With the introductions behind us, let’s get to it. Before heading straight into Java, though, some basic structures must be laid down. These address a fundamental understanding of the concepts in XML and how the extensible markup language works. In other words, you need an XML primer. If you are already an XML expert, skim through this chapter to make sure you’re comfortable with the topics addressed. If you’re completely new to XML, on the other hand, this chapter can get you ready for the rest of the book without hours, days, or weeks of study.