Question

I want to edit an Excel sheet with some pre designed templates containing pie charts and graphs using java.

All I have to do is read some values from a different raw data Excel and insert the values into some specific cell in the Excel with the template. Reading values is done from external data sheet, I tried a lot to write the data into the Excel with the template.

Answer 1

the code is

 FileInputStream fileIn =null;
 FileOutputStream fileOut = null;
 final Workbook wb; 

      fileIn =new FileInputStream("d:\\excelfiles\\Report.xlsm");
      wb = WorkbookFactory.create(fileIn); //open existing file
      final Sheet sheet = wb.getSheet("Report");//open the existing sheet use wb.createSheet() to create a new one
      row = sheet.getRow(0/*row number*/);
      if (row == null)//if row not exists
          row = sheet.createRow(0);
      cellp = row.getCell(4);
      if (cellp == null)
         cellp = row.createCell(0);

note I removed all the exception handling. look more in the api