public void doSend() {

    QueueSession queueSession = null;
    QueueSender queueSender = null;
    TextMessage message = null;

    if (doSetup()) {

      try {
        queueConnection = queueConnectionFactory.createQueueConnection();
        queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
        queueSender = queueSession.createSender(queue);
        message = queueSession.createTextMessage();
        for (int i = 0; i < NUM_MSGS; i++) {
          message.setText("This is message " + (i + 1));
          System.out.println("Sending message: " + message.getText());
          queueSender.send(message);
        }

        /*
         * Send a non-text control message indicating end of messages.
         */
        queueSender.send(queueSession.createMessage());
      } catch (JMSException e) {
        log.error("JMS Send Exception occurred: " + e.toString());
      } finally {
        doCleanup();
      }
    }
  }
Exemple #2
0
  public static void main(String[] args) {
    try { // Create and start connection
      InitialContext ctx = new InitialContext();
      QueueConnectionFactory f = (QueueConnectionFactory) ctx.lookup("myQueueConnectionFactory");
      QueueConnection con = f.createQueueConnection();
      con.start();
      // 2) create queue session
      QueueSession ses = con.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      // 3) get the Queue object
      Queue t = (Queue) ctx.lookup("myQueue");
      // 4)create QueueSender object
      QueueSender sender = ses.createSender(t);
      // 5) create TextMessage object
      TextMessage msg = ses.createTextMessage();

      // 6) write message
      BufferedReader b = new BufferedReader(new InputStreamReader(System.in));
      while (true) {
        System.out.println("Enter Msg, end to terminate:");
        String s = b.readLine();
        if (s.equals("end")) break;
        msg.setText(s);
        // 7) send message
        sender.send(msg);
        System.out.println("Message successfully sent.");
      }
      // 8) connection close
      con.close();
    } catch (Exception e) {
      System.out.println(e);
    }
  }
  @AroundInvoke
  public Object checkArguments(InvocationContext ctx) throws Exception {
    try {
      log = Logger.getLogger(LogoutInterceptor.class);
      Object[] args = ctx.getParameters();
      String className = ctx.getTarget().getClass().getSimpleName();
      log.trace("Class name: " + className);
      String methodName = ctx.getMethod().getName();
      log.trace("Method: " + methodName);

      String sessionId = (String) args[0];
      if ((sessionId == null) || (sessionId.length() == 0)) {
        throw new Exception("sessionId should not be null");
      }

      cf = (QueueConnectionFactory) new InitialContext().lookup(QueueNames.CONNECTION_FACTORY);
      queue = (Queue) new InitialContext().lookup(QueueNames.LOGOUT_QUEUE);
      log.trace("Queue logout: " + queue.getQueueName());
      QueueConnection connection = cf.createQueueConnection();
      QueueSession session = connection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      QueueSender sender = session.createSender(queue);

      Message logoutMessage = session.createTextMessage(sessionId);
      Timestamp time = new Timestamp(new Date().getTime());
      // Messages will not accept timestamp property- must change to string
      logoutMessage.setStringProperty(PropertyNames.TIME, time.toString());
      sender.send(logoutMessage);
      session.close();

    } catch (Exception e) {
      log.fatal("Error in LogoutInterceptor", e);
    }
    return ctx.proceed();
  }
 public void sendException(QueueSession session, Queue queue, Throwable exception)
     throws JMSException {
   QueueSender sender = session.createSender(queue);
   ObjectMessage message = session.createObjectMessage(exception);
   try {
     sender.send(message);
   } finally {
     sender.close();
   }
 }
 private void sendMessage(List<LuceneWork> queue) throws Exception {
   ObjectMessage message = getQueueSession().createObjectMessage();
   final String indexName = org.hibernate.search.test.jms.master.TShirt.class.getName();
   message.setStringProperty(Environment.INDEX_NAME_JMS_PROPERTY, indexName);
   IndexManager indexManager =
       getExtendedSearchIntegrator().getIndexManagerHolder().getIndexManager(indexName);
   byte[] data = indexManager.getSerializer().toSerializedModel(queue);
   message.setObject(data);
   QueueSender sender = getQueueSession().createSender(getMessageQueue());
   sender.send(message);
 }
  /**
   * Envia un mensaje a JMS.
   *
   * @param mensaje
   */
  public void send(String mensaje) throws Exception {
    try {

