Hi Venkatesh, On 2/19/07, venkatesh devalapura nagabhushana <venkatesh.nag(a)wipro.com&gt; wrote: Hi, After successfully compiling the example code FibnacciExample.java, I tried to run it, I get the following error, let me know how to solve it: java FibonacciExample Exception in thread "main" java.lang.ExceptionInInitializerError at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.6.0.0) at org.drools.semantics.java.RuleBuilder.<clinit>() (Unknown Source) at java.lang.Class.initializeClass () (/usr/lib/libgcj.so.6.0.0) at org.drools.compiler.PackageBuilder.addRule(org.drools.lang.descr.RuleDescr) (Unknown Source) at org.drools.compiler.PackageBuilder.addPackage(org.drools.lang.descr.PackageDescr ) (Unknown Source) at org.drools.compiler.PackageBuilder.addPackageFromDrl(java.io.Reader) (Unknown Source) at FibonacciExample.main(java.lang.String[]) (Unknown Source) at gnu.java.lang.MainThread.call_main () (/usr/lib/libgcj.so.6.0.0) at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0) Caused by: java.util.regex.PatternSyntaxException: At position 2 in regular expression pattern: expected end of character class (.*)\bmodify\s*\(([^)]+)\)(.*) ^ at java.util.regex.Pattern.Pattern(java.lang.String, int) (/usr/lib/libgcj.so.6.0.0) at java.util.regex.Pattern.compile(java.lang.String, int) (/usr/lib/libgcj.so.6.0.0) at org.drools.semantics.java.KnowledgeHelperFixer.<clinit>() (Unknown Source) at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.6.0.0) ...8 more Is it require to place .drl file in the same directory as that of the source code ? Thanks, Venkatesh What JDK are you using? "/usr/lib/libgcj.so.6.0.0" and "gnu.java.lang" makes me think that it's GNU Classpath or something like that. It is quite possible that there are incompatibilities with that runtime. Have you tried running it with Sun's JDK? Best regards Marcus _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

> Snip earlier e-mail >>

Hi, You do not have jdt.jar in your class path. It comes with the dependency list. If you cannot find it, you can download it from here http://repo1.maven.org/maven2/org/eclipse/jdt/core/3.2.0.666/core-3.2.0.6... But I recommend you using the one that is coming with the dependency list. /sumedha On 2/20/07, venkatesh devalapura nagabhushana <venkatesh.nag(a)wipro.com&gt; wrote: > > > Hi, > > I shifted to Sun JDK. Now, I am seeing a new problem while trying to run > FibonacciExample: > > java org.drools.examples.FibonacciExample > Exception in thread "main" java.lang.NoClassDefFoundError: > org/eclipse/jdt/internal/compiler/env/INameEnvironment > at org.drools.compiler.PackageBuilder.loadCompiler(Unknown > Source) > at org.drools.compiler.PackageBuilder.<init>(Unknown Source) > at org.drools.compiler.PackageBuilder.<init>(Unknown Source) > at > org.drools.examples.FibonacciExample.main(FibonacciExample.java:18) > > Could any one please let me know how to solve this problem ? > > Thanks, > Venkatesh > > > >> Snip earlier e-mail >> > > > > 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 > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users