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

24.  Running the Enterprise Bean Examples

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

Using Alternatives in CDI Applications

Using Specialization

Using Producer Methods, Producer Fields, and Disposer Methods in CDI Applications

Using Producer Methods

Using Producer Fields to Generate Resources

Using a Disposer Method

Using Events in CDI Applications

Defining Events

Using Observer Methods to Handle Events

Firing Events

Using Interceptors in CDI Applications

Using Decorators in CDI Applications

Using Stereotypes in CDI Applications

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



Using Predefined Beans in CDI Applications

CDI provides predefined beans that implement the following interfaces:


A Java Transaction API (JTA) user transaction.

The abstract notion of a principal, which represents any entity, such as an individual, a corporation, or a login ID. Whenever the injected principal is accessed, it always represents the identity of the current caller. For example, a principal is injected into a field at initialization. Later, a method that uses the injected principal is called on the object into which the principal was injected. In this situation, the injected principal represents the identity of the current caller when the method is run.


A validator for bean instances. The bean that implements this interface enables a Validator object for the default bean validation ValidatorFactory object to be injected.


A factory class for returning initialized Validator instances. The bean that implements this interface enables the default bean validation object ValidatorFactory to be injected.

To inject a predefined bean, create an injection point by using the javax.annotation.Resource annotation to obtain an instance of the bean. For the bean type, specify the class name of the interface the bean implements.

Predefined beans are injected with dependent scope and the predefined default qualifier @Default.

For more information about injecting resources, see Resource Injection.

The following code snippet shows how to use the @Resource annotation to inject a predefined bean. This code snippet injects a user transaction into the servlet class TransactionServlet. The user transaction is an instance of the predefined bean that implements the javax.transaction.UserTransaction interface.

import javax.annotation.Resource;
import javax.servlet.http.HttpServlet;
import javax.transaction.UserTransaction;
public class TransactionServlet extends HttpServlet {
    @Resource UserTransaction transaction;