The JMS API is an integral part of the Java 2 Platform, Enterprise Edition. Developed by Sun Microsystems in close cooperation with enterprise messaging partners, asynchronous communication between components in a distributed computing environment, JMS works together with other technologies to provide reliable. It delivers new, powerful tool for enterprise messaging the cornerstone of today's enterprise applications.

• Create and run JMS client program.
• Uses the JMS API with the J2EE platform.
• Consumes messages asynchronously with a message-driven bean.
• Produce messages from an application client and from a session bean.
• Access an entity bean from a message-driven bean.
• Create applications for the J2EE platform that use the JMS API to Consume messages Produce messages Access an entity bean.

The basic building blocks of a JMS application consist of the following elements:

• Administered objects: connection factories and destinations
• Connections
• Sessions
• Message producers
• Message consumers
• Messages.