How can I create a “modern looking” Java desktop application?

Question

Similar questions to this are asked periodically, but many of these answers are outdated.

I need to build a cross-platform desktop application in Java with a GUI of comp

Answer 1

I know this question is old, but if you don't want to use FX and still want to use Swing, then try MacWidgets, i've used it on a couple projects. It's very light, and looks great. Below is an old project i was working on, over time i've perfected using macwidgets and now use it internally in my company.

http://www.digitalhand.net/projects/jdataanalyzer/mainGUI.png