public class createExcel {

public  void write() throws IOException, WriteException {

        WorkbookSettings wbSettings = new WorkbookSettings();
        wbSettings.setLocale(new Locale("en", "EN"));
        WritableWorkbook workbook1 =Workbook.createWorkbook(new File(file), wbSettings);
        workbook1.createSheet("Niru ", 0);
        WritableSheet excelSheet = workbook1.getSheet(0);
        createLabel(excelSheet);
        createContent(excelSheet,list);
        workbook1.write();
        workbook1.close();
    }


 public void createLabel(WritableSheet sheet)throws WriteException {

WritableFont times10pt = new WritableFont(WritableFont.createFont("D:\font\trebuct"),8);

// Define the cell format

        times = new WritableCellFormat(times10pt);
        // Lets automatically wrap the cells
        times.setWrap(false);
        WritableFont times10ptBoldUnderline = new WritableFont(
        WritableFont.createFont("D:\font\trebuct"), 9, WritableFont.BOLD, false,
        UnderlineStyle.NO_UNDERLINE);
        timesBoldUnderline = new WritableCellFormat(times10ptBoldUnderline);

        sheet.setColumnView(0,15);
                sheet.setColumnView(1,13);

        // Write a few headers
        addCaption(sheet, 0, 0, "Business Date");
        addCaption(sheet, 1, 0, "Dealer ID");


    }
        private void createContent(WritableSheet sheet, ArrayList list) throws WriteException,RowsExceededException {
                // Write a few number
        for (int i = 1; i < 11; i++) {
                    for(int j=0;j<11;j++){
            // First column
            addNumber(sheet, i, j,1);
            // Second column
            addNumber(sheet, 1, i, i * i);
                    }
        }
            }
private void addCaption(WritableSheet sheet, int column, int row, String s)     throws RowsExceededException, WriteException {

        Label label;
        label = new Label(column, row, s, timesBoldUnderline);
                sheet.addCell(label);
    }

    private void addNumber(WritableSheet sheet,  int row,int column,
            Integer integer) throws WriteException, RowsExceededException {
        Number number;
        number = new Number(column,row, integer, times);
        sheet.addCell(number);
    }


public static void main(String[] args) {

        JButton myButton0 = new JButton("Advice_Report");
        JButton myButton1 = new JButton("Position_Report");
        JPanel bottomPanel = new JPanel();   
        bottomPanel.add(myButton0);
        bottomPanel.add(myButton1);  
        myButton0.addActionListener(this);
        myButton1.addActionListener(this);  
        createExcel obj=new  createExcel();
        obj.setOutputFile("c;\\temp\\swings\\jack.xls");
        try{
        obj.write();
        }catch(Exception e){}
}

and so on. it working fine. i have jxl.jar and ojdbc14.jar files(need this jar file for Excelsheet creation and DB connection )and createExcel.class(.class file) file. how to make this code as executable jar file.