Java Messaging Service (JMS) - I

JMS is a collection of interfaces that define the specifications of messaging clients to use when there are communicating with messaging systems. It is much similar to the way JDBC abstract relational database access.

JMS API supports three major types of messaging systems. Those are General messaging applications, Point-to-Point applications and Publish-Subscribe applications. In order to build a general messaging application, there are few components/interfaces that the application should adhere to its implementation,

• ConnectionFactory
• Destination
• Connection
• Session
• Message
• MessageProducer
• MessageConsumer

According to JMS specifications, both ConnectionFactory and Destination should be obtained through JNDI. Other objects can create with JMS vendor implementations. The sequence is like as follows, once we have a ConnectionFactory, we can create a Connection. With a Connection, we can create a Session. Once we have a Session, we can create a Message, MessageProducer or a MessageConsumer.

Overview of a general JMS application.

Here below I have attached a github link to a demo application that demonstrates the above connectivity.

GitHub repo: https://github.com/rootpox/JBoss-A-MQ-MessagingQueue

Image reference: Mark Richards, 2009. Java Message Service. Second Edition Edition. O'Reilly Media.