      QueueSender queueSender = queueSession.createSender(cola);
      TextMessage textMessage = queueSession.createTextMessage(mensaje);
      queueSender.send(textMessage);
      queueSender.close();

    } catch (JMSException e) {
      e.printStackTrace();
    } finally {
      c.close();
    }
  }
  public void execute(JobExecutionContext context) throws JobExecutionException {

    QueueConnectionFactory qcf = null;
    QueueConnection conn = null;
    QueueSession session = null;
    Queue queue = null;
    QueueSender sender = null;
    InitialContext ctx = null;

    final JobDetail detail = context.getJobDetail();
    final JobDataMap jobDataMap = detail.getJobDataMap();

    try {

      qcf =
          (QueueConnectionFactory)
              ctx.lookup(jobDataMap.getString(JmsHelper.JMS_CONNECTION_FACTORY_JNDI));
      ctx = JmsHelper.getInitialContext(jobDataMap);

      if (JmsHelper.isDestinationSecure(jobDataMap)) {
        String user = jobDataMap.getString(JmsHelper.JMS_USER);
        String pw = jobDataMap.getString(JmsHelper.JMS_PASSWORD);
        conn = qcf.createQueueConnection(user, pw);
      } else {
        conn = qcf.createQueueConnection();
      }

      boolean useTransactions = JmsHelper.useTransaction(jobDataMap);
      int ackMode = jobDataMap.getInt(JmsHelper.JMS_ACK_MODE);
      session = conn.createQueueSession(useTransactions, ackMode);
      String queueName = jobDataMap.getString(JmsHelper.JMS_DESTINATION_JNDI);
      queue = (Queue) ctx.lookup(queueName);
      sender = session.createSender(queue);
      String factoryClass = jobDataMap.getString(JmsHelper.JMS_MSG_FACTORY_CLASS_NAME);
      JmsMessageFactory factory = JmsHelper.getMessageFactory(factoryClass);
      Message m = factory.createMessage(jobDataMap, session);
      sender.send(m);
    } catch (NamingException e) {
      throw new JobExecutionException(e.getMessage());
    } catch (JMSException e) {
      throw new JobExecutionException(e.getMessage());
    } catch (JmsJobException e) {
      throw new JobExecutionException(e.getMessage());
    } finally {
      JmsHelper.closeResource(sender);
      JmsHelper.closeResource(session);
      JmsHelper.closeResource(conn);
    }
  }
  public void onMessage(Message inMessage) {
    TextMessage msg = null;

    try {
      if (inMessage instanceof TextMessage) {
        msg = (TextMessage) inMessage;
        System.out.println("MESSAGE BEAN: Message received: " + msg.getText());
        long sleepTime = msg.getLongProperty("sleeptime");
        System.out.println("Sleeping for : " + sleepTime + " milli seconds ");
        Thread.sleep(sleepTime);
        queueConnection = queueConnectionFactory.createQueueConnection();
        queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
        queueSender = queueSession.createSender(queue);
        TextMessage message = queueSession.createTextMessage();

