How to set message in jms?

How to set message in jms?

Context ctx = new InitialContext();

ConnectionFactory connectionFactory = (ConnectionFactory)ctx.lookup("jms/ConnectionFactory");

Queue myQueue = (Queue) ctx.lookup("jms/MyQueue");

Connection connection = connectionFactory.createConnection();

Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

MessageProducer producer = session.createProducer(myQueue);

producer.send(message);