I can see just one way:

Point3d center = new Point3d(X, Y, Z);
BoundingSphere boundingSphere = new BoundingSphere(center,
radiusHeight);
Appearance appearance = new Appearance();
Material material = new Material();
appearance.setMaterial(material);
Cylinder cylinder = new Cylinder(radius, radiusHeight,
Primitive.GENERATE_NORMALS, appearance);
boundingSphere.combine(cylinder);

Now the question...
If the Cylinder bigger than BoundingSphere ( radiusHeight has the same
value,
and radius of cylinder bigger than radiusHeight ) did the combine
result
has BoundingSphere and Cylinder,... another words Cylinder which
include
BoundingSphere, and centered in coordinate system by center of
BoundingSphere.
Thank you for help.
ZAV.