Good Java action tutorial?

Hi  I am new to the Java actions in Mendix. Is there a good tutorial on how to programm a Java action properly (how to import extern libraries/utils, dealing with different classes, the overall structure, best practices etc)?   I only found some answers to questions in the forum but no good tutorial.   Thanks and have a great day!
1 answers

I found this page to be a good starting point.

It is focused on using Eclipse, but if you use another IDE or editor the principles are the same. I use VS Code personally.

Also, looking at the source code for other modules is really useful to see how others have written their modules. Community Commons is a great start as there are a large number of very simple actions, and some that are a bit more complicated.

Good luck!