        message.setText("REPLIED:" + msg.getText());
        message.setIntProperty("replyid", msg.getIntProperty("id"));
        System.out.println("Sending message: " + message.getText());
        queueSender.send(message);
      } else {
        System.out.println("Message of wrong type: " + inMessage.getClass().getName());
      }
    } catch (JMSException e) {
      e.printStackTrace();
    } catch (Throwable te) {
      te.printStackTrace();
    } finally {
      try {
        queueSession.close();
        queueConnection.close();
      } catch (Exception e) {
      }
    }
  } // onMessage
Exemple #9
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 public void send(
     MessageProducer producer,
     Message message,
     Destination dest,
     boolean persistent,
     int priority,
     long ttl,
     boolean topic)
     throws JMSException {
   if (topic && producer instanceof TopicPublisher) {
     ((TopicPublisher) producer)
         .publish(
             (Topic) dest,
             message,
             (persistent ? DeliveryMode.PERSISTENT : DeliveryMode.NON_PERSISTENT),
             priority,
             ttl);
   } else if (producer instanceof QueueSender) {
     ((QueueSender) producer)
         .send(
             (Queue) dest,
             message,
             (persistent ? DeliveryMode.PERSISTENT : DeliveryMode.NON_PERSISTENT),
             priority,
             ttl);
   } else {
     throw new IllegalArgumentException("Producer and domain type do not match");
   }
 }
 private static void writeMessage(
     String message, QueueSession session, QueueSender sender, long seqNo) throws JMSException {
   System.out.println("Message is:" + message);
   Message reqMes = session.createTextMessage(message);
   reqMes.setLongProperty("SequenceNumber", seqNo);
   sender.send(reqMes);
 }
 /** This implementation overrides the superclass method to use JMS 1.0.2 API. */
 protected void doSend(MessageProducer producer, Message message) throws JMSException {
   if (isPubSubDomain()) {
     if (isExplicitQosEnabled()) {
       ((TopicPublisher) producer)
           .publish(message, getDeliveryMode(), getPriority(), getTimeToLive());
     } else {
       ((TopicPublisher) producer).publish(message);
     }
   } else {
     if (isExplicitQosEnabled()) {
       ((QueueSender) producer).send(message, getDeliveryMode(), getPriority(), getTimeToLive());
     } else {
       ((QueueSender) producer).send(message);
     }
   }
 }
Exemple #12
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 protected void send(final Message message) {
   try {
     m_sender.send(message);
   } catch (final Exception e) {
     getErrorHandler().error("Error publishing message", e, null);
   }
 }
 @AroundInvoke
 public Object log(InvocationContext context) throws Exception {
   System.out.println("---" + context.getMethod());
   QueueConnection conn = qcf.createQueueConnection();
   conn.start();
   QueueSession session = conn.createQueueSession(true, Session.SESSION_TRANSACTED);
   TextMessage msg = session.createTextMessage();
   msg.setText(
       context.getMethod().getDeclaringClass().getSimpleName()
           + ";"
           + context.getMethod().getName()
           + ";"
           + sessionContext.getCallerPrincipal().getName());
   QueueSender queueSender = session.createSender(queue);
   queueSender.send(msg);
   return context.proceed();
 }
 private void close(QueueSender sender) {
   try {
     if (sender != null) {
       sender.close();
     }
   } catch (Exception e) {
   }
 }
  /**
   * Sends a message to a queue.
   *
   * @param queueName
   * @param key Optional.
   * @param obj Mandatory.
   */
  public void sendMsgToQueue(final String queueName, final String key, final Serializable obj) {
    log.debug("sendMsgToQueue(queueName, key, obj)::started");
    QueueConnection conn = null;
    QueueSession session = null;
    QueueSender sender = null;

    try {
      final String jndiName = "queue/" + queueName;
      final Context ctx = getInitialContext(null);
      final QueueConnectionFactory factory =
          (QueueConnectionFactory) ctx.lookup(CONNECTION_FACTORY);
      conn = factory.createQueueConnection();
      session = conn.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      final Queue queue = (Queue) ctx.lookup(jndiName);
      sender = session.createSender(queue);

      ObjectMessage message = session.createObjectMessage();
      if (key == null) {
        message.setObject((Serializable) obj);
      } else {
        message.setObjectProperty(key, obj);
      }

      sender.send(message);

    } catch (NamingException e) {
      throw new LocatorException(
          "A naming exception occured while trying to send message "
              + obj
              + " to queue "
              + queueName,
          e);
    } catch (JMSException e) {
      throw new LocatorException(
          "A JMS exception occured while trying to send message " + obj + " to queue " + queueName,
          e);
    } finally {
      log.debug("sendMsgToQueue(queueName, key, obj)::finished");
      close(sender);
      close(session);
      close(conn);
    }
  }
Exemple #16
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  public void onMessage(Message message) {

    try {
      boolean accepted = false;

      // Get the data from the message
      MapMessage msg = (MapMessage) message;
      double salary = msg.getDouble("Salary");
      double expAmt = msg.getDouble("Years’ experience");

      // Determine whether to accept or decline the loan
      if (expAmt < 200000) {
        accepted = (salary / expAmt) > .25;
      } else {
        accepted = (salary / expAmt) > .33;
      }
      if (salary <= 32000) {
        accepted = true;
      } else {
        if (expAmt == 0) accepted = false;
        else accepted = ((double) (expAmt - 32000) / expAmt) < 3000.;
      }
      System.out.println(" Salary proposal is " + (accepted ? "Accepted!" : "Declined"));

