CELL_TYPE_STRING cannot be resolved or is not a field

Question

Stack trace

Exception in thread \"main\" java.lang.Error: Unresolved compilation problems: 
CELL_TYPE_STRING cannot be resolved or is not a field
CELL_TYPE_N         


        

Answer 1

If you're using a later version of Apache POI poi-4.0.1, Cell.getCellType() returns the CellType enum instead of int, so your switch should look like this:

now in CELL_TYPE_NUMERIC is now just NUMERIC remove CELL_TYPE_

  while(cellitr.hasNext())
                {
                    Cell celldata=(Cell) cellitr.next();
                    switch(celldata.getCellType())
                    {
                    case STRING:
                        data.add(celldata.getStringCellValue());
                        break;
                    case NUMERIC:
                        data.add(celldata.getNumericCellValue());
                        break;
                    case BOOLEAN:
                        data.add(celldata.getBooleanCellValue());
                        break;
                    }