Java MCQ Number 01080

Java MCQ Set 1

1. Which of these class contains the methods print() & println()?
a) System
b) System.out
c) BUfferedOutputStream
d) PrintStream

2. Which of these methods can be used to writing console output?
a) print()
b) println()
c) write()
d) all of the mentioned

3. Which of these class is used to create an object whose character sequence is mutable?
a) String()
b) StringBuffer()
c) Both of the mentioned
d) None of the mentioned

4. Which of these method of class StringBuffer is used to reverse sequence of characters?
a) reverse()
b) reverseall()
c) Reverse()
d) reverseAll()

5. Which of these classes are used by character streams output operations?
a) InputStream
b) Writer
c) ReadStream
d) InputOutputStream

6. Which of the following statement is correct?
a) reverse() method reverses all characters
b) reverseall() method reverses all characters
c) replace() method replaces first occurrence of a character in invoking string with another character
d) replace() method replaces last occurrence of a character in invoking string with another character

7. What is the output of this program?

a) 6 4 6 9
b) 5 4 5 9
c) 7 8 8 9
d) 4 3 6 9

8. What is the output of this program?

a) Hello
b) olleH
c) HelloolleH
d) olleHHello

9. What is the output of this program?

a) HelloGoodWorld
b) HellGoodoWorld
c) HellGood oWorld
d) Hello Good World

10. What is the output of this program?

a) a is a lower case Letter
is White space character
b) b is a lower case Letter
is White space characte
c) a is a lower case Letter
A is a upper case Letter
d) a is a lower case Letter
0 is a digit

Java MCQ Set 2

1. OSGi—which was formerly known as the:-
a) Open Services Gateway initiative
b) Open Source Gateway initiative
c) Open Services Gateway initialisation
d) None of the mentioned

2. OSGi provides a layer on top of the JVM’s default class loader.
a) True
b) False

3. On top of Spring Dynamic Modules, SpringSource built SpringSource dm Server, which is a server wired from top to bottom with OSGi and Spring.
a) True
b) False

4. OSGi is a framework.
a) True
b) False

5. User component models are:-
a) OSGi
b) Spring
c) All of the mentioned
d) None of the mentioned

6. In OSGi, anything used by something else is a state.
a) True
b) False

7. “Service” doesn’t imply any:-
a) RPC
b) inheritance
c) transactional qualities
d) all of the mentioned

8. OSGi bundles are simply standard .jar files with customized MANIFESTs that OSGi consumes at runtime.
a) True
b) False

9. Tool which dynamically interrogates classes for their imports and generates OSGi–compliant entries.
a) pnd
b) jndi
c) bnd
d) none of the mentioned

10. The plug-in produces OSGi–compliant bundles that work in any container.
a) True
b) False

11. The Bundle-Activator directive describes to the OSGi environment, which class implements :-
a) BundleActivator
b) BundleActivate
c) All of the mentioned
d) None of the mentioned

12. When the bundle begins to load and start, it calls the start method of the:-
a) BundleActivator
b) Activator
c) All of the mentioned
d) None of the mentioned

13. To start using Spring to smooth over some of the minutiae of resource acquisition and to help build more reliable systems in an OSGi environment.
a) Spring DM server
b) Spring Dynamic Modules
c) All of the mentioned
d) None of the mentioned

14. Spring Dynamic Modules scans our deployed bundles and loads an ApplicationContext (actually, the specific type of the ApplicationContext is OsgiBundleXmlApplicationContext) into memory based on an event, or a trigger.
a) True
b) False

15. You’ll split your OSGi–specific Spring configuration and your plain-vanilla Spring configuration into:-
a) modulename-context.xml
b) modulename-osgi-context.xml
c) all of the mentioned
d) none of the mentioned

Java MCQ Set 3

1. jBPM will expose beans using the:-
a) jBPM expression language
b) jBoss
c) Spring expression language
d) None of the mentioned

2. jBPM, and indeed most workflow engines, passivate state for you, allowing a process to wait on external events :-
a) True
b) False

3.

