Document Information


Part I Introduction

1.  Overview

2.  Using the Tutorial Examples

Part II The Web Tier

3.  Getting Started with Web Applications

4.  JavaServer Faces Technology

5.  Introduction to Facelets

6.  Expression Language

7.  Using JavaServer Faces Technology in Web Pages

8.  Using Converters, Listeners, and Validators

9.  Developing with JavaServer Faces Technology

10.  JavaServer Faces Technology: Advanced Concepts

11.  Using Ajax with JavaServer Faces Technology

12.  Composite Components: Advanced Topics and Example

13.  Creating Custom UI Components and Other Custom Objects

14.  Configuring JavaServer Faces Applications

15.  Java Servlet Technology

16.  Uploading Files with Java Servlet Technology

17.  Internationalizing and Localizing Web Applications

Part III Web Services

18.  Introduction to Web Services

19.  Building Web Services with JAX-WS

20.  Building RESTful Web Services with JAX-RS

21.  JAX-RS: Advanced Topics and Example

Part IV Enterprise Beans

22.  Enterprise Beans

23.  Getting Started with Enterprise Beans

The cart Example

The Business Interface

Session Bean Class

Lifecycle Callback Methods

Business Methods

The @Remove Method

Helper Classes

Running the cart Example

To Run the cart Example Using NetBeans IDE

To Run the cart Example Using Ant

The all Task

A Singleton Session Bean Example: counter

Creating a Singleton Session Bean

Initializing Singleton Session Beans

Managing Concurrent Access in a Singleton Session Bean

Handling Errors in a Singleton Session Bean

The Architecture of the counter Example

Running the counter Example

To Run the counter Example Using NetBeans IDE

To Run the counter Example Using Ant

A Web Service Example: helloservice

The Web Service Endpoint Implementation Class

Stateless Session Bean Implementation Class

Running the helloservice Example

To Build, Package, and Deploy the helloservice Example Using NetBeans IDE

To Build, Package, and Deploy the helloservice Example Using Ant

To Test the Service without a Client

Using the Timer Service

Creating Calendar-Based Timer Expressions

Specifying Multiple Values in Calendar Expressions

Programmatic Timers

The @Timeout Method

Creating Programmatic Timers

Automatic Timers

Canceling and Saving Timers

Getting Timer Information

Transactions and Timers

The timersession Example

Running the timersession Example

To Run the timersession Example Using NetBeans IDE

To Build, Package, and Deploy the timersession Example Using Ant

To Run the Web Client

Handling Exceptions

25.  A Message-Driven Bean Example

26.  Using the Embedded Enterprise Bean Container

27.  Using Asynchronous Method Invocation in Session Beans

Part V Contexts and Dependency Injection for the Java EE Platform

28.  Introduction to Contexts and Dependency Injection for the Java EE Platform

29.  Running the Basic Contexts and Dependency Injection Examples

30.  Contexts and Dependency Injection for the Java EE Platform: Advanced Topics

31.  Running the Advanced Contexts and Dependency Injection Examples

Part VI Persistence

32.  Introduction to the Java Persistence API

33.  Running the Persistence Examples

34.  The Java Persistence Query Language

35.  Using the Criteria API to Create Queries

36.  Creating and Using String-Based Criteria Queries

37.  Controlling Concurrent Access to Entity Data with Locking

38.  Using a Second-Level Cache with Java Persistence API Applications

Part VII Security

39.  Introduction to Security in the Java EE Platform

40.  Getting Started Securing Web Applications

41.  Getting Started Securing Enterprise Applications

42.  Java EE Security: Advanced Topics

Part VIII Java EE Supporting Technologies

43.  Introduction to Java EE Supporting Technologies

44.  Transactions

45.  Resources and Resource Adapters

46.  The Resource Adapter Example

47.  Java Message Service Concepts

48.  Java Message Service Examples

49.  Bean Validation: Advanced Topics

50.  Using Java EE Interceptors

Part IX Case Studies

51.  Duke's Bookstore Case Study Example

52.  Duke's Tutoring Case Study Example

53.  Duke's Forest Case Study Example



Chapter 24
Running the Enterprise 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 components running in the same server.

In Chapter 23, Getting Started with Enterprise Beans, you built a stateless session bean named ConverterBean. This chapter examines the source code of four more session beans:

  • CartBean: a stateful session bean that is accessed by a remote client

  • CounterBean: a singleton session bean

  • HelloServiceBean: a stateless session bean that implements a web service

  • TimerSessionBean: a stateless session bean that sets a timer

The following topics are addressed here: