Thanks but I downloaded Drools 4.0.7 Eclipse 3.2 Workbench from http://www.jboss.org/drools/downloads.html. Unless the link has the wrong package named. Please suggest. Thanks Devyani -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of djb Sent: Wednesday, May 05, 2010 6:12 PM To: rules-users(a)lists.jboss.org Subject: Re: [rules-users] Error running Drools example : org.drools.WorkingMemory not found I think WorkingMemory is a relic from the past. You may be trying Drools 4.0 examples while using Drools 5.0 jars? -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Error-running-Drools -example-org-drools-WorkingMemory-not-found-tp778793p778815.html Sent from the Drools - User mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Please do not print this email unless it is absolutely necessary. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com

I see. But then I shouldn;t be getting this error since these jars are part of the jar downloaded for eclipse workbench (org.drools.eclipse_4.0.7.jar ) Thanks Devyani ________________________________ From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Rajnikant Gupta Sent: Wednesday, May 05, 2010 6:16 PM To: Rules Users List Subject: Re: [rules-users] Error running Drools example :org.drools.WorkingMemory not found Hi, The WorkingMemory class is inside org.drools package and not inside org.drools.WorkingMemory. Also make sure that you include all the dependency jars. As in my case I also have - drools-compiler-4.0.4.jar - drools-jsr94.jar etc Regards, Rajnikant Gupta http://rkthinks.wordpress.com/ 2010/5/5 <devyani.sapre(a)wipro.com&gt; Hi I am new to Drools (using version 4.0.7). I download eclipse workbench and am trying to run the default example in it. But I get the following error java.lang.NoClassDefFoundError: org/drools/WorkingMemory When I looked at the drools-core jar; It seems to be missing WorkingMemory package. What should I do? Using eclipse version 3.4.0. Thanks Devyani Please do not print this email unless it is absolutely necessary. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com <http://www.wipro.com/> _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users Please do not print this email unless it is absolutely necessary. The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com