Improve error messages when using boxed java functions ------------------------------------------------------ Key: DROOLS-1568 URL: https://issues.jboss.org/browse/DROOLS-1568 Project: Drools Issue Type: Bug Components: dmn engine Affects Versions: 7.0.0.CR3 Reporter: Edson Tirelli Assignee: Matteo Mortari Fix For: 7.1.0.Final Currently, when the engine does not find the mapped java function (if the user uses an unknown java class or makes a typo in the method signature), it raises an ArrayIndexOutOfBoundsException. Fix it to properly return a meaningful message to the user, stating the java function was not found.