The only UI library I’ve ever been able to find for LWJGL is Feng which stopped development at the start of 2009, and TWL which I’ve never been able to figure out, and have no idea when the last update was.
I’m looking for some very basic functionality so I can start learning from it; I’ve created my own “Text box” but it’s not exactly a text box. It doesn’t have click listening. I believe this is my problem for most things; I’m just struggling with the “basic” stuff that’s always been done for me with other engines. I’ve managed to get a 3D game running (With the help of a friend) in Java using jPCT(Built on LWJGL) with multiplayer networking so far, but I’m trying to spice things up a bit with a decent UI.
If I can’t find one I’ll probably dedicate this next week to figuring out and writing an open sourced library for people to use.