Spring Interview Questions on Framework - 9

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Question: 1

What is the basic concept of Spring?

A. Factory pattern

B. Singleton pattern

C. Dependency injection or Inversion of control

D. Abstract factory pattern

Question: 2

Which spring module provides the capability of DI or IOC?

A. Spring web

B. Core container

C. AOP

D. Data access

Question: 3

What is Front controller pattern (explain concept) and how is it implemented in spring (Choose option)?

Concept : 
Please refer to oracle docs link http://www.oracle.com/technetwork/java/frontcontroller-135648.html

A. Dispatcher servlet

B. Web.xml

C. Spring.xml

D. Controller.java Any Spring controller used in MVC

Question: 4

What are beans in the concept of Spring or what are spring beans?

A. Controller classes

B. Service classes

C. Repository

D. Any class that is managed by the container.

Question: 5

How does spring achieve DI or IOC?

A. Service locator pattern

B. Factory pattern

C. Abstract factory pattern

D. Singleton pattern

Question: 6

What are stereo type annotations in Spring?

Ans : When a class is annotated with stereo type annotations then the spring automatically registers the class in the application context so that it could be used to achieve DI or IOC. Ex; Controller classes are annotated with @Controller or @RestController or service classes with @Service or General classes with @Component.
Types of Stereo type annotations:
@RestController
@Controller
@Service
@Repository
@Component

Question: 7

How does Spring differ from EJB?

Ans : EJB is a standard whereas Spring is just Framework not a standard. When you choose EJB you are actually going by the J2EE standards which includes technologies like JSF, Servlets etc.
Both help in reducing the boiler plate codes. But when we use EJB you don’t have the freedom of using technologies. Since J2EE is a specification ejb can only use certain restricted apis for the building of application. For ex; You have to use the Java Transaction Api provided by the Application server like Weblogic, IBM etc. But Spring can plugin JTA provide by any vendor like Jboss etc. Also EJB uses JPA for ORM operations where as spring can use any implementation from Hibernate, Java Persistence API (JPA), Java Data Objects (JDO) or iBATIS.
EJB applications normally require a WAR which is deployed in a Web sever and an EAR which is deployed in an Application server. But Spring has only 1 deployable which is a WAR file or a JAR which could be deployed in a web server. So Spring applications are light weight.
There are many more differences. Please refer some docs in Google for better understanding.

Question: 8

Which interface in spring is responsible for Instantiating and managing the so called Spring beans?

A. Bean Factory

B. ApplicationContext

C. BeanDefenition

D. BeanFactoryAware

Question: 9

What are the different ways to configure a Spring application?

Ans: Traditional XML based, Annotation based and Java based configuration. Now a days we use Java based configuration. Using annotations like @Configuration, @Bean etc.

Spring Interview Questions on Framework - 9

Home » Spring » Spring Interview Questions on Framework

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