Wicket is the best library I've ever used. Not just best webapp library or best Java library, the best library anywhere. If server-side rendering is an option then I'd absolutely use that (possibly from Scala).

Happy to see Wicket mentioned. It is still pleasure to work with, even now.

Wicket sounds like a throwback to JSF. No thanks.

Yes, sounds like, but it isn't. There is no logic inside html templates apart from wicket-specific component binding tags and everything happens in Java.

This is going to be largely dependent on your needs, but a factor I would consider if you're using LLMs for coding is which models have been trained the most on which languages. The more a model has been trained on a particular language, the less it will hallucinate

ASP.NET and C#

I'm currently building an internal app with Pico CSS, htmx and ASP.NET minimal APIs returning Razor components and it's a joy. I'm a Developer DBA with no perfessional front end experience but I feel really productive and the final results look great.

Not to forget Entity Framework Core. It has become one of the best (if not the best) ORM over the years. Bit of a learning curve, but for CRUD ideal.