As a workaround, I have to manually add the drools jar files to the classpath instead of using the classpath generated by the wizard for the drools project. Does this mean that the classpath generated by the new project template is not sufficient? thanks Xiandong ----- Original Message ---- From: Xiandong Su <xiandongsu(a)yahoo.com&gt; To: Drools Users <user(a)drools.codehaus.org&gt; Sent: Monday, December 1, 2008 11:18:18 PM Subject: [drools-user] The Eclipse JDT Core jar is not in the classpath error I am using drools 4.0.7 plug in with eclipse 3.4.1. I created a drools project with the example generated by the wizard. However I am getting this exception when trying to run the example. I see there are discussion around this topic but I still do not have clear understand what the final solution should be. Does anyone have final solution? thanks Xiandong org.drools.RuntimeDroolsException: Unable to load dialect 'org.drools.rule.builder.dialect.java.JavaDialectConfiguration:java' at org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:160) at org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:146) at org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:121) at org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:98) at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:124) at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:86) at com.sample.DroolsTest.readRule(DroolsTest.java:50) at com.sample.DroolsTest.main(DroolsTest.java:21) Caused by: java.lang.RuntimeException: The Eclipse JDT Core jar is not in the classpath at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:91) at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:52) at org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:156) ... 7 more --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users