Why running Java UI without SUDO breaks GUI appearance?

Why running application with SUDO changes GUI appearance?

I.e.Button background, Button size, JTree appearance are behaving differently depending on how the GUI was started with SUDO or not.

Will appreciate your suggestio开发者_运维技巧ns. Thank you

You don't give much in the way of detail. Presumably root has paths and/or environment variables set up differently. I would guess that java -fullversion and sudo java -fullversion will give different results.