What is a session bean in EJB?

A session bean is an EJB 3.0 or EJB 2.1 enterprise bean component created by a client for the duration of a single client/server session. A session bean performs operations for the client. Although a session bean can be transactional, it is not recoverable should a system failure occur.

How many types of session beans are available in EJB?

Session beans are of three types: stateful, stateless, and singleton.

How do I set the bean in the session?

Create Session Bean In the New File window, select a category of Enterprise JavaBeans and a file type of Session Bean. Click Next. Select Local as the option for Create Interface. Click Finish.

When a remote session bean is used in EJB?

Q 19 – When a remote session bean is used in EJB? A – If ejb client is in same environment where ejb session bean is to be deployed then we use remote session bean.

What is the use of session bean?

A session bean represents a single client inside the Application Server. To access an application that is deployed on the server, the client invokes the session bean’s methods. The session bean performs work for its client, shielding the client from complexity by executing business tasks inside the server.

What is session bean and its types?

Types of Session Bean 1) Stateless Session Bean: It doesn’t maintain state of a client between multiple method calls. 2) Stateful Session Bean: It maintains state of a client across multiple requests. 3) Singleton Session Bean: One instance per application, it is shared between clients and supports concurrent access.

What is EJB stateless session bean?

Advertisements. A stateless session bean is a type of enterprise bean, which is normally used to perform independent operations. A stateless session bean as per its name does not have any associated client state, but it may preserve its instance state.

How many types of session beans are available in EJB Mcq?

There are 3 types of session bean.

What are session beans explain the different types?

Which case of a session bean obtains the UserTransaction?

Bean-managed transactions obtains UserTransaction object via EJBContext using getUserTransaction() method.

What are two types of session beans?

There are two types of session beans: stateless and stateful. Stateless session beans are business objects that hold conversations that span a single client-invoked method call.

Which session bean does the conversational state between multiple method calls is not maintained by the container?

Stateless Session Bean does the conversational state between multiple method calls – EJB. Q.