I am trying to write the data from an excel file to a text file and if there is a blank cell I need to write "-" to the file. However this doesn't work on some excel files for reasons I do not understand.
Here's the code:
for (int i = 0; i < wb.getNumberOfSheets(); i++) {
sheet = wb.getSheetAt(i);
fw = new FileWriter("C:\\Users\\Emre\\Desktop\\excelstore.txt");
for (Row row : sheet) {
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
switch (cell.getCellType()) {
case STRING:
fw.write(cell.getStringCellValue() + ",");
break;
case NUMERIC:
fw.write(cell.getNumericCellValue() + ",");
break;
case BLANK:
fw.write("-" + ",");
default:
}
}
fw.write("\n");
}
fw.close();
Pic of the excel file im supposed to read it from: https://ibb.co/2NqDgtj
Here is the output: https://ibb.co/MnMS0Dp
You cannot always rely on the CellType in your special case. It may happen that you have a cell with whitespaces in, identified as STRING. So check the content of cell.getStringCellValue() and replace by dash if empty.
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