GNU/Linux CentOS Installing Processing 3 Guide
You are Welcome! The Step-by-Step Tutorial shows you How to Install Processing 3.x in CentOS GNU/Linux Desktops.
And Processing 3 for CentOS is a flexible Software Sketchbook and a Language for Learning How to Code within the context of the Visual Arts.
Especially relevant: the Installation of the Oracle Java Runtime is Required for Coding in Java with Processing 3 Sketches.