodMarshallerImpl.java:430)
        at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:125)
        at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatchToServant(CorbaServerRequestDispatcherImpl.java:650)
        at com.sun.corba.ee.impl.protocol.CorbaServerRequestDispatcherImpl.dispatch(CorbaServerRequestDispatcherImpl.java:193)
        ... 8 more
Caused by: java.lang.ThreadDeath
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1332)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1292)
        at com.sun.corba.ee.spi.orbutil.misc.ORBClassLoader.loadClass(ORBClassLoader.java:22)
        at com.sun.corba.ee.impl.io.ValueHandlerImpl$StreamFactory.run(ValueHandlerImpl.java:833)
        ... 26 more
----------END server-side stack trace----------  vmcid: SUN  minor code: 202 completed: Maybe
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at com.sun.corba.ee.impl.protocol.giopmsgheaders.MessageBase.getSystemException(MessageBase.java:933)
        at com.sun.corba.ee.impl.protocol.giopmsgheaders.ReplyMessage_1_2.getSystemException(ReplyMessage_1_2.java:100)
        at com.sun.corba.ee.impl.protocol.CorbaMessageMediatorImpl.getSystemExceptionReply(CorbaMessageMediatorImpl.java:593)
        at com.sun.corba.ee.impl.protocol.CorbaClientRequestDispatcherImpl.processResponse(CorbaClientRequestDispatcherImpl.java:429)
        at com.sun.corba.ee.impl.protocol.CorbaClientRequestDispatcherImpl.marshalingComplete(CorbaClientRequestDispatcherImpl.java:321)
        at com.sun.corba.ee.impl.protocol.CorbaClientDelegateImpl.invoke(CorbaClientDelegateImpl.java:194)
        at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.privateInvoke(StubInvocationHandlerImpl.java:159)
        ... 14 moreStep 6: Curse vehemently.
Step 7. Restart Java Application Server...
Step 8. The web container kicks off again, and when things finally get around to my application client, all of my messages are delivered and processed, including the messages that were sent pre-restart...
If anybody has any insight as to why 'LogServer' won't process any messages that are sent after it has started... or if anybody knows why I get that exception, I'd love to hear it. Thanks!

Answer 1

Note: This thread was originally posted in the [Annotation Processing|http://forums.sun.com/forum.jspa?forumID=514] forum, but moved to this forum for closer topic alignment.