Jaxp - XSLT or TrAX (Transformation API for XML)

Xml - XSL Transformations (XSLT) in Java XML - Java API for XML Processing (JAXP)

The XSLT APIs defined in javax.xml.transform let you write XML data to a file or convert it into other forms. You can even use it in conjunction with the SAX APIs to convert legacy data to XML.

Trax (XSLT) is the set of APIs contained in:

• javax.xml.transform,
• javax.xml.transform.stream,
• javax.xml.transform.dom,
• and javax.xml.transform.sax.

• Entry Point: javax/xml/transform/TransformerFactory
• javax.xml.transform: Defines the XSLT APIs that let you transform XML into other forms.

See: https://docs.oracle.com/javase/tutorial/jaxp/intro/extensible.html