need some guidance on how to make JTable look something like this:
so far on searching i'v found nothing concrete and what i have found is scrambled between multiple .java and hundreds of lines. not readable to me.
what/where should i look into that would provide me a skeleton-like table like this?
Anything like that is going to be a custom header renderer - which as you noted is "hundreds of lines". It's not a trivial thing that you do in a couple of lines of code. I assume you ran across this implementation: http://www.esus.com/docs/GetQuestionPage.jsp?uid=1272