Hi... I am new in jasper report+ireport and I am testing. I made a test report from a table without parameters, but when I want show the report, the command JasperFillManager.FillReport(), do nothing this is the code that I am implementing: try { String report = "C:\reportes\test.jasper"; Map parameters = null; Connection conn =DataBase.conexion; JasperPrint print = JasperFillManager.fillReport(report, parameters, conn); JasperViewer.viewReport(report, false); } catch (JRException ex) { JOptionPane.showMessageDialog(this,"Internal error to show the report","Error!",1); return; } What is the problem?