Connection pools

// Use JNDI to find the connection factory and the destination 

  Context ctx = new InitialContext(); 
  QueueConnectionFactory factory = (QueueConnectionFactory) ctx.lookup("java:comp/env/jms/theFactory");
  Queue queue = (Queue) ctx.lookup("java:comp/env/jms/theQueue"); 

  // create a connection, session, sender, and the message QueueConnection conn; 
  QueueConnection conn = factory.createQueueConnection("myUserName", "myPassword"); 
  QueueSession session = connection.createQueueSession (false, Session.AUTO_ACKNOWLEDGE); 
  QueueSender sender = session.createSender(queue); 
  ...
  // start up the connection, send the message 
  connection.start(); 
  sender.send("Message"); 
  connection.stop(); 

  // now close all resources to ensure that native resources are released 
  sender.close(); 
  session.close(); 
  connection.close();