[waldarbeiter]

The different JDK builds are almost all built from OpenJDK. Maven and Gradle cover nearly all use cases. The complexity is not that high.

[giobox]

I think it is quite high, especially for newcomers to the ecosystem. The popular sdkman CLI tool for managing JDK installations provides 17 different JDKs to install:

https://sdkman.io/jdks/

With the DotNet SDK for comparisons sake, there is but one provider, and package management is provided as first class citizen in the compiler CLI, removing the need to even pick a "gradle" or "maven" style build tool in the first place for almost any project.

[Eldt]

At the very top of the page it mentions a default which kind of negates that issue...