And if you run into problems of wrong class file version during compilation - delete your .gradle folder to make sure with the next build you'll get the correct version only 🙂

I had those. Since intellij has started using java 13 (or was ir 14?) Internally I no longer have them. But I'll keep it in mind if they reappear

I think they ship with jdk11 🙂 But good for you if you had no trouble with this 🙂