How can I learn to program Java?
I opened a server but want to program my plugins myself!
I'm unfortunately too stupid to do this and have already looked at the playlist of the Youtuber BieVieh where he explained it, but I was too stupid for that.
Is there a way to learn how to program Java for free (and no I have no friends who can and can learn)
You won't be able to avoid learning basic skills before venturing into a plug-in. Writing extensions and "docking" with other software can be a bit annoying.
A common entry is the open book "Java is also an island", which you can read free of charge here. http://openbook.rheinwerk-verlag.de/javainsel/
Daa book (Java is also an island) in connection with:
https://www.w3schools.com/JAVA/default.asp
Tutorialpoint e.g. Also