Do not throw NullPointerException if delegation class is unknown ---------------------------------------------------------------- Key: JBPM-309 URL: http://jira.jboss.com/jira/browse/JBPM-309 Project: JBoss jBPM Issue Type: Bug Components: Core Engine Reporter: Bernd Ruecker Assigned To: Tom Baeyens Priority: Optional Original Estimate: 10 minutes Remaining Estimate: 10 minutes If we declare a action class in jBPM: <transition name="xxxx"> <action class="com.camunda.ccs.process.orderprocessing.OrderActions$PrintReceipts"/> </transition> And this class doesn't exist the follwoing exception is thrown: Caused by: java.lang.NullPointerException at org.jbpm.graph.def.Action.execute(Action.java:79) at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:186) ... 26 more I think, it would be much better to have a ClassNotFoundException!