Is there? Because I'm wondering if it supports GLSL, HLSL, or it's own shading language? I don't know much about Swing graphics. Does anyone know?
No there isn't.
What you can do is use OpenGL in Java with Java™ Binding for the OpenGL® (JOGL). JOGL can interoperate with Swing pretty well, so you can render 3D (or 2D) graphics with GLSL shaders in your Swing components.