[rules-users] Need Help: Errors while running FibonacciExample

[venkatesh devalapura nagabhushana]

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



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