Algebraic Methodology and Software Technology : 9th International Conference AMAST 2002 Saint Gilles les Bains Reunion Island France September 9–13 2002 Proceedings This book constitutes the refereed proceedings of the 9th International Conference on Algebraic Methodology and Software Technology AMAST 2002 held in Saint Gilles les Bains Reunion Island France in September 2002. The 26 revised full papers presented together with 6 invited papers and 2 system descriptions were carefully reviewed and selected from 59 submissions. Among the topics covered are all current issues in formal methods related to algebraic approaches including abstract data types process algebras algebraic specification semantic specification model checking mu calculus Petri box algebras unification verification of Java for smart cards security JML specification and formal software development