- Copyright
- About the Authors
- Acknowledgments
- We Want to Hear from You!
- Introduction
- Enterprise Java Architecture
- Understanding EJB Architecture
- Understanding EJB Types and Interfaces
- Enterprise JavaBean Types
- Enterprise JavaBean Under the Hood
- EJB Interfaces
- Java Remote Method Invocation over Internet Inter-ORB Protocol Technology
- Remote and Local Interfaces
- Deployment Descriptors
- Packaging and Deploying Enterprise JavaBeans
- Enterprise JavaBean Restrictions
- Best Practices
- Summary
- Q&A
- Quiz
- Exercises
- Understanding Session Beans
- Using JNDI for Naming Services and Components
- Developing Stateless Session Beans
- Developing Stateful Session Beans
- Designing Web Applications
- Entity Beans and Message-Driven Beans
- Understanding Entity Beans
- Using JDBC to Connect to a Database
- Developing Bean-Managed Persistence Entity Beans
- Developing Container-Managed Persistence Entity Beans
- Developing Container-Managed Relationships
- Examining Container-Managed Relationships
- Implementing Container-Manager Relationships
- Designing Container-Managed Relationships
- Defining the Home Interfaces
- Defining the Remote Interfaces
- Implementing the Enterprise Bean Classes
- Declaring the Deployment Descriptors
- Writing a Client
- Packaging and Deploying the Enterprise Beans
- Running the Example
- Best Practices
- Summary
- Q&A
- Quiz
- Exercises
- Understanding JMS and Message-Driven Beans
- Developing Message-Driven Beans
- Looking Under the Hood of an MDB
- Designing the Message-Driven Bean
- Implementing the Enterprise Bean Class
- Declaring the Deployment Descriptor
- Writing a Client
- Packaging and Deploying the Enterprise Bean
- Running the Example
- Examining the Life Cycle of a Message-Driven Bean
- Best Practices
- Summary
- Q&A
- Quiz
- Exercise
- Advanced EJB Applications
- Appendixes
- Index
Q&A
| Q1: | What are the mechanisms used in tracking user session? |
| A1: | You can use HttpSession and URL rewriting to track sessions on the server side, and you can use HTTP cookies and hidden fields in tracking sessions on the client side. |
| Q2: | What role do servlets play in the J2EE architecture? |
| A2: | Servlets are used mainly in processing user requests and delivering dynamic content. They also act as controllers in the MVC pattern. Moreover, they work as delegates for the session façade pattern. This makes an elegant separation between the Web tier for presentation logic and the EJB tier for business logic. |
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