Design for Ajacs, yet Another Java Constraint Programming Framework1 1The Authors Would Like to Thank the Anonymous Referees for Their Constructive Review of an Earlier Version of This Article. Universidade de Évora, Centria and Fundaçlãto da Ciêcncia e Tecnologia (Under Contract Praxis P/Eei/10191/98 “Oar”) Are Acknowledged for Their Support of the Work Described Herein.