  Identification of charmonium states at hadron colliders has mostly been
limited to leptonic decays of the J/{\psi}. In this paper we present and
algorithm to identify hadronic decays of charmonium states (J/{\psi},
{\psi}(2S), \chi_{c0,1,2}) which make up the large majority of all decays. The
algorithm is able to identify hadronic $J/\psi$ decays with an efficiency of
36\% while suppressing a background of quark and gluon jets by a factor 100.
