  Following Sanchez's approach we investigate the effect of scalar mass in the
absorption and emission problems of 4d Schwarzschild black hole. The absorption
cross sections for arbitrary angular momentum of the scalar field are computed
numerically in the full range of energy by making use of the analytic
near-horizon and asymptotic solutions and their analytic continuations. The
scalar mass makes an interesting effect in the low-energy absorption cross
section for S-wave. Unlike the massless case, the cross section decreases with
increasing energy in the extremely low-energy regime. As a result the
universality, {\it i.e.} low-energy cross section for S-wave is equal to the
horizon area, is broken in the presence of mass. If the scalar mass is larger
than a critical mass, the absorption cross section becomes monotonically
decreasing function in the entire range of energy. The Hawking emission is also
calculated numerically. It turns out that the Planck factor generally
suppresses the contribution of higher partial waves except S-wave. The scalar
mass in general tends to reduce the emission rate.
