@Override
public void simpleInitApp() {
Box b = new Box(Vector3f.ZERO, 1, 1, 1);
Geometry geom = new Geometry("Box", b);
geom.updateModelBound();
Material mat = new Material(assetManager, "Common/MatDefs/Misc/SolidColor.j3md");
mat.setColor("m_Color", ColorRGBA.Blue);
geom.setMaterial(mat);