Continuing from last post with basic questions, it's time for J2EE questions:
- What is J2EE?
- What are the 4 J2EE components?
- What is multi tiered architecture?
- What is the difference between a 3 tiered architecture and 3 layered architecture?
- What is a J2EE container? What 7 services does it provide?
- Describe JAR, WAR and EAR files.
- What is EJB and what is its role?
- What are the main differences between EJB 2.1 and EJB 3.0+?
- What's the difference between Session Bean, Entity Bean, and Message Driven Bean and give an example where each should be used.
- When would you want to use Stateful Session Bean?
- What is the difference between Bean Managed Persistence (BMP) and Container Managed Persistence (CMP)?
- What is deployment descriptor?
- What is the role of JNDI?
- What problems can you see using Java enum persisted in a database?
