(* Title: HOL/MicroJava/J/Decl.ML ID: $Id$ Author: David von Oheimb Copyright 1999 Technische Universitaet Muenchen *) Goal "finite {C. is_class G C}"; by (fold_goals_tac [dom_def]); by (rtac finite_dom_map_of 1); qed "finite_is_class";