我想显示度量值最高的行。但我什么也没得到

Question

这是我的桌子

我需要在控制台上显示哈里的名字和他45岁的年龄'''

public class Main {

  public static Scanner in = new Scanner(System.in);

  public static void main(String[] args) throws IOException {

    FileInputStream file = new FileInputStream(new File("C:\\Users\\User\\Desktop\\school.xlsx"));
    XSSFWorkbook workbook = new XSSFWorkbook(file);
    XSSFSheet sheet = workbook.getSheet("Director");
    List<Double> list = new ArrayList<>();
    Iterator iterator=sheet.iterator();

    
    while (iterator.hasNext()) {
        XSSFRow row = (XSSFRow) iterator.next();

        Iterator cellIterator = row.cellIterator();

        while (cellIterator.hasNext()) {
            XSSFCell cell = (XSSFCell) cellIterator.next();

            switch (cell.getCellType()) {
                case NUMERIC:
                    list.add(cell.getNumericCellValue());
                    break;

            }
        }
    }
    Double max=Collections.max(list);
    int ind=list.indexOf(max);

    while(iterator.hasNext()){
        XSSFRow row = sheet.getRow(ind+1);
        Iterator cellIterator=row.cellIterator();
        System.out.println(row);
        while(cellIterator.hasNext())
        {
            XSSFCell cell=(XSSFCell) cellIterator.next();

            switch(cell.getCellType())
            {
                case STRING: System.out.print(cell.getStringCellValue()); break;
                case NUMERIC: System.out.print(cell.getNumericCellValue());break;
                case BOOLEAN: System.out.print(cell.getBooleanCellValue()); break;
            }
        }
    }

    }
}
'''

Answer 1

您只能遍历一次迭代器。如果要再次查找行，则必须从顶部重新读取该文件。您正在使用的迭代器已经在iterator.hasNext()上返回false。所以根本不会进入第二个循环。