An example to publish a message to RabbitMQ

Producer

public class Producer {
    private final static String QUEUE_NAME = "Greet";

    public static void main(String[] argumentVariables)
            throws java.io.IOException {
        //opens a new connection with the broker
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        factory.setUsername("guest");
        factory.setPassword("guest");
        Connection connection = factory.newConnection();

        //create a new channel and uses and internal channel number
        Channel channel = connection.createChannel();

        //declaring a queue with given String queue, boolean durable, boolean exclusive, boolean autoDelete,
       // Map<String, Object> arguments. AMQP Command queue.declare
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        String message = "Hello World!";

        //basic.publish command to put a message in the default exchange
        channel.basicPublish("", QUEUE_NAME, null, message.getBytes());
        System.out.println(" [x] Sent '" + message + "'");

        //Lets close the channel and connection once we are finished with the job.
        channel.close();
        connection.close();

    }
}