MCQs on Java EE (Jakarta EE) | Enterprise Java Development
Master Enterprise Java Development with 30 MCQs on Java EE (Jakarta EE)
Enhance your understanding of Java EE (Jakarta EE) with 30 expertly crafted MCQs covering core topics like Enterprise JavaBeans (EJB), Java Message Service (JMS), JavaServer Faces (JSF), and more.
MCQs
1-10: Introduction to Java EE
- Which of the following is the primary goal of Java EE (Jakarta EE)?
- A) To build lightweight applications
- B) To develop robust, scalable enterprise-level applications
- C) To focus on web development
- D) To create mobile applications
- Which of the following Java EE specifications is used for creating RESTful web services?
- A) EJB
- B) JMS
- C) JAX-RS
- D) JSF
- Java EE is primarily based on which Java platform?
- A) Java SE
- B) Java ME
- C) Java EE
- D) JavaFX
- What is the role of a container in Java EE?
- A) To manage server resources
- B) To compile Java source files
- C) To manage lifecycle and transactions of components
- D) To execute Java code outside the JVM
- Which of the following is NOT part of the Java EE specification?
- A) EJB
- B) JPA
- C) JMS
- D) JUnit
- What does the term “dependency injection” in Java EE refer to?
- A) Manually creating objects
- B) Framework providing necessary objects to a class
- C) Injecting dependencies via constructor
- D) Injecting values in the database
- Java EE is now known as:
- A) Jakarta EE
- B) Java Spring
- C) JavaFX
- D) Java Core
- Which of the following features is offered by Java EE for managing the persistence layer?
- A) JPA (Java Persistence API)
- B) JDBC
- C) JAX-RS
- D) JSF
- Java EE applications typically consist of which type of components?
- A) Web-based components only
- B) Enterprise components like EJBs and servlets
- C) Database and security components
- D) Only frontend components
- In Java EE, the Enterprise JavaBeans (EJB) technology is used to develop:
- A) Distributed business logic
- B) User interfaces
- C) Simple web applications
- D) Real-time communication services
11-20: Enterprise JavaBeans (EJB)
- What is the main purpose of Enterprise JavaBeans (EJB)?
- A) To manage business logic and transaction control
- B) To create GUI components
- C) To perform batch jobs
- D) To handle web services
- Which of the following is NOT a type of EJB?
- A) Session Bean
- B) Message-Driven Bean
- C) Entity Bean
- D) Entity Query Bean
- Stateless session beans in EJB:
- A) Maintain client state between method invocations
- B) Do not maintain client state between method invocations
- C) Are used for message-driven processing
- D) Store database connections
- Which type of EJB is used to handle asynchronous messaging?
- A) Message-Driven Bean
- B) Stateless Session Bean
- C) Stateful Session Bean
- D) Singleton Bean
- Which EJB type is used to maintain conversational state between client invocations?
- A) Stateless Session Bean
- B) Stateful Session Bean
- C) Singleton Bean
- D) Message-Driven Bean
- EJB components are typically deployed in which environment?
- A) Virtual Machine
- B) Application Server
- C) Client Machine
- D) Database Server
- The EJB container manages all of the following EXCEPT:
- A) Transaction management
- B) Security
- C) Database connectivity
- D) Bean lifecycle
- Which of the following annotations is used to define a stateless session bean in EJB?
- A)
@EJB - B)
@Stateful - C)
@Stateless - D)
@MessageDriven
- A)
- What does EJB provide in terms of transaction management?
- A) Automatic and declarative transaction management
- B) Manual transaction handling
- C) External transaction management
- D) No transaction management
- The method
remove()in EJB is used to:- A) Remove a bean from the container
- B) Remove the current transaction
- C) Remove an entity object
- D) Remove a message from JMS
21-30: Java Message Service (JMS) and JavaServer Faces (JSF)
- What is the primary function of Java Message Service (JMS)?
- A) To manage the database connection
- B) To handle messaging between Java applications
- C) To provide user interface components
- D) To execute business logic
- Which type of messaging model does JMS support?
- A) Point-to-Point and Publish/Subscribe
- B) Only Point-to-Point
- C) Only Publish/Subscribe
- D) Client-Server
- JMS is part of which Java platform?
- A) Java SE
- B) Java ME
- C) Java EE
- D) Java FX
- Which of the following methods is used to send a message in JMS?
- A)
sendMessage() - B)
send() - C)
post() - D)
publish()
- A)
- In JMS, the
MessageConsumerinterface is used to:- A) Send messages to a queue
- B) Receive messages from a queue
- C) Publish messages to a topic
- D) Create new queues
- JavaServer Faces (JSF) is used for:
- A) Managing business logic
- B) Building user interfaces for web applications
- C) Managing database transactions
- D) Handling web services
- Which of the following is a key feature of JavaServer Faces (JSF)?
- A) Managed beans
- B) Multi-threading support
- C) Message-driven beans
- D) Transaction management
- In JSF, the
@ManagedBeanannotation is used to:- A) Define a user interface component
- B) Create a bean that can be accessed by JSF pages
- C) Handle database operations
- D) Bind components to the backend
- Which of the following is a core JSF component used to create user interface elements?
- A)
h:form - B)
javax.servlet - C)
@WebServlet - D)
javax.ejb
- A)
- What is the purpose of the
faces-config.xmlfile in JSF?- A) To define managed beans
- B) To store database configurations
- C) To configure Java classes
- D) To store servlet mappings
Answer Key
| Qno | Answer |
|---|---|
| 1 | B) To develop robust, scalable enterprise-level applications |
| 2 | C) JAX-RS |
| 3 | A) Java SE |
| 4 | C) To manage lifecycle and transactions of components |
| 5 | D) JUnit |
| 6 | B) Framework providing necessary objects to a class |
| 7 | A) Jakarta EE |
| 8 | A) JPA (Java Persistence API) |
| 9 | B) Enterprise components like EJBs and servlets |
| 10 | A) Distributed business logic |
| 11 | A) To manage business logic and transaction control |
| 12 | D) Entity Query Bean |
| 13 | B) Do not maintain client state between method invocations |
| 14 | A) Message-Driven Bean |
| 15 | B) Stateful Session Bean |
| 16 | B) Application Server |
| 17 | C) Database connectivity |
| 18 | C) @Stateless |
| 19 | A) Automatic and declarative transaction management |
| 20 | A) Remove a bean from the container |
| 21 | B) To handle messaging between Java applications |
| 22 | A) Point-to-Point and Publish/Subscribe |
| 23 | C) Java EE |
| 24 | B) send() |
| 25 | B) Receive messages from a queue |
| 26 | B) Building user interfaces for web applications |
| 27 | A) Managed beans |
| 28 | B) Create a bean that can be accessed by JSF pages |
| 29 | A) h:form |
| 30 | A) To define managed beans |