Hello. I want to use iReport with a JRDataSourceProvider. We need a reportTool for various applications (and databases) and so we want a strictly parting between design and data.For getting the needed fields and data for preview the reportdesigner only should import the XML-DatasourceFile and add the ProjectFolder in the classpath menu. Is there a way for importing the required class(es) without generating a jar-File before? I searched and tested for hours but I found nothing to evade the "check your classpath!" at testing the datasource.