使用Apache POI查找包含数据的最后一行

Question

我从excel文件中读取并打印到控制台（暂时）。问题是我正在阅读的excel文件是由几个人编辑的，为了方便起见，他们将表扩展了数百行，因为它每天更新15次，Apache POI认为这是数据和结果最终印刷了数百行。我的代码如下。我以为if current.Row.iterator（）== null会结束while循环吗？

while (iterator.hasNext()) {
        Row currentRow = iterator.next();
        Iterator<Cell> cellIterator = currentRow.iterator();

        if (currentRow.iterator() == null) { // i thought this would exit the while loop?
            return;
        }
        while (cellIterator.hasNext()) {
            Cell currentCell = cellIterator.next();

            if (currentCell.getCellTypeEnum() == CellType.STRING) { // todo: probably don't need the if/else if?
                System.out.print(currentCell.getStringCellValue() + "  ");
            } else if (currentCell.getCellTypeEnum() == CellType.NUMERIC) {
                String currentCellAsString = dataFormatter.formatCellValue(currentCell);
                System.out.print(currentCellAsString + "  ");
            }
        }
        System.out.println();
    }