The examples in Part IV illustrate Java APIs that are typically considered server-side or "enterprise" APIs.
This part is titled "Enterprise Java APIs," and the APIs demonstrated here are documented in more detail in Java Enterprise in a Nutshell, except for the XML API, which is covered in Java in a Nutshell. Despite the name "Enterprise," most of the APIs covered here are part of Java 2 Standard Edition (J2SE). Only the Servlet and JSP APIs are part of Java 2 Enterprise Edition (J2EE).
Chapter 18, Database Access with SQL
Chapter 19, XML
Chapter 20, Servlets and JSP
Chapter 21, Remote Method Invocation