Spring MCQs – Multiple Choice Questions and Answers – Part 3
Multiple choice questions and answers (MCQs) on Spring to prepare for exams, tests, and certifications. These questions are taken from a real written exam and some parts are taken from an interview. So you will find questions on basic techniques such as Spring Data, JPA, Spring MVC, XML, Hibernate, and more. This quiz will easily prepare anyone to pass their online test.
1. How to explicitly close the IoC container in non-web applications?
A By using shutdownNow()
B registerShutdownHook()
The @PreDestroy annotation is used on the bean method to be notified when the bean is removed from the context or when the context is being closed.
The stop event is triggered when context.close() or context.registerShutdownHook() is called.
@Component(value="myBean")
public class BeanExample {
@PreDestroy
public void destroy() {
System.out.println("The bean is removed ...");
}
}
2. How to enable annotations in Spring?
A Add <annotation-context: config /> to the bean configuration.
B Add <annotation-config /> to the bean configuration.
C Add <annotation-context-config /> to the bean configuration.
D Add <contexte: annotation-config /> to the bean configuration.
<contexte: annotation-config /> to the bean configuration to enable the use of annotations.
3. Which ORM does Spring support?
A Hibernate
B iBatis
C JPA
D All the answers are true
E None of the above
4. A bean must have an id attribute in the bean configuration file?
A True
B False
5. The ________ class can be extended to create a custom event in Spring.
A SpringEvent
B Event
C ApplicationEvent
D None of the above
6. How to use <ref> tag in the Spring framework?
A <ref> tag is used with the bean ID.
B <ref> tag is used with a String value.
C Both A and B are true.
D None of the above
In Spring, beans can “access” each other by specifying their references in the same configuration file or in a different configuration file. In Spring, we can write several configuration xml files. Our associated bean can be in the same xml or in another xml file.
Example : person-bean.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans>
<bean id="personDetails" class="com.jwt.spring.PersonImpl"/>
</beans>
Now, in the XML file below, we refer to “personDetails” configured in the person-bean.xml file. We must therefore use the “ref” tag with the “bean” attribute i.e. <ref bean =" personDetails "/>.
company-bean.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans>
....
<bean id="companyId" class="com.jwt.spring.Company">
<property name="perdetails">
<ref bean="personDetails"/>
</property>
</bean>
....
</beans>
7. How to define a bean in Spring?
A Use only the following <property />
B Use only the following <constructor-arg />
C Use <property /> or <constructor-arg />.
D None of the above
<bean id="objetB" scope="request" class="a.b.c.classeB"/>
<bean id="objetA" scope="request" class="a.b.c.classeA">
<constructor-arg ref="objetB" />
<!-- OR -->
<property name="bRef" ref="objetB" />
</bean>
8. Which property is replaced by p-namespace in the Spring framewrok?
A <property />
B <constructor-arg />
<bean id="per" class="x.y.z.Person"> <property name="name" value="Alex"/> <property name="address" value="California"/> </bean>
We can change the <property> tag using p-namespace as follows.
<bean id="per" class="x.y.z.Person" p:name="Alex" p:address="California"/>
9. Which property is replaced by c-namespace in the Spring framewrok?
A <property />
B <constructor-arg />
Example – The old style :
<bean id="std" class="x.y.z.Student"> <constructor-arg name="name" value="BOB"/> <constructor-arg name="age" value="25"/> </bean>
We can replace constructor-arg using c-namespace as follows.
<bean id="std" class="x.y.z.Student" c:name="BOB" c:age="25"/>
10. What is the purpose of “ApplicationContextAware” in Spring?
A The dependency injection is performed.
B Makes a bean aware of the container.
- Spring MCQs – Multiple Choice Questions and Answers – Part 1
- Spring MCQs – Multiple Choice Questions and Answers – Part 2
- Spring MCQs – Multiple Choice Questions and Answers – Part 3
- Spring MCQs – Multiple Choice Questions and Answers – Part 4
- Spring MCQs – Multiple Choice Questions and Answers – Part 5
- Spring MCQs – Multiple Choice Questions and Answers – Part 6
