Document Information

Part I Introduction

2. Using the Tutorial Examples

Part II The Web Tier

3. Getting Started with Web Applications

4. Java Servlet Technology

5. JavaServer Pages Technology

6. JavaServer Pages Documents

7. JavaServer Pages Standard Tag Library

8. Custom Tags in JSP Pages

9. Scripting in JSP Pages

10. JavaServer Faces Technology

11. Using JavaServer Faces Technology in JSP Pages

12. Developing with JavaServer Faces Technology

13. Creating Custom UI Components

14. Configuring JavaServer Faces Applications

15. Internationalizing and Localizing Web Applications

Part III Web Services

16. Building Web Services with JAX-WS

17. Binding between XML Schema and Java Classes

18. Streaming API for XML

19. SOAP with Attachments API for Java

Part IV Enterprise Beans

20. Enterprise Beans

21. Getting Started with Enterprise Beans

22. Session Bean Examples

The cart Example

The Business Interface

Session Bean Class

Life-Cycle Callback Methods

Business Methods

The Remove Method

Building, Packaging, Deploying, and Running the cart Example

Building, Packaging, and Deploying the cart Example Using NetBeans IDE

Running the cart Application Client Using NetBeans IDE

Building, Packaging, and Deploying the cart Example Using Ant

Running the cart Application Client Using Ant

Undeploying the cart Example

A Web Service Example: helloservice

The Web Service Endpoint Implementation Class

Stateless Session Bean Implementation Class

Building, Packaging, Deploying, and Testing the helloservice Example

Building, Packaging, and Deploying the helloservice Example Using NetBeans IDE

Building, Packaging, and Deploying the helloservice Example Using Ant

Testing the Service without a Client

Using the Timer Service

The Timeout Method

Creating Timers

Canceling and Saving Timers

Getting Timer Information

Transactions and Timers

The timersession Example

Building, Packaging, Deploying, and Running the timersession Example

Building, Packaging, Deploying, and Running the timersession Example Using NetBeans IDE

Building, Packaging, and Deploying the timersession Example Using Ant

Running the timersession Application Client Using Ant

Handling Exceptions

23. A Message-Driven Bean Example

Part V Persistence

24. Introduction to the Java Persistence API

25. Persistence in the Web Tier

26. Persistence in the EJB Tier

27. The Java Persistence Query Language

Part VI Services

28. Introduction to Security in the Java EE Platform

29. Securing Java EE Applications

30. Securing Web Applications

31. The Java Message Service API

32. Java EE Examples Using the JMS API

33. Transactions

34. Resource Connections

35. Connector Architecture

Part VII Case Studies

36. The Coffee Break Application

37. The Duke's Bank Application

Part VIII Appendixes

A. Java Encoding Schemes

B. About the Authors

The Java EE 5 Tutorial

Java Coffee Cup logo

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Chapter 22

Session Bean Examples

Session beans provide a simple but powerful way to encapsulate business logic within an application. They can be accessed from remote Java clients, web service clients, and from components running in the same server.

In Chapter 21, Getting Started with Enterprise Beans, you built a stateless session bean named ConverterBean. This chapter examines the source code of three more session beans:

CartBean: a stateful session bean that is accessed by a remote client
HelloServiceBean: a stateless session bean that implements a web service
TimerSessionBean: a stateless session bean that sets a timer

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