Update: All is working now. Get the latest jar file here. And the sources here.
Well that wasn’t that hard. After looking at this page on Java layout managers [TLDR], and then this page on Group Layout again [TLDR]. I just jumped in and tried it out. And whadda you know. It’s not that bad. It’s a little glitchy. Not as smooth as the Qt Layout manager, but it works. Here’s what is working so far.
So the list and path strings resize. And this uses 14 pt type rather than 16 pt, so it’s a little more compact and probably won’t mess up on some screens like the larger font size did.