What do you need to know from java for libGdx?

Question

Java

What do you need to know from java to work with the libgdx framework, and what do you need to know besides "java"?

Answer 1

All you need to know is Java Core, well, everything seems to be from Java.
You need to learn how to work with sprites. There are many editors.
You need to know the very basics of physics.
You can also get acquainted with various types of editors, for example Overlap 2D , which will immediately simplify life at times.
There are also various editors in libGdx by default, they should also be studied.

Answer 2

Enough syntax and video tutorials on libgdx.