XSLT (XSL Transformations) Question:

XSL transformation is the process of transforming one XML file into another XML, HTML or other type of file based upon selective rules and condition. XSL(XML Style Sheet language) is used to define those rules and condition in a .xls file, which is called style sheet document. Any XSLT engine can read those instruction defined in style sheet document and transform source XML file into something expected. Core of XSLT is, transformation engine and style sheet document. XSLT engine can be written in Java or any other language. Java has XSLT support via javax.xml.transform package which specifies classes like Templates, TransformFactory, an implementation of abstract factory design pattern, which can be used to read XSL file and transform XML files.