Oh god. Don't they realize that "ninjas" was replaced by "badasses" around 2011, officially supplanting "rockstars" (which first appeared in 2009).
There is no indication of what language is expected, but presumably it's java, because companies that do this shit, are entirely java.
I feel the urge to click on the button, but I've been doing Dan Grossman's Programming Language MOOC (https://www.coursera.org/course/proglang) lately, so I'm all about functional programming languages, which I suspect this particular programming test does not grok.. and the button looks like it's entirely about product managers and their conception of what programmers do. Which rhymes with "fuck you."