      // Send the results back to the borrower
      TextMessage tmsg = qSession.createTextMessage();
      tmsg.setText(accepted ? "Accepted!" : "Declined");
      tmsg.setJMSCorrelationID(message.getJMSMessageID());

      // Create the sender and send the message
      QueueSender qSender = qSession.createSender((Queue) message.getJMSReplyTo());
      qSender.send(tmsg);

      System.out.println("\nWaiting for salary requests...");

    } catch (JMSException jmse) {
      jmse.printStackTrace();
      System.exit(1);
    } catch (Exception jmse) {
      jmse.printStackTrace();
      System.exit(1);
    }
  }
  /**
   * Send a message to controlQueue. Called by a subscriber to notify a publisher that it is ready
   * to receive messages.
   *
   * <p>If controlQueue doesn't exist, the method throws an exception.
   *
   * @param prefix prefix (publisher or subscriber) to be displayed
   * @param controlQueueName name of control queue
   */
  public static void sendSynchronizeMessage(String prefix, String controlQueueName)
      throws Exception {
    QueueConnectionFactory queueConnectionFactory = null;
    QueueConnection queueConnection = null;
    QueueSession queueSession = null;
    Queue controlQueue = null;
    QueueSender queueSender = null;
    TextMessage message = null;

    try {
      queueConnectionFactory = SampleUtilities.getQueueConnectionFactory();
      queueConnection = queueConnectionFactory.createQueueConnection();
      queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      controlQueue = getQueue(controlQueueName, queueSession);
    } catch (Exception e) {
      System.out.println("Connection problem: " + e.toString());
      if (queueConnection != null) {
        try {
          queueConnection.close();
        } catch (JMSException ee) {
        }
      }
      throw e;
    }

    try {
      queueSender = queueSession.createSender(controlQueue);
      message = queueSession.createTextMessage();
      message.setText("synchronize");
      System.out.println(prefix + "Sending synchronize message to " + controlQueueName);
      queueSender.send(message);
    } catch (JMSException e) {
      System.out.println("Exception occurred: " + e.toString());
      throw e;
    } finally {
      if (queueConnection != null) {
        try {
          queueConnection.close();
        } catch (JMSException e) {
        }
      }
    }
  }
Exemple #18
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  public void onMessage(Message message) {

    try {
      boolean accepted = false;

      // Get the data from the message
      MapMessage msg = (MapMessage) message;
      double salary = msg.getDouble("Salary");
      double loanAmt = msg.getDouble("LoanAmount");

      // Determine whether to accept or decline the loan
      if (loanAmt < 200000) {
        accepted = (salary / loanAmt) > .25;
      } else {
        accepted = (salary / loanAmt) > .33;
      }
      System.out.println(
          ""
              + "Percent = "
              + (salary / loanAmt)
              + ", loan is "
              + (accepted ? "Accepted!" : "Declined"));

      // Send the results back to the borrower
      TextMessage tmsg = qSession.createTextMessage();
      tmsg.setText(accepted ? "Accepted!" : "Declined");
      // tmsg.setJMSCorrelationID(message.getJMSMessageID());

      // Create the sender and send the message
      QueueSender qSender = qSession.createSender((Queue) message.getJMSReplyTo());
      qSender.send(tmsg);

      System.out.println("\nWaiting for loan requests...");

    } catch (JMSException jmse) {
      jmse.printStackTrace();
      System.exit(1);
    } catch (Exception jmse) {
      jmse.printStackTrace();
      System.exit(1);
    }
  }
Exemple #19
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  public boolean publishMessage(String textMessage) throws NamingException, JMSException {
    setInitialContext();
    setConnectionFactory();
    createQueueConnection();
    createQueueSession();
    lookupQueue();
    createQueueSender();

    qSender.send(createTextMessage(textMessage));

