If you download the jBoss rules with Dependencies file, it comes with string-template.jar. Use this. _____ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of fakhfakh ismail Sent: Thursday, May 03, 2007 6:03 AM To: jboss rules Subject: [rules-users] error compilation hello, when I execute my code an error is affiched [java] Exception in thread "main" java.lang.NoClassDefFoundError: org/antlr/stringtemplate/StringTemplateGroup [java] at org.drools.semantics.java.RuleBuilder.<clinit>(Unknown Source) [java] at org.drools.compiler.PackageBuilder.addRule(Unknown Source) [java] at org.drools.compiler.PackageBuilder.addPackage(Unknown Source) [java] at org.drools.compiler.PackageBuilder.addPackageFromDrl(Unknown Source) [java] at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExe cutionSet(Unknown Source) [java] at org.drools.jsr94.rules.admin.LocalRuleExecutionSetProviderImpl.createRuleExe cutionSet(Unknown Source) thank you for your help Best regards Ismail _____ Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! <http://fr.rd.yahoo.com/evt=42054/*http:/fr.answers.yahoo.com> Questions/Réponses.