public void writeExcel()  { 
      FileOutputStream fos ; 
        POIFSFileSystem fs ; 
        HSSFWorkbook wb ; 
 
        try 
        { 
          this.filePath = "c:/abc.xls"; 
          java.io.File f = new java.io.File(filePath); 
          //if(!f.exists()) 
            //f.createNewFile(); 
          fos = new FileOutputStream(f); 
 
          fs = new POIFSFileSystem(); 
 
          wb = new HSSFWorkbook(); 
          HSSFSheet sheet = wb.createSheet(); 
          HSSFCell cell; 
      int count = 3; 
 
            HSSFRow row = sheet.createRow(rs.getRow()); 
            for(int i = 1 ; i <= count ; i ++) 
            { 
              cell = row.createCell(i); 
              org.apache.poi.hssf.usermodel.HSSFRichTextString str = 
                new org.apache.poi.hssf.usermodel.HSSFRichTextString(i); 
              cell.setCellValue(str); 
            } 
 
          } 
 
          fs.writeFilesystem(fos); 
          fos.flush(); 
          fos.close(); 
 
        }catch(java.io.IOException e) 
        { 
          e.printStackTrace(); 
        } 
        catch(java.sql.SQLException e) 
        { 
          e.printStackTrace(); 
        } 
        finally 
        { 
 
        } 
}