Using the JMS 2.0 simplified API
to send a message (JavaEESenderNew)

Here is a simple Java EE session bean which demonstrates how to use the JMS 2.0 simplified API to send a message.

@Stateless
@LocalBean
public class JavaEESenderNew {

    @Resource(lookup = "java:global/jms/demoConnectionFactory")
    ConnectionFactory connectionFactory;
    
    @Resource(lookup = "java:global/jms/demoQueue")
    Queue demoQueue;
    
    public void sendMessageNew(String body) {
        try (JMSContext context = connectionFactory.createContext();){
            context.createProducer().send(demoQueue, body);
        } catch (JMSRuntimeException ex) {
            Logger.getLogger(getClass().getName()).log(Level.SEVERE, null, ex);
        }
    }
}
}

This example shows:

• Use of a JMS 2.0 JMSContext for sending a message instead of separate Connection and Session objects
• 2 lines of code to send a message (excluding exception handling)
• JMSContext is created explicitly (in a "try-with-resources" block)
• No need to specify transacted and acknowledgeMode parameters (unlike with createSession) in Java EE
• No need to create a TextMessage object: message payload is passed directly to the send method
• No need to call context.close() as the use of a "try-with-resources" block means the JMSContext is automatically closed at the end of the block
• Includes a catch block to catch and log exceptions.
  

This example is for Java EE but the API for Java SE is similar

 Now compare this with using the JMS 2.0 simplified API and injection do the same thing

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