What version is the Java tutorial for?

Question

I used the Java course on here to learn Java and the formatter isn't working. I'm using Java SE 15.

Answer 1

The current version installed is Java 16-ea (open-jdk). I think the course was created around Java 7 or 8.

Answer 2

java 8

Answer 3

playground shows java 16 ea - records are still preview feature, (not in final Java 16 )

class Program { public static void main(String[] args) { } }
record Person (String name, String address) {}

yes formatter is corrupted I got it on web page playground, but it might be more about Sololearn web solution