Felix Jose [http://community.jboss.org/people/FelixKJose] created the discussion "JBPM and DRool sample application throwing exception." To view the discussion, visit: http://community.jboss.org/message/542788#542788 -------------------------------------------------------------- Hi All, I have created a sample application for JBPMand DRool and it is giving the following exception. Also I have attached the sample application with this. Please give me a resolution for this exception. Exception in thread "main" java.lang.NullPointerException at org.jbpm.jpdl.internal.activity.RulesActivity.execute( RulesActivity.java:51) at org.jbpm.pvm.internal.model.op.ExecuteActivity.perform( ExecuteActivity.java:60) at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperationSync( ExecutionImpl.java:656) at org.jbpm.pvm.internal.model.ExecutionImpl.performAtomicOperation( ExecutionImpl.java:616) at org.jbpm.pvm.internal.model.ExecutionImpl.start( ExecutionImpl.java:217) at org.jbpm.pvm.internal.cmd.StartProcessInstanceCmd.execute( StartProcessInstanceCmd.java:61) at org.jbpm.pvm.internal.cmd.StartProcessInstanceCmd.execute( StartProcessInstanceCmd.java:37) at org.jbpm.pvm.internal.svc.DefaultCommandService.execute( DefaultCommandService.java:42) at org.jbpm.pvm.internal.tx.StandardTransactionInterceptor.execute( StandardTransactionInterceptor.java:54) at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment( EnvironmentInterceptor.java:53) at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute( EnvironmentInterceptor.java:40) at org.jbpm.pvm.internal.svc.RetryInterceptor.execute( RetryInterceptor.java:55) at org.jbpm.pvm.internal.svc.SkipInterceptor.execute( SkipInterceptor.java:43) at org.jbpm.pvm.internal.svc.ExecutionServiceImpl.startProcessInstanceById( ExecutionServiceImpl.java:58) at com.felix.poc.MainDriver.main( MainDriver.java:40) Thank you, Felix Jose -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/542788#542788] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]