POI HSSF機能ガイド -- クイック・ガイドHSSFWorkbook wb = new HSSFWorkbook(); FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close(); HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet1 = wb.createSheet("new sheet"); HSSFSheet sheet2 = wb.createSheet("second sheet"); FileOutputStream fileOut = new FileOutputStream("workbook.xls"); wb.write(fileOut); fileOut.close
