  We calculate the statistical entropy of a rotating hairy black hole by taking
into account superradiant modes in the brick wall method. The UV cutoff is
independent of the gravitational hair, which gives the well-defined area law of
the entropy. It can be shown that the angular momentum and the energy of matter
field depend on the gravitational hair. For the vanishing gravitational hair,
it turns out that the energy for matter is related to both the black hole mass
and the black hole angular momentum whereas the angular momentum for matter
field is directly proportional to the angular momentum of the black hole.
