sheet.setColumnWidth((short) 4, (short) 2500);
sheet.setColumnWidth((short) 5, (short) 8500);
sheet.setColumnWidth((short) 6, (short) 3500);
// --------- En-tête -----------
HSSFFont font = wb.createFont();
font.setFontHeightInPoints((short) 36);
font.setFontName("Arial");
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
HSSFCellStyle style = wb.createCellStyle();