# Embedded JMS Server Example

This examples shows how to setup and run an embedded JMS server using HornetQ.

HornetQ was designed using POJOs (Plain Old Java Objects) which means embedding HornetQ in your own application is as simple as instantiating a few objects.

This example does not use any configuration files. The server is configured using POJOs and can be easily ported to any dependency injection framework.
We will setup and run a full-fledged JMS server which binds its JMS resources to JNDI and can be accessed by remote clients.

## Example step-by-step

To run the example, simply type `./build.sh` (or `build.bat` on windows) from this directory

1. Create HornetQ core configuration, and set the properties accordingly

                Configuration configuration = new ConfigurationImpl();
                configuration.setPersistenceEnabled(false);
                configuration.setSecurityEnabled(false);
                configuration.getAcceptorConfigurations().add(new TransportConfiguration(NettyAcceptorFactory.class.getName()));
                Configuration configuration = new ConfigurationImpl();

2. Create the HornetQ core server

                HornetQServer hornetqServer = HornetQ.newHornetQServer(configuration);

3. Create and start the JNDI server (using JBoss JNDI implementation)

                System.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
                NamingBeanImpl naming = new NamingBeanImpl();
                naming.start();
                Main jndiServer = new Main();
                jndiServer.setNamingInfo(naming);
                jndiServer.setPort(1099);
                jndiServer.setBindAddress("localhost");
                jndiServer.setRmiPort(1098);
                jndiServer.setRmiBindAddress("localhost");
                jndiServer.start();

4. Create the JMS configuration

                JMSConfiguration jmsConfig = new JMSConfigurationImpl();

5. Configure context used to bind the JMS resources to JNDI

                Hashtable<String, String> env = new Hashtable<String, String>();
                env.put("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
                env.put("java.naming.provider.url", "jnp://localhost:1099");
                env.put("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
                Context context = new InitialContext(env);
                jmsConfig.setContext(context);

6. Configure the JMS ConnectionFactory

                TransportConfiguration connectorConfig = new TransportConfiguration(NettyConnectorFactory.class.getName());
                ConnectionFactoryConfiguration cfConfig = new ConnectionFactoryConfigurationImpl("cf", connectorConfig, "/cf");
                jmsConfig.getConnectionFactoryConfigurations().add(cfConfig);

7. Configure the JMS Queue

                QueueConfiguration queueConfig = new QueueConfigurationImpl("queue1", null, false, "/queue/queue1");
                jmsConfig.getQueueConfigurations().add(queueConfig);

8. Start the JMS Server using the HornetQ core server and the JMS configuration

                JMSServerManager jmsServer = new JMSServerManagerImpl(hornetqServer, jmsConfig);
                jmsServer.start();

At this point the JMS server is started and any JMS clients can look up JMS resources from JNDI to send/receive messages from the server. To keep the example simple, we will send and receive a JMS message from the same JVM used to run the JMS server.

9. Lookup JMS resources defined in the configuration

                ConnectionFactory cf = (ConnectionFactory)context.lookup("/cf");
                Queue queue = (Queue)context.lookup("/queue/queue1");

10. Send and receive a message using JMS API

See the Queue Example for detailed steps to send and receive a JMS message

Finally, we stop the JMS server and its associated resources.

11. Stop the JMS server

                jmsServer.stop();

12. Stop the JNDI server

                naming.stop();
                jndiServer.stop();