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Workbook wb = new HSSFWorkbook();    //Workbook wb = new XSSFWorkbook();    CreationHelper createHelper = wb.getCreationHelper();    Sheet sheet = wb.createSheet("new sheet");      // Create a row and put some cells in it. Rows are 0 based.    Row row = sheet.createRow((short)0);    // Create a cell and put a value in it.    Cell cell = row.createCell(0);    cell.setCellValue(1);      // Or do it on one line.    row.createCell(1).setCellValue(1.2);    row.createCell(2).setCellValue(         createHelper.createRichTextString("This is a string"));    row.createCell(3).setCellValue(true);      // Write the output to a file    FileOutputStream fileOut = new FileOutputStream("workbook.xls");    wb.write(fileOut);    fileOut.close();