Message topics

Message topics are used when our JMS code uses the Publish/Subscribe (pub/sub) messaging domain. When using this messaging domain, the same message can be sent to all subscribers to the topic.

Sending messages to a message topic

The following example illustrates how to send messages to a message topic:

package net.ensode.javaee8book.jmspubsubproducer; 
 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.annotation.Resource; 
import javax.enterprise.context.RequestScoped; 
import javax.inject.Named; 
import javax.jms.ConnectionFactory; 
import javax.jms.JMSContext; 
import javax.jms.JMSProducer; 
import javax.jms.Topic; 
 
@Named 
@RequestScoped 
public class MessageSender { 
 
...