SAXReader isn't in the standard
Java API. I guess from my Google search you're asking about the class in DOM4J? What I found didn't have any documentation for this constructor
but the name of the parameter does suggest
you should be passing it a class name and not a String containing XML.
Okay, that's what you're doing wrong. How should you do it right? Based on the documentation I saw, I would try something like
but that's just a guess. If it were me I would be looking around the DOM4J documentation for some example code.