JAXP is a standard interface which supports pluggable XML and XSL implementations. JAXP selects the parser based on system properties. You can set the properties to select a different parser than the default one.

By default, Resin will use the JDK's parsers. Other parsers, including Resin's own parsers can be selected with the <system-property> tag.

Resin can use XPath, the XML Path Language, to select nodes from an XML tree. Scripts can select all 'table' children, or even all 'table' elements in an entire HTML file. The XPath language is exceptionally rich. It can describe an incredible number of node selections.

XSLT filters can be applied to the output of a JSP page or a Servlet. XSLT simplifies creating a uniform style for a site. XSLT converts XML to HTML or XML or WAP. It's easy to create different output depending on the browser. Just choose another stylesheet. The example below creates HTML or XML results from the same JSP.

The JSP page creates a simple XML file. It tells Resin to use XSL filtering by setting the contentType to x-application/xslt.

The extensible stylesheet language is a language for transforming XML documents to new XML documents. It's based on matching elements in the XML tree and replacing the element with new XML. For example, replacing a 'definition' tag with an HTML table with a silver background.