Clojure and Flatlaf [1] tick all the boxes for me. If I want declarative-ish UI, I can always throw in Seesaw [2]. Everything else I find cumbersome, pulls tons of unnecessary dependencies and (usually) ends up abandoned in a year or two. With Swing, I know it is well-documented and will work for the next 30 years. But YMMV and I'm hoping that HumbleUI could be an exception.
>>dig1+(OP)
Having worked with Swing recently, I worry that it will not work well on the near-distant future, because it feels frozen in time at about 2005.
There are a lot of assumptions baked in that aren't holding up today.
For example, high density and multi monitor aren't well supported. There's a bunch of stuff hard-coded in the JDK that no longer makes sense and you have to hack around.
>>iamcal+vF
I recommend using the JetBrains JRE, they have fixed lots of these sorts of issues, as well as greatly improved hot class reloading for development.