- JNetCAD is a simple Java GUI for importing and exporting several CAD formats. Each im- and export module exists as JAR library and can be used separately in other projects. JNetCAD uses jRealiy for the visualization. Hence it provides a software renderer and a JOGL (Java binding for OpenGL) renderer. For the import libraries, exemplary Java3D and jReality renderer are included. At least Java version 1.5 is required.