MySQL™ and JSP™ Web Applications: Data-Driven Programming Using Tomcat and MySQL

Writing a SAX Parser

Two modes are supported for XML parsing in Xerces. You can use SAX or DOM. SAX implements event-driven parsing. DOM loads the entire XML document into memory and hands you a pointer to an object hierarchy that represents it.

You'll write a SAX parser first. To parse this XML file, you need to write a class that extends the org.xml.sax.helpers.DefaultHandler class. This class provides a default set of handlers that are called whenever an event occurs during the parsing of the file. Events include finding the start of the document, encountering a start or end element tag, or reading character data.

You can leave most of these event handlers as is because they implement functionality that you don't need to parse a simple data ...