    return true;
  }
Exemple #20
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 /** @param failedMailId */
 public void callBack(String failedMailId) {
   try {
     Properties props = new Properties();
     props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
     props.setProperty("java.naming.provider.url", SenderConfig.getProp("callbackUrl"));
     props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming");
     InitialContext ctx = new InitialContext(props);
     QueueConnectionFactory factory = (QueueConnectionFactory) ctx.lookup("ConnectionFactory");
     QueueConnection queueConnection = factory.createQueueConnection();
     QueueSession queueSession =
         queueConnection.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
     Queue queue = (Queue) ctx.lookup("queue/" + SenderConfig.getProp("callbackJNDI"));
     ObjectMessage objMsg = queueSession.createObjectMessage();
     objMsg.setObject(failedMailId);
     QueueSender queueSender = queueSession.createSender(queue);
     queueSender.send(objMsg);
     queueSession.close();
     queueConnection.close();
   } catch (Exception e) {
     log.error("sendMail/SendMailListener/Exception: [" + failedMailId + "]", e);
   }
 }
Exemple #21
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  protected synchronized void closeConnection() {
    try {
      if (null != m_sender) m_sender.close();
      if (null != m_session) m_session.close();
      if (null != m_connection) m_connection.close();
    } catch (Exception e) {
      getErrorHandler().error("Error closing connection", e, null);
    }

    m_sender = null;
    m_session = null;
    m_connection = null;
  }
Exemple #22
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  public static void queueSend(
      QueueConnection cnn,
      String queueName,
      String payload,
      boolean transacted,
      int ack,
      String replyTo)
      throws JMSException {
    QueueSession session = cnn.createQueueSession(transacted, ack);
    Queue queue = session.createQueue(queueName);
    QueueSender sender = session.createSender(queue);
    TextMessage msg = session.createTextMessage();
    msg.setText(payload);
    msg.setJMSDeliveryMode(ack);
    if (replyTo != null) {
      msg.setJMSReplyTo(session.createQueue(replyTo));
    }

    sender.send(msg);
    sender.close();
    session.close();
  }
Exemple #23
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    public void publish(int nr) throws JMSException {
      if (producer == null) producer = ((QueueSession) session).createSender((Queue) destination);
      if (creator == null) throw new JMSException("Publish must have a MessageCreator set");

      creator.setSession(session);
      log.debug("Publishing " + nr + " messages");
      for (int i = 0; i < nr; i++) {
        if (qosConfig != null) {
          ((QueueSender) producer)
              .send(
                  creator.createMessage(i),
                  qosConfig.deliveryMode,
                  qosConfig.priority,
                  qosConfig.ttl);
        } else {
          ((QueueSender) producer).send(creator.createMessage(i));
        }

        messageHandled.incrementAndGet();
      }
      if (session.getTransacted()) session.commit();
      log.debug("Finished publishing");
    }
 /**
  * Overrides the superclass method to use the JMS 1.0.2 API to send a response.
  *
  * <p>Uses the JMS pub-sub API if the given destination is a topic, else uses the JMS queue API.
  */
 protected void sendResponse(Session session, Destination destination, Message response)
     throws JMSException {
   MessageProducer producer = null;
   try {
     if (destination instanceof Topic) {
       producer = ((TopicSession) session).createPublisher((Topic) destination);
       postProcessProducer(producer, response);
       ((TopicPublisher) producer).publish(response);
     } else {
       producer = ((QueueSession) session).createSender((Queue) destination);
       postProcessProducer(producer, response);
       ((QueueSender) producer).send(response);
     }
   } finally {
     JmsUtils.closeMessageProducer(producer);
   }
 }
 @Test(timeout = 30000)
 public void testSenderCloseAgain() throws Exception {
   // Close it again (closing the session should have closed it already).
   sender.close();
 }
 @Test(timeout = 30000, expected = javax.jms.IllegalStateException.class)
 public void testSenderGetQueueFails() throws Exception {
   sender.getQueue();
 }
Exemple #27
0
 public void send() throws JMSException {
   testSender.send(queueSession.createTextMessage("message for queue"));
 }
  public static void main(String[] args) throws Exception {
    InputStream is = TibcoSender.class.getClassLoader().getResourceAsStream("messages.properties");
    if (is == null) {
      System.out.println("message.properties must be in classpath");
      return;
    }
    Properties messages = new Properties();
    messages.load(is);
    is.close();
    QueueConnection queueCon = null;
    QueueSession queueSession = null;
    QueueSender sender = null;
    long idStart = 100003000l;
    Scanner in = new Scanner(System.in);
    System.out.print(
        "Enter amount of message you wish to send (set 0 to read amount from init.properties): ");
    int count = 0;
    try {
      count = in.nextInt();
    } catch (Exception e) {
      System.out.println("Error in reading input.");
    }
    Properties initial = new Properties();
    is = TibcoSender.class.getClassLoader().getResourceAsStream("init.properties");
    if (is != null) {
      initial.load(is);
      String value = initial.getProperty("start.id");
      if (value != null) idStart = Long.valueOf(value).longValue();
      value = initial.getProperty("count");
      if (value != null && count <= 0) count = Integer.valueOf(value).intValue();
    }

