// -------------------------------------------------------- Private Methods
private HSSFWorkbook createWorkbook() {
HSSFWorkbook wb = new HSSFWorkbook();
HSSFFont font = wb.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
HSSFSheet worksheet = wb.createSheet("Customers");
worksheet.setColumnWidth((short) 0, (short)(20 * 256));
worksheet.setColumnWidth((short) 1, (short)(30 * 256));