Using JavaMail API to enhance your applications with mailing capabilities.

More information: Using JavaMail.

Understanding and using the HTTP Client.

More information: HTTP Client.

Using custom configuration properties in your applications.

More information: Managing System and Application Configurations.

Using the JNDI API in your applications.

More information: Naming and Directory Services (JNDI).

Using the RMI-P4 features when developing your distributed applications on AS Java.

More information: RMI-P4 Overview