[jasper reports does not work in executable jar file]

i;m new on jasper report sir i was faced problem generating the jasper report from the executable jar file  but when i used in my eclipse ide it was still work 

here is my code

public void showReport(ActionEvent event) throws JRException, ClassNotFoundException, SQLException {

    Attendence gtm=(Attendence)list.getSelectionModel().getSelectedItem();

   

if(gtm.getRegNum() !=null){

            

String  reg_id=gtm.getRegNum();

  String testId=gtm.getDilId();

         

         String reportSrcFile = "report/Blank_A4.jrxml";

       

        HashMap<String, Object> parameters = new HashMap<String, Object>();

        if(testId.contains("Dil"));

        {

            parameters.put("dil_teest", testId);

        }

       

       parameters.put("test", reg_id);

        ArrayList<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>();

        list.add(parameters);

 

        JRBeanCollectionDataSource beanColDataSource = new JRBeanCollectionDataSource(list);

        JasperReport jasperReport = JasperCompileManager.compileReport(reportSrcFile);

        

        JasperPrint print = JasperFillManager.fillReport(jasperReport, parameters,con);

        JRViewer viewer = new JRViewer(print);

        viewer.setOpaque(true);

        viewer.setVisible(true);

        this.add(viewer);

        this.setSize(700, 500);

        this.setVisible(true);

   }