Types of JMSContext in JMS 2.0

If you follow Java EE, the simplified API components in JMS 2.0 (Java EE 7) will not be unknown to you. One of the important interfaces which forms a part of the simplified API is the javax.jms.JMSContext interface.

JMSContext can be categorized in to two types depending on how it’s instance is obtained and managed (life cycle) – Container managed and Application managed

Application Managed

Let’s look at a code snippet


In this case, an instance of JMSContext was obtained using ConnectionFactory and hence needs to be closed by the application code. The container will not manage it’s lifecycle

Container Managed

If you use @Inject to allow the container to inject the JMSContext instance, the container assumes full responsibility for it’s lifecycle.


If you call close() on a container managed JMSContext, you will end up with this exception – javax.jms.IllegalStateRuntimeException: This method is not permitted on a container-managed (injected) JMSContext.


In the previous example, the container automatically uses the default Connection Factory (as per Java EE 7). You can also leverage @JMSConnectionFactory annotation (another useful addition to JMS 2.0) to specify a Connection Factory of your choice.

public class TheBestEmailService {
//container managed
JMSContext ctx;
Destination emailQ;
public void send(String email) {
Session session;
try {
ctx.createProducer().send(emailQ, email);
System.out.println("Message Sent to queue – " + ((Queue) emailQ).getQueueName());
} catch (JMSException ex) {
Logger.getLogger(TheBestEmailService.class.getName()).log(Level.SEVERE, null, ex);
throw new JMSRuntimeException(ex.getMessage(), ex.getMessage(), ex);

That’s it for now.. Cheers !


About Abhishek

Loves Go, NoSQL DBs and messaging systems
This entry was posted in Java, Java EE and tagged , , , , . Bookmark the permalink.

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