Java XML parser and transformer APIs (DOM, SAX, JAXP, TrAX)

 xml-apis.jar from the Apache XML Commons project is used by the Xerces-J XML
 parser and Xalan-J XSLT processor and specifies these APIs:
  * Document Object Model (DOM) level 3
  * Simple API for XML (SAX) 2.0.2
  * Java APIs for XML Processing (JAXP) 1.3.04
  * Transformation API for XML (TrAX) 1.3.04
  * Document Object Model (DOM) Level 3 Load and Save
  * JSR 206 Java API for XML Processing 1.3
 .
 These classes are also used in Sun's reference implementation. A GPL'ed
 implementation of these APIs can be found in the libgnujaxp-java package.