protected void createClients() throws Exception {
ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(clientUrl);
for (int i = 0; i < NUMBER; i++) {
ActiveMQConnection c = (ActiveMQConnection) factory.createConnection();
c.start();
Session s = c.createSession(false, Session.AUTO_ACKNOWLEDGE);
Queue queue = s.createQueue(getClass().getName());
MessageConsumer consumer = s.createConsumer(queue);
connections.add(c);
}