Modifying existing excel using jxl

Question

I m not able to edit the existing excel sheet using jxl. It always creates a new one. Can anyone please help me out with it. Please give a small sample code.

Answer 1

//there is god example of it, you can copy in ur project and check it out, to 
//understand how  it works

Workbook wk = Workbook.getWorkbook(new File("ex.xls"));
// 
WritableWorkbook wkr = Workbook.createWorkbook(new File("modifed.xls"), wk);
/* second line makes copy of wk excel file object /creates a readable spreadsheet.
both are now similar and i can Modify exiting wkr spreadsheets */



 //next 2 line retrieve sheet number 0  and cell (1,1)


 WritableSheet getsht = wkr.getSheet(0);
 WritableCell getcl = getsht.getWritableCell(1, 1);


 //making own font 

WritableFont ft = new WritableFont(WritableFont.ARIAL, 20 , WritableFont.BOLD, true , UnderlineStyle.SINGLE); 
//making Format, which uses font
WritableCellFormat   form   =   new WritableCellFormat( ft);

Number nb = ( Number ) getcl ;          
nb.setCellFormat( form );    


wkr.write();
wkr.close();