<?xml version="1.0" encoding="UTF-8"?>
<beans >="http://www.springframework.org/schema/beans"
	>:tx="http://www.springframework.org/schema/tx" 
	>:p="http://www.springframework.org/schema/p"
	>:util="http://www.springframework.org/schema/util" 
	>:xsi="http://www.w3.org/2001/XMLSchema-instance"
	>:aop="http://www.springframework.org/schema/aop"
	>:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="
	http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-3.0.xsd
	http://www.springframework.org/schema/util
	http://www.springframework.org/schema/util/spring-util-3.0.xsd
	http://www.springframework.org/schema/aop
	http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
	http://www.springframework.org/schema/tx
	http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
	">
<import resource="jbpm4-context.xml"/>
<context:annotation-config/>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method propagation="REQUIRED" name="*"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* 
	com.apress.springrecipes..jbpm4.*.*(..))"/>
</aop:config>
<util:list id="annotatedHibernateClasses">
<value>com.apress.springrecipes.jbpm.jbpm4.customers.Customer</value>
</util:list>
<bean id="customerService" class="com.apress.springrecipes.jbpm.jbpm4.customers.
	CustomerServiceImpl">
<property name="processDefinitions">
<list>
<value>/process-definitions/RegisterCustomer.jpdl.xml</value>
</list>
</property>
        </bean>
</beans>

We override the List bean (with id annotatedHibernateClasses) that we created for the last recipe (jbpm4 context.xml) to provide the session factory with a collection of annotated entities which is here as:-
a) HibernateCustom
b) Customer
c) All of the mentioned
d) None of the mentioned

4. The method annotated with @PostConstruct will be run after the bean’s been configured to let the user inject custom initialization logic.
a) True
b) False

5. The business process file’s name needs to end in :-
a) jpdl
b) xml
c) jpdl.xml
d) none of the mentioned

6. At the top, we’ve injected some dependencies:
a) springConfiguration
b) repositoryService
c) executionService
d) all of the mentioned

7.

package com.apress.springrecipes.jbpm.jbpm4.customers;
public interface CustomerService {
void sendWelcomeEmail(Long customerId);
void deauthorizeCustomer(Long customerId);
void authorizeCustomer(Long customerId);
Customer getCustomerById(Long customerId);
Customer createCustomer(String email, String password, String firstName, 
String lastName);
void sendCustomerVerificationEmail(Long customerId);
}

The class(CustomerServiceImpl) provides a few salient methods:-
a) void setupProcessDefinitions()
b) Customer createCustomer(String email, String passphrase, String firstName, String lastName)
c) void sendCustomerVerificationEmail(Long customerId)
d) all of the mentioned

8. In the bean, setupProcessDefinitions is run when the bean is created.
a) True
b) False

9. Process definition will reference Spring beans using the JBoss expression language.
a) True
b) False

10. In jBPM, a business process is built using jPDL.
a) True
b) False

11.

<?xml version="1.0" encoding="UTF-8"?>
<process name="RegisterCustomer" >="http://jbpm.org/4.0/jpdl">
          <start>
          <transition to="send-verification-email" />
          </start>
          <java name="send-verification-email" expr="#{customerService}"
          method="sendCustomerVerificationEmail">
          <arg> <object expr="#{customerId}" /> </arg>
          <transition to="confirm-receipt-of-verification-email" />
          </java>
          <state name="confirm-receipt-of-verification-email">
          <transition to="send-welcome-email" />
          </state>
          <java name="send-welcome-email"
          expr="#{customerService}" method="sendWelcomeEmail">
          <arg> <object expr="#{customerId}" /> </arg>
          </java>
</process>

In the customerService bean, a client will use createCustomer to create a customer record.
a) True
b) False

12.

<?xml version="1.0" encoding="UTF-8"?>
<process name="RegisterCustomer" >="http://jbpm.org/4.0/jpdl">
          <start>
          <transition to="send-verification-email" />
          </start>
          <java name="send-verification-email" expr="#{customerService}"
          method="sendCustomerVerificationEmail">
          <arg> <object expr="#{customerId}" /> </arg>
          <transition to="confirm-receipt-of-verification-email" />
          </java>
          <state name="confirm-receipt-of-verification-email">
          <transition to="send-welcome-email" />
          </state>
          <java name="send-welcome-email"
          expr="#{customerService}" method="sendWelcomeEmail">
          <arg> <object expr="#{customerId}" /> </arg>
          </java>
</process>

