HSSFWorkbook workbook = new HSSFWorkbook(); HSSFSheet sheet = workbook.getSheetAt(0); HSSFRow row = sheet.createRow(0); Cell cell = row.createCell(0); cell.setCellValue("Hello"); FileOutputStream fileOut = new FileOutputStream("output.xls"); workbook.write(fileOut); fileOut.close(); import org.apache.poi.hssf.usermodel.*; public class ExcelWriter { public static void main(String[] args) { try { HSSFWorkbook workbook = new HSSFWorkbook(); HSSFSheet sheet = workbook.createSheet("Sheet1"); HSSFRow row = sheet.createRow(0); Cell cell = row.createCell(0); cell.setCellValue("Hello"); FileOutputStream fileOut = new FileOutputStream("output.xls"); workbook.write(fileOut); fileOut.close(); } catch (Exception e) { } } }