Help on how to Set a page length and width.

Question

Hi guys I'm kind a new to java JDBC and Jasper.
I'm currently creating my senior project, developing a POS system using Java JDBC, MySql and JasperReport.
I'm now on the finally stage of my project polishing stage.
Now here is my problem.
My adviser wanted my to print sale Invoice using and ordinary Printer let say Espon LX 300 which is available on our Cmpter Lab. He want me to print Sale Invoice using continues paper and try to simulate an actual thing. But I don't know on how to set up a custom paper size in Java or trying to select printer from your system or in your network.
here is the sample of the code:
void PrintInvoice(String databaseName,String userName,String password,String reportFile,String Invoice_Reprint)
        HashMap hm = new HashMap();
        hm.put("REPORT_DATE", saledate_tbox.getText());      
        hm.put("REPORT_VAT", vat_tbox.getText());
        hm.put("REPORT_SUBTOTAL", subtotal_tbox.getText());
        hm.put("REPORT_TOTALPAYMENT", total_tbox.getText());
        hm.put("REPORT_CASH", cash_tbox.getText());
        hm.put("REPORT_CHANGE", change_tbox.getText());
        hm.put("REPORT_POS",POS);       
        hm.put("REPRINT", "REPRINT");
        Connection connection = null;
        ResultSet resultSet = null;
        Statement statement = null;
        try{
        Class.forName(JDBC_DRIVER);     
        String query1 = "select invoice.idinvoice as 'Invoice No'" +
                ",CONCAT(customer.firstname,' ',customer.lastname) as 'Customer'" +
                ",invoice.date as 'Date-Time'" +
                ",item.description as 'Description'" +
                ",sum(invoice_items.quantity) as 'Quantity'" +
                ",Format(item.regular_price,2) as 'Unit Price'" +
                ",Concat((invoice_items.discount*100),'%') as 'Whl Disc'" +
                ",Format(invoice_items.price,2) as 'Price'" +
                ",employee.username as 'Employee'" +
                ",Format(invoice.totaltax,2) as 'Vat'" +
                ",Format(invoice.total,2) as 'Total'" +             
                ",Format(invoice.cash,2) as 'Cash'" +
                ",Format((invoice.total-invoice.totaltax),2) as 'Subtotal'" +               
                ",Format((invoice.cash-invoice.total),2) as 'Change'" +
                " from invoice,item, invoice_items,customer,employee " +
                "where invoice.IDINVOICE = invoice_items.IDINVOICE " +
                "AND invoice_items.UPC_CODE = item.UPC_CODE " +
                "and invoice.idcustomer = customer.customerid " +
                "and invoice.idemployee = employee.idemployee " +
                "AND invoice.idinvoice = (select idinvoice from invoice " +
                "where idemployee = (select idemployee from employee where username = '"+soldby_tbox.getText()+"') " +
                "AND idinvoice = '"+Invoice_Reprint+"' ) GROUP BY item.DESCRIPTION";
        connection = (Connection) DriverManager.getConnection(databaseName,userName,password);
        statement = (Statement) connection.createStatement();
        resultSet = statement.executeQuery(query1);
        JasperDesign jasperDesign = JRXmlLoader.load(reportFile);
        JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);        
        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, hm, new   JRResultSetDataSource(resultSet));        
        JasperExportManager.exportReportToPdfFile(jasperPrint, PDFEXPORT);        
        JasperViewer.viewReport(jasperPrint);
        JasperPrintManager.printReport(jasperPrint, false);       
      }catch(Exception ex) {
         String connectMsg = "Could not create the report " + ex.getMessage() + " " + ex.getLocalizedMessage();
         System.out.println(connectMsg);
      finally{
        try                                                       
              statement.close();                                     
              connection.close();                                    
           } // end try                                              
           catch ( Exception exception )                             
              exception.printStackTrace();                           
           } // end catch    
    }My code print the report on the default printer and default printer setting.
I hope someone out there can help me thx alot. by the way I uses Ubuntu as my OS.
The theme of my Senior Project: POS System Using Open Source.
Hey can someone suggest a project tag line or a better theme cause I believe in the ideals of Open Source,
Thx

Answer 1

Try to define ENTER this way & try
class cl_abap_char_utilities definition load.
DATA : BEGIN OF enter,
x type c value cl_abap_char_utilities=>cr_lf,
END OF enter.
PS : I am not 100% sure about this.
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