hi everyBody.. i have a problem to display my informations from the JTable (TableModel) in the jasperViewer... i started with Jasper 2 days ago so i need ur help..!! private void displayReport() { JasperPrint jasperPrint = generateReport(); JasperViewer jasperViewer = new JasperViewer(jasperPrint); jasperViewer.setVisible(true); } private JasperPrint generateReport() { JasperPrint jasperPrint = null; try {Map m= new HashMap(); m.put("Data source"," hello"); jasperPrint = JasperFillManager.fillReport("AircraftReportColumnIndex.jrxml",m,new JRTableModelDataSource(tmp)); //tmp TableModel de ma JTable } catch (JRException ee) { ee.printStackTrace(); } return jasperPrint; } ther's exception.. net.sf.jasperreports.engine.JRException: Error loading object from file : AircraftReportColumnIndex.jrxml