Do I need to recompile report?

[burferd]

I have a report compiled in iReport. Can I use the following:

 

 

JasperPrint jp = JasperFillManager.fillReport( reportName, new HashMap(), mySqlConnection ):

 

 

where reportName is the .jasper file created from iReport. The report runs fine in iReport.

 

 

Or do I need to recompile the .jrxml file within the java application first?

 

 

If I can use the .jasper report, why would I get the following error from the JasperFillManager call:

 

 

Error loading expression class : Test_Report_1175101457897_481266

 

 

My report is named Test_Report.jasper. What to do the numeric suffixes refer to?

 

 

What should I look at first to figure out why I get this error? Like I said, it works fine in iReport and the database connection string is the same for both iReport and the application.