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Oracle GlassFish Server 3.1 Application Development Guide
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Part I Development Tasks and Tools

1.  Setting Up a Development Environment

2.  Class Loaders

3.  Debugging Applications

Part II Developing Applications and Application Components

4.  Securing Applications

5.  Developing Web Services

6.  Using the Java Persistence API

7.  Developing Web Applications

8.  Using Enterprise JavaBeans Technology

9.  Using Container-Managed Persistence

10.  Developing Java Clients

11.  Developing Connectors

12.  Developing Lifecycle Listeners

13.  Developing OSGi-enabled Java EE Applications

Part III Using Services and APIs

14.  Using the JDBC API for Database Access

15.  Using the Transaction Service

16.  Using the Java Naming and Directory Interface

17.  Using the Java Message Service

18.  Using the JavaMail API

Introducing JavaMail

Creating a JavaMail Session

JavaMail Session Properties

Looking Up a JavaMail Session

Sending and Reading Messages Using JavaMail

To Send a Message Using JavaMail

To Read a Message Using JavaMail

Using Application-Scoped JavaMail Resources


Looking Up a JavaMail Session

The standard Java Naming and Directory Interface (JNDI) subcontext for JavaMail sessions is java:comp/env/mail.

Registering JavaMail sessions in the mail naming subcontext of a JNDI namespace, or in one of its child subcontexts, is standard. The JNDI namespace is hierarchical, like a file system’s directory structure, so it is easy to find and nest references. A JavaMail session is bound to a logical JNDI name. The name identifies a subcontext, mail, of the root context, and a logical name. To change the JavaMail session, you can change its entry in the JNDI namespace without having to modify the application.

The resource lookup in the application code looks like this:

InitialContext ic = new InitialContext();
String snName = "java:comp/env/mail/MyMailSession";
Session session = (Session)ic.lookup(snName);

For more information about the JNDI API, see Chapter 16, Using the Java Naming and Directory Interface.