The Transformer class is part of JAXP, an standard API for XML processing. Transformer represents an XSLT-Engine. JAXP (and therefore Transformer) is part of JDK 1.4 or for older versions, you'll find it in in the Xalan distribution (xml-apis.jar) for example.
Knowledge about JAXP has become a basic requirement for each Java programmer! You need to get familiar with it. Here are some URLs to start with. http://java.sun.com/xml/jaxp/ http://java.sun.com/webservices/docs/1.0/tutorial/doc/JAXPIntro.html > In which jar file can I get Transformer class? > Using Transformer object can I repeatedly > create pdfs using xml sources? Cheers, Jeremias Märki