This post summarizes Java libraries specific for video game development.
List of Java Libraries for Video Games
Java libraries for video games:
Lightweigth Java Game Library (LWJGL) is a low-level graphics library at its lowest level. You need to be familiar with OpenGL.
libGDX is a mid-level library. It is free/libre and open-source (FLOSS) and based on OpenGL.
It would be at the same level as PyGame library for Python.
jMonkeyEngine is a high-level 3D graphics library.