JMS error- Exception in thread "Main Thread" java.lang.NoClassDefFoundError

Question

Hi guys,
I am new to JMS programming and i'm have the following error...I have set up a simple weblogic server on my local machine and i am trying to send a message to a queue i've created on a JMS server. I am trying to manually run an example provided by BEA WebLogic... the code follows.
//package examples.jms.queue;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Hashtable;
import javax.jms.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
/** This example shows how to establish a connection
* and send messages to the JMS queue. The classes in this
* package operate on the same JMS queue. Run the classes together to
* witness messages being sent and received, and to browse the queue
* for messages. The class is used to send messages to the queue.
* @author Copyright (c) 1999-2006 by BEA Systems, Inc. All Rights Reserved.
public class QueueSend
  // Defines the JNDI context factory.
  public final static String JNDI_FACTORY="weblogic.jndi.WLInitialContextFactory";
  // Defines the JMS context factory.
  public final static String JMS_FACTORY="weblogic.examples.jms.QueueConnectionFactory";
  // Defines the queue.
  public final static String QUEUE="weblogic.examples.jms.exampleQueue";
  private QueueConnectionFactory qconFactory;
  private QueueConnection qcon;
  private QueueSession qsession;
  private QueueSender qsender;
  private Queue queue;
  private TextMessage msg;
   * Creates all the necessary objects for sending
   * messages to a JMS queue.
   * @param ctx JNDI initial context
   * @param queueName name of queue
   * @exception NamingException if operation cannot be performed
   * @exception JMSException if JMS fails to initialize due to internal error
  public void init(Context ctx, String queueName)
    throws NamingException, JMSException
    qconFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
    qcon = qconFactory.createQueueConnection();
    qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
    queue = (Queue) ctx.lookup(queueName);
    qsender = qsession.createSender(queue);
    msg = qsession.createTextMessage();
    qcon.start();
   * Sends a message to a JMS queue.
   * @param message  message to be sent
   * @exception JMSException if JMS fails to send message due to internal error
  public void send(String message) throws JMSException {
    msg.setText(message);
    qsender.send(msg);
   * Closes JMS objects.
   * @exception JMSException if JMS fails to close objects due to internal error
  public void close() throws JMSException {
    qsender.close();
    qsession.close();
    qcon.close();
/** main() method.
  * @param args WebLogic Server URL
  * @exception Exception if operation fails
  public static void main(String[] args) throws Exception {
    if (args.length != 1) {
      System.out.println("Usage: java examples.jms.queue.QueueSend WebLogicURL");
      return;
    System.out.println(args[0]);
    InitialContext ic = getInitialContext(args[0]);
    QueueSend qs = new QueueSend();
    qs.init(ic, QUEUE);
    readAndSend(qs);
    qs.close();
  private static void readAndSend(QueueSend qs)
    throws IOException, JMSException
    BufferedReader msgStream = new BufferedReader(new InputStreamReader(System.in));
    String line=null;
    boolean quitNow = false;
    do {
      System.out.print("Enter message (\"quit\" to quit): \n");
      line = msgStream.readLine();
      if (line != null && line.trim().length() != 0) {
        qs.send(line);
        System.out.println("JMS Message Sent: "+line+"\n");
        quitNow = line.equalsIgnoreCase("quit");
    } while (! quitNow);
  private static InitialContext getInitialContext(String url)
    throws NamingException
    Hashtable<String,String> env = new Hashtable<String,String>();
    env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
    env.put(Context.PROVIDER_URL, url);
    return new InitialContext(env);
}when i run the main method with args[0] = "t3://localhost:7001", i get the following errors:
Exception in thread "Main Thread" java.lang.NoClassDefFoundError: weblogic/security/subject/AbstractSubject
at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:117)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
at javax.naming.InitialContext.init(InitialContext.java:223)
at javax.naming.InitialContext.<init>(InitialContext.java:197)
at QueueSend.getInitialContext(QueueSend.java:122)
at QueueSend.main(QueueSend.java:91)
Could someone please help. thanks.

Answer 1

when i run the main method with args[0] = "t3://localhost:7001", i get the following errors:
Exception in thread "Main Thread" java.lang.NoClassDefFoundError: weblogic/security/subject/AbstractSubject
at weblogic.jndi.WLInitialContextFactory.getInitialContext(WLInitialContextFactory.java:117)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
at javax.naming.InitialContext.init(InitialContext.java:223)
at javax.naming.InitialContext.<init>(InitialContext.java:197)
at QueueSend.getInitialContext(QueueSend.java:122)
at QueueSend.main(QueueSend.java:91)
Could someone please help. thanks.This is Java 101:
http://publib.boulder.ibm.com/infocenter/wasinfo/v6r0/index.jsp?topic=/com.ibm.websphere.express.doc/info/exp/ae/rtrb_classload_viewer.html
You've got to have the WebLogic JAR that contains the necessary .class files in your CLASSPATH when you run.
Don't use a CLASSPATH environment variable; use the -classpath option when you run.
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