slow JasperReport

[bbq]

I did a report with iReport, when I test it inside of iReport works, but when I do the preview in the program but it takes a lot of minutes to do it.
Why?
this is the code:

      String reportSource = "./report/test3.jrxml";
       HashMap params = new HashMap();
       JRDesignQuery queryReport = new JRDesignQuery();
       params.put("something","1"); 
      
       try
       {
           JasperDesign diReport= JRXmlLoader.load(reportSource);
           queryReport.setText(consult);
           diReport.setQuery(queryReport);
           JasperReport jasperReport = JasperCompileManager.compileReport(diReport);
           JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, params, DB.getConnection());
           JasperViewer ReporttoPreview = new JasperViewer(jasperPrint,false); 
           ReporttoPreview .setTitle("lawyers");
           ReporttoPreview .show();

plz help me!!

[Jack]

Maybe you need more ram memory
How many do you have? 512 ?

[Heather]

What about your jasper report version?
What do you have?

[coldblood22]

Even i am experiencing the same problem. i got 512 MB RAM still it takes more than 20 secs for the report to load.
Please help out.