Jasper report error

[John Wenn]

I need to pass a parameter form a small swing application to generate a report
which uses a 'where' clause. So what I did was this.

From the java side:

String reportSource = "../Projects/supplier/TestingPara.jrxml";
        String reportDest = "../Projects/supplier/TestingPara.html";

        Map<String, Object> params = new HashMap<String, Object>();
        params.put("exdate", d);
        try {

            JasperReport jasperReport = JasperCompileManager.compileReport(reportSource);

            Class.forName("com.mysql.jdbc.Driver").newInstance();
            
            Connection con = DriverManager.getConnection("jdbc:mysql:///tablet","****","****");
            
            JasperPrint jasperPrint =
                    JasperFillManager.fillReport(jasperReport, params, con);

            JasperExportManager.exportReportToHtmlFile(jasperPrint, reportDest);

            JasperViewer.viewReport(jasperPrint, false);
            
            con.close();
        } catch (Exception ex) {
            System.out.println(ex);
        }

I'm using iReport as my Jasper report designer, in there I have specified
a parameter and when I insert my sql query it gives me an error

Screen cast


So how do I specify a parameter in a correct way,and also want to know if there's a error in my query
please help me.

Thanks.