sun is typically not available anymore / deprecated even and not available in the JRE or it's early access, but fair point.

When I run into things like this that I know are wrong, I try to remember when reading things I don't know about...

I tried to implement a minimal server just to realize that there is still no way to do so in java 21... I stand corrected I guess it was recently added: https://docs.oracle.com/en/java/javase/25/docs/api/jdk.https..., but it's a sun package instead of standard RT - but probably because it is still early.

I did mention that, but for a lot of things it is not enough compared to a full http client most stdlib's have. HttpClient was introducted for a reason.