The EJB container provides services to EJB components. The services include transaction, naming, and persistence support. Transaction support An EJB container must support transactions. EJB specifications provide an approach to transaction management called declarative transaction management. Which services can use KMS? .
Which middleware services are provided by EJB container?
|In RMI, middleware services such as security, transaction management, object pooling etc. need to be done by the java programmer.||In EJB, middleware services are provided by EJB Container automatically.|
What are the EJB components?
The EJB architecture consists of three main components: enterprise beans (EJBs), the EJB container, and the Java application server.
What execute EJB components?
An EJB component runs on the server in an EJB container and implements the business logic. The EJB object runs on the client and remotely executes the EJB component’s methods. Pretend for a moment that your VCR is an EJB component.
Which EJB container must provide an implementation of Java Naming and Directory Interface API to provide naming service for EJB clients and components?
Answer is “Naming support“
What is the use of EJB container?
Enterprise beans (EJB components) are Java programming language server components that contain business logic. The EJB container provides local and remote access to enterprise beans.
What is EJB application?
EJB is a server-side software component that encapsulates business logic of an application. An EJB web container provides a runtime environment for web related software components, including computer security, Java servlet lifecycle management, transaction processing, and other web services.
Which services are provided to EJB components by the EJB container Mcq?
- Nirja Shah -Posted on 14 Dec 15. – The EJB container provides services to EJB components. …
- Transaction support. – Transactions are supported by an EJB container. …
- Persistence support. – An EJB container provides support for persistence of EJB components. …
- Naming support.
What is EJB and its types?
EJB is an acronym for Enterprise Java Beans. It is a server-side software element. It encapsulates the business logic of an application. It is a specification for developing a distributed business application on the Java platform. There are three types of EJBs: Session Bean, Entity Bean, and Message-Driven Bean.
What are the different types of EJB?
There are three types of EJBs: session beans, entity beans, and message-driven beans.
What is true EJB?
EJB stands for Enterprise Java Bean. Q 2 – Which of the following is true about EJB? A – EJB is an essential part of a J2EE platform. B – EJB provides an architecture to develop and deploy component based enterprise applications considering robustness, high scalability and high performance.
What is EJB in spring?
EJB is a specification of Java EE. Spring is a framework. Dependency Injection. It can inject anything in the container including EJB Data sources, JMS Resources, and JPA Resources. It can inject anything including list, properties, map, and JNDI resources.
What interface must the enterprise bean implement so that an application can invoke its operations?
Remote Clients (It is not required to run on a different JVM.) It can be a web component, an application client, or another enterprise bean. To a remote client, the location of the enterprise bean is transparent. The enterprise bean must implement a business interface.
What kind of programming does Java Message Service provide for EJB Mcq?
Answer: Event-driven programming.
What does the EJB specification architecture define?
Defining Enterprise JavaBeans. Enterprise JavaBeans is an architecture for transactional, component-based distributed computing. The specification for EJBs lays out not just the format of a bean itself, but also a set of services that must be provided by the container in which the bean runs.
Which role in EJB architecture is responsible for EJB server Mcq?
D Server provider is responsible for EJB server.
What is container in web application?
A web container (also known as a servlet container; and compare “webcontainer”) is the component of a web server that interacts with Jakarta Servlets. … The Web container creates servlet instances, loads and unloads servlets, creates and manages request and response objects, and performs other servlet-management tasks.
What are the benefits of EJB explain the different types of beans?
For several reasons, enterprise beans simplify the development of large, distributed applications. First, because the EJB container provides system-level services to enterprise beans, the bean developer can concentrate on solving business problems.
Which are not a container for EJB?
E Internet information server and tomcat are not container for EJB.
What is the difference between Web container and EJB container?
Container Types Enterprise JavaBeans (EJB) container: Manages the execution of enterprise beans for Java EE applications. Enterprise beans and their container run on the Java EE server. Web container: Manages the execution of web pages, servlets, and some EJB components for Java EE applications.
What is an EJB project?
An EJB project is used to organize the resources contained in an EJB module. An EJB module is used to assemble one or more enterprise beans into a single deployable unit. It is deployed in a standard Java™ archive (JAR) file. … An EJB module is installed and run in an enterprise bean container.
Which services are provided to BJP components by the BJP container?
The services that are provided to EJB components by the EJB container are caching, concurrency, environment, memory replication, transaction, naming, persistence support, and clustering for the entity objects that live in the container.
What is MVC Mcq?
1. Model View Controller is the full form of MVC .
What is the function of Enterprise Java Beans Mcq?
Enterprise Java Beans as EJB is an architecture for setting up the program components, written in the Java programming language, that run in the server parts of a computer network that uses in the client/server model.
Which of the following are the system services implemented by the EJB container?
The EJB container provides a standard set of services, including caching, concurrency, persistence, security, transaction management, locking, environment, memory replication, environment, and clustering for the entity objects that live in the container. You can deploy multiple entity beans in a single container.
Which of the following is correct about EJB interceptors?
Q 17 – Which of the following is correct about EJB interceptors? A – EJB 3.0 provides specification to intercept business methods calls using methods annotated with @AroundInvoke annotation. B – An interceptor method is called by ejbContainer before business method call it is intercepting.
What is home interface in EJB?
The home interfaces are used to specify what methods a client uses to create or retrieve an entity bean instance. The home interface must contain a create method, which the client invokes to create the bean instance. The entity bean can have zero or more create methods, each with its own defined parameters.
Is Spring an EJB container?
The key difference between EJB and Spring is that EJB is a specification of Java EE while Spring is a framework or an implementation. … It can inject EJB’s data, JMS, and JPA resources into the container.
What is difference between EJB and Web service?
Between EJB and web services, web services would give you more portability if you want to be able to call them from non-java apps in the future. EJB again gives you things like transaction management and pooling that you might not get “out of the box” with web services.
What is EJB Geeksforgeeks?
Enterprise Java Beans (EJB) is one of the several Java APIs for standard manufacture of enterprise software. EJB is a server-side software element that summarizes business logic of an application. … The EJB enumeration is a subset of the Java EE enumeration.
Which of the following interface is used to find and remove enterprise beans?
Home interface (session beans) The home interface is used to create, find, and remove session bean references according to the EJB 2. x client contract. Home interfaces extend javax. ejb.
What is responsible for managing the active state for object for each enterprise bean?
For each enterprise bean, the container is responsible for registering the object, providing a remote interface for the object, creating and destroying object instances, checking security for the object, managing the active state for the object, and coordinating distributed transactions.
Which JEE technology is used by client to lookup for remote home?
Client access to an enterprise bean that implements a remote business interface is accomplished through either dependency injection or JNDI lookup.
What kind of programming does Java Message Service provide for EJB *?
JMS (Java Message Service) is an API that provides the facility to create, send and read messages. It provides loosely coupled, reliable and asynchronous communication.
What are the benefits for component based product lines?
What are the benefits for component based product lines? Explanation: The benefits are Being able to take faster advantage of new product and new technology, High employee productivity.
What are Servlets Mcq?
Explanation: Servlet has various components like container, config, context, filter. Servlet filter provides the dynamic interception of requests and responses to transform the information.