    if (args.length > 0) {
      try {
        idStart = Long.valueOf(args[0]);
        if (args.length > 1) count = Integer.valueOf(args[1]);
      } catch (Exception e) {
      }
    }
    initial.setProperty("count", "" + count);
    initial.setProperty("start.id", "" + (idStart + count));
    OutputStream os = null;
    if (is != null) {
      os =
          new FileOutputStream(
              new File(
                  TibcoSender.class.getClassLoader().getResource("init.properties").getPath()));
      is.close();
    } else {
      os = new FileOutputStream(new File("init.properties"));
    }
    initial.store(os, "");
    os.close();
    Properties config = new Properties();
    is = TibcoSender.class.getClassLoader().getResourceAsStream("config.properties");
    if (is != null) {
      config.load(is);
      is.close();
    }
    try {
      // messages

      // InitialContext properties
      Properties props = new Properties();
      props.setProperty(Context.INITIAL_CONTEXT_FACTORY, config.getProperty("JNDI_ICF"));
      props.setProperty(Context.PROVIDER_URL, config.getProperty("JNDI_URL"));

      // Jndi initialization
      InitialContext jndiContext = new InitialContext(props);

      // get the connection factory
      QueueConnectionFactory qcf =
          (QueueConnectionFactory) jndiContext.lookup(config.getProperty("JMS_QCF"));
      // and open a connection
      String user = config.getProperty("JMS_USER");
      String password = config.getProperty("JMS_PASSWORD");
      if (user != null && !user.isEmpty() && password != null && !password.isEmpty())
        queueCon = qcf.createQueueConnection(user, password);
      else queueCon = qcf.createQueueConnection();

      // Create a queue session using the connection
      queueSession = queueCon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);

      // get handle on queue, create a sender and send the message
      Queue topic = (Queue) jndiContext.lookup(config.getProperty("JMS_QUEUE"));
      sender = queueSession.createSender(topic);

      long i = 0; // new message index to be inserted into content of the message
      String[] cps = {
        "USD/HUF", "GBP/USD", "GBP/USD", "GBP/USD", "GBP/USD", "AUD/USD", "AUD/USD", "AUD/USD",
        "AUD/USD", "EUR/NOK", "USD/CZK", "EUR/USD", "EUR/JPY", "USD/HUF", "USD/SGD", "SGD/CHF"
      };
      String[] valuedates =
          new String
              [0]; // {"20110803", "20110810", "20110817", "20110824", "20110831", "20110913",
                   // "20110926"};
      String[] tenors = {"SPOT", "TN", "1W", "1W", "SPOT", "2W", "1M", "1W", "SPOT", "SPOT", "1W"};
      String[] clients = {
        "002-230", "003-0582", "004-0986", "Paypal1US", "003-0291"
      }; // FXB_OPERATINGCLIENT.APICLIENTID
      String tradeDate = date.format(new Date());

      for (int j = 0; j < count; j++) {
        i = idStart + j;
        String message =
            createMessage(
                idStart, i, j, cps, valuedates, tenors, clients, tradeDate, config, messages);

        // send message to topic at server.
        writeMessage(message, queueSession, sender, i);
      }

    } catch (Exception e) {
      System.out.println(e.getMessage());
      e.printStackTrace();
    } finally {
      // close sender, topic session and topic connection
      if (sender != null) {
        sender.close();
        sender = null;
      }
      if (queueSession != null) {
        queueSession.close();
        queueSession = null;
      }
      if (queueCon != null) {
        queueCon.close();
        queueCon = null;
      }
    }
  }