The document discusses different methods for parsing XML data, including SAX, DOM, XML Pull, and JDOM/JSoup. SAX is an event-based parser that is faster but only allows one-pass traversal, while DOM builds an in-memory tree that is slower but allows modification and multi-directional traversal. The document provides code samples for each method and compares their performance, lines of code, and capabilities. It recommends using SAX for large files due to its small memory footprint and speed.