SubReport not appearing when running outside iReports

Ok - found the solution - albeit not in any official documentation.

 

I had to add the following two lines to my java code which runs the report.

 

parameterValues.put(JRParameter.REPORT_DATA_SOURCE, jasperresultset);

parameterValues.put(JRParameter.REPORT_CONNECTION, connection);

Might I suggest that apart from the demo - source code it might be helpful to put a few lines of sample Java code in the manual which help people run the reports which are created in iReport. In fact an option to create a "launcher" skeleton/template code to run the report would be great.