Inside the createCustomer method, we use jBPM to start the business process to track the Customer. This is done with the :-
a) startProcessInstanceByKey
b) startProcessInstance
c) all of the mentioned
d) none of the mentioned

13. Once in the java element named send-verification-email, jBPM will invoke the method:-
a) sendCustomerVerificationEmail
b) sendCustomerVerification
c) veifyCustomerVerificationEmail
d) all of the mentioned

14. Inside authorizeCustomer, the service queries the server for the any processes waiting at the:-
a) confirm-receipt-of-verification
b) confirm-receipt
c) confirm-receipt-of-verification-email
d) none of the mentioned

15. The authorizeCustomer method also updates the Customer entity, marking it as authorized. From there, execution proceeds to the send-welcome-email java element.
a) True
b) False

Java MCQ Set 4

1. The ____ interface allows setting expectations for an associated expected invocation.
a) IMocksControl
b) IExpectationSetters<T>
c) IExpectation<T>
d) Isetters<T>

2. _______ function expect the last invocation any times.
a) andStubReturn(T value)
b) andThrow(Throwable throwable)
c) anyTimes()
d) asStub()

3. ________ sets stub behavior for the expected invocation.
a) andStubReturn(T value)
b) andThrow(Throwable throwable)
c) anyTimes()
d) asStub()

4. ___ expect the last invocation between min and max times.
a) times(int count)
b) times(int min, int max)
c) once()
d) asStub()

5. ______ expect the last invocation a specified number of times.
a) times(int count)
b) times(int min, int max)
c) once()
d) asStub()

6. _______ sets a stub object that will be used for the calculation of the answer for the expected invocation.
a) andAnswer(IAnswer<? extends T>answer)
b) andDelegateTo(Object delegateTo)
c) andStubAnswer(IAnswer<? extends T> answer)
d) andThrow(Throwable throwable)

7. ___ sets a stub object implementing the same interface as the mock.
a) andAnswer(IAnswer<? extends T> answer)
b) andDelegateTo(Object delegateTo)
c) andStubAnswer(IAnswer<? extends T> answer)
d) andStubDelegateTo(Object delegateTo)

8. _______ records a call but returns nothing.
a) andVoid()
b) times(int min, int max)
c) once()
d) asStub()

9. _______ expects the last invocation once.
a) andVoid()
b) times(int min, int max)
c) once()
d) asStub()

10. ___ sets a return value that will be returned for the expected invocation.
a) andReturn(T value)
b) times(int min, int max)
c) once()
d) asStub()

Java MCQ Set 5

1. Improving the design of existing code is known as ____
a) Refactoring
b) Improving
c) Betterment
d) Upgrading

2. In what order is multiple @Before annotated methods run?
a) Oldest First
b) Newest First
c) Randomly
d) According to argument list

3. The _____ method confirms that both references are to the same object.
a) assertEquals
b) assertEqual
c) assertEqualObject
d) assertSame

4. The assertEquals() method uses which underlying method to compare objects?
a) ==
b) equals()
c) isequal()
d) =

5. The equals() method is inherited from which base class?
a) Object
b) String
c) Integer
d) org.junit.Equals

6. To use Parameterized.class with the @RunWith annotation, we need to import ____
a) org.junit.runners.Parameterized
b) org.junit.Parameterized
c) org.junit.runners.Parameterized
d) org.runners.Parameterized

7. To avoid overdesigning an interface, usually ______ is used.
a) Agile Development
b) Test Driven Development
c) Base Design Development
d) Waterfall Development

8. The ___ is a sequential or non-iterative design process, which is used in software development processes, in which progress is seen as flowing steadily downwards.
a) Waterfall Model
b) Iterative Model
c) Spiral Model
d) Big Bang Model

9. Controller logic component accesses the ________ logic component.
a) Class
b) Object
c) Business
d) Criteria

10. Overuse of argument ___ can lead to fragile tests.
a) Parameters
b) Objects
c) Classes
d) Captors

DistPub Team

Distance Publisher (DistPub.com) provide project writing help from year 2007 and provide writing and editing help to hundreds student every year.

• Website
• Twitter
• Facebook