How to export the data as integer into excel sheet?

Question

Hi All,
     I am working on export to excel functionality and using JEXCEL API to create it.  When I export the data to excel sheet, the data are stored in text format in the excel sheet.  If I click on summation button on excel sheet,  it is not summing up the column values since it is stored as the text format. 
I am writing the following code:
for(Iterator iter = columnInfos.keySet().iterator(); iter.hasNext();){
String attributeName = (String)iter.next();
for(int index = 0; index < dataNode.size(); index++){
try{
IWDNodeElement nodeElement = dataNode.getElementAt(index);
String colVal = nodeElement.getAttributeAsTex(attributeName);
Label value = new Label(j, index + 1, colVal);
sheet.addCell(value);
j++;
Here colVal is the variable which holds the data in string format.  So I was just trying to convert it into integer format and used Integer.parseInt(colVal).
But Label keyword accepts only the int,int,string arguments. 
Is there any other option to change it as integer value while exporting to excel sheet.
Pls suggest.
This is very urgent.
Regards,
Subashini.

Answer 1

Hi Gopal,
Pls refer the following link.
/people/subramanian.venkateswaran2/blog/2006/08/16/exporting-table-data-to-ms-excel-sheetenhanced-web-dynpro-binary-cache
I have used the same coding which is mentioned in this link. 
And also I cannot use integer.parseInt(colval)  because new Label()  will accept only the int,int,string as parameters. 
Here goes my to excel method code which exports the data to excel sheet .
private FileInputStream toExcel(IWDNode dataNode, Map columnInfos) {
String fileName = "output.xls";
IWDCachedWebResource cachedExcelResource = null;
int i = 0;
try{
File f = new File("output.xls");
WritableWorkbook workbook = Workbook.createWorkbook(f);
WritableSheet sheet = workbook.createSheet("First Sheet", 0);
for(Iterator coluinfoitr = columnInfos.keySet().iterator(); coluinfoitr.hasNext();){
Label label = new Label(i, 0, (String)columnInfos.get(coluinfoitr.next()));
sheet.addCell(label);
i++;
int j = 0;
for(Iterator iter = columnInfos.keySet().iterator(); iter.hasNext();){
String attributeName = (String)iter.next();
for(int index = 0; index < dataNode.size(); index++){
try{
IWDNodeElement nodeElement = dataNode.getElementAt(index);
String colVal = nodeElement.getAttributeAsText(attributeName);
Label value = new Label(j, index + 1, colVal);
sheet.addCell(value);
catch (Exception e){
wdComponentAPI.getMessageManager().reportException(" Data Retrive Err :" + e.getLocalizedMessage(),false);
j++;
workbook.write();
FileInputStream excelCSVFile = new FileInputStream(f);
cachedExcelResource = getCachedWebResource(excelCSVFile, fileName, WDWebResourceType.getWebResourceType("xls", "application/ms-excel"));
wdContext.currentContextElement().setExcelDownload(cachedExcelResource.getURL());
workbook.close();
It is exporting the data in text format.  So I am unable to sum up the column values in the excel sheet.
I need an alternate solution wherein I can export the data in integer format to excel sheet and then sum up the column values by clicking on summation button.
Hope I am clear now.
Pls suggest.
Regards,
Subashini.