  We present formulas of Rodrigues type giving the Macdonald polynomials for
arbitrary partitions through the repeated application of creation operators on
the constant 1. Three expressions for the creation operators are derived one
from the other. When the last of these expressions is used, the associated
Rodrigues formula readily implies the integrality of the (q,t)-Kostka
coefficients. The proofs given in this paper rely on the connection between
affine Hecke algebras and Macdonald polynomials
