Compile with Java 25 or 21 for 2026.1?

IntelliJ Platform
1

I received a report, that the class version is too new with 2026.1.

The plugin was compiled with language level 25, but the 2026.1 IDE (NixOS package) is apparently running with a JDK 21.

Is this a valid setup and I need to compile with Java 21 for 2026.1 or is compilation targeting Java 25 for 2026.1 valid?

Thanks!

2

Apparently NixOS build is something provided by community.

Although we still use JDK 21 level for compilation, at runtime we run on 25 already.