Java APIs for XML-Based Remote Procedure Call's (JAX-RPC's) Java-to-WSDL/WSDL-to-Java mapping rules do not try to preserve Java constructs during roundtripping. Many constructs are preserved, but not all. This tip describes, in particular, why following Java coding conventions is very important to maintaining the ability to roundtrip.

Over time, XML has permeated many niches. One area where XML is used increasingly is in the configuration of graphical user interfaces, especially in elements that are persistent but should not be fixed at compile-time. In this installment, David looks at the use of XML in Mac OS X's Aqua GUI, and in the K Desktop Environment (KDE) which is either standard or available in most modern Linux distributions.

The world of XML is vast and growing, with a huge variety of standards and technologies that interact in complex ways. It can be difficult for beginners to navigate the most important aspects of XML, and for users to keep track of new entries and changes in the space. XML is a basic syntax upon which you develop local and global vocabularies. Previous in-depth articles have presented the most important standards relating to XML. This fourth article, provides a detailed cross-reference of all covered standards.

This article provides a technical introduction to XML with an eye towards guiding the reader to appropriate sections of the XML specification when greater technical detail is desired. This introduction is geared towards a reader with some HTML or SGML experience, although that experience is not absolutely necessary. The XML Link and XML Style specifications are also briefly outlined.