What is message-driven bean used for?

A message-driven bean is an enterprise bean that allows Java EE applications to process messages asynchronously. This type of bean normally acts as a JMS message listener, which is similar to an event listener but receives JMS messages instead of events.

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What are message driven beans give steps to create message driven beans?

Message driven bean is a stateless bean and is used to do task asynchronously. Step 1 − Create table in database (Refer to EJB-Persistence chapter). Step 2 − Create Entity class corresponding to table (Refer to EJB-Persistence chapter). Step 3 − Create DataSource and Persistence Unit (Refer to EJB-Persistence chapter).

Which of the following does a message-driven bean contain?

Which of the following must be implemented by a JMS message driven bean?

All message-driven beans MUST implement, directly or indirectly, the javax. jms. MessageListener interface.

Which of the following bean is invoked by EJB container when it receives a message from queue or topic?

message driven bean
Explaination. A message driven bean is a type of enterprise bean which is invoked by EJB container when it receives a message from queue or topic. Message driven bean is a stateless bean and is used to do task asynchronously.

Which of the following is used to connect to session beans in an EJB container?

User action establishes a connection to the session bean running in the EJB container using remote method invocation (RMI). The client application invokes one or more business methods in the session bean.

Which interface must be implemented in a message-driven bean class either directly or indirectly?

the MessageDrivenBean interface
All message-driven beans MUST implement, directly or indirectly, the MessageDrivenBean interface. The class MUST be defined as public and it cannot be defined as final nor abstract.

Which option is true with respect to message driven beans?

A message driven bean is a type of enterprise bean which is invoked by EJB container when it receives a message from queue or topic. Message driven bean is a stateless bean and is used to do task asynchronously. Q 9 – Which of the following is true about message driven bean? A – Message driven bean is a stateless bean.

What is message driven Bean in EJB?

EJB – Message Driven Beans. A message driven bean is a type of enterprise bean, which is invoked by EJB container when it receives a message from queue or topic. Message driven bean is a stateless bean and is used to do task asynchronously.

How do I create a message driven Bean in Eclipse IDE?

To create the message driven bean, you need to declare @MessageDriven annotation and implement MessageListener interface. In eclipse ide, create EJB Project then create a class as given below: import javax.jms.*; Export the ejb project and deploy the application.

How to create a message driven bean using JMS API?

A message driven bean receives message from queue or topic, so you must have the knowledge of JMS API. A message driven bean is like stateless session bean that encapsulates the business logic and doesn’t maintain state. To create the message driven bean, you need to declare @MessageDriven annotation and implement MessageListener interface.

What are Message-Driven Beans?

In message driven beans, the messaging service is in asynchronous mode because the user is not intended to get the instant result. Message-driven beans can implement any messaging type. Most commonly, they implement the Java Message Service (JMS) technology. Message-driven beans have the following characteristics: