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Evaluate all formula cells in cell - java Apache poi

I am currently using
XSSFFormulaEvaluator.evaluateAllFormulaCells(wb);
However, this leaves formula in the cell.
I read similar questions to remove the formula from cell and keep only value using
evaluator.evaluateInCell(cell);
How can I use evaluateInCell with all formula cells?
One way would be to loop over all cells, is there any other way?
I want to achieve a sheet without any formulas having just calculated values

See the Snipet here. For more Details
// existing Workbook setup
FormulaEvaluator evaluator = workbook.getCreationHelper().createFormulaEvaluator();
// existing Sheet, Row, and Cell setup
if (cell.getCellType() == CellType.FORMULA) {
switch (evaluator.evaluateFormulaCell(cell)) {
case BOOLEAN:
System.out.println(cell.getBooleanCellValue());
break;
case NUMERIC:
System.out.println(cell.getNumericCellValue());
break;
case STRING:
System.out.println(cell.getStringCellValue());
break;
}
}

Apache POI getStringCellValue() printing null

I'm getting a weird error while trying to read the Cell values through Apache POI in java:
System.out.println(row.getCell(13, Row.CREATE_NULL_AS_BLANK).getStringCellValue())
is always printing null, even after specifying the Missing policy as Row.CREATE_NULL_AS_BLANK.My writing logic to the Cell is :
public void writeCell( String value, Sheet sheet, int rowNum, int colNum)
{
Row row = sheet.getRow(rowNum);
if (row == null)
{
row = sheet.createRow(rowNum);
}
Cell cell = row.createCell(colNum, Cell.CELL_TYPE_STRING);
if (value == null)
{
return;
}
cell.setCellValue(value);
}
When I'm writing to Cell at colNum = 13 , the String value object is null. I'm not able to sort out this issue.

This line doesn't do what you seem to think it does:
System.out.println(row.getCell(13, Row.CREATE_NULL_AS_BLANK).getStringCellValue())
In effect, that's doing
Cell cell = row.getCell(13);
if (cell == null) { cell = row.createCell(13, Cell.CELL_TYPE_BLANK); }
So, if there is nothing in that cell, it creates it as an empty blank one
Then, you try doing:
cell.getStringCellValue()
This only works for String cells, and in the missing case you've told POI to give you a Blank new cell!
If you really just want a string value of a cell, use DataFormatter.formatCellValue(Cell) - that returns a String representation of your cell including formatting. Otherwise, check the type of your cell before trying to fetch the value!

The getStringCellValue() on the Cell interface would return "" if your code worked as supposed (setting the call blank).
Is it not possible that value for col id 13 is not null but "null"?

Get cell by its content

Is there a way to get the cell object or coordinate by the data the cell contains?
For example if the cell with coordinates (1;5) contains the string "FINDME", i'd like to do something like Workbook.GetCellByData("FINDME") and it should return the Cell object or (1;5).
I have found a code snippet on the Apache POI website that could be useful. I could just read the whole workbook and find the data with an IF-statement, but that's kind of dirty...
EDIT:
I have coded the "dirty" solution as follows:
public Cell getCellByContent(String data) {
for (Row row : wb.getSheetAt(0)) {
for (Cell cell : row) {
if (cell.getCellType() == Cell.CELL_TYPE_STRING){
System.out.println(String.format("Found String type at (%s,%s) and read: %s", row.getRowNum(), cell.getColumnIndex(), cell.getStringCellValue()));
if (cell.getStringCellValue() == data) { //HERE
return cell; //HERE
} //HERE
}
}
}
System.out.println("Can't find it bruh!");
return null;
For some reason it fails at the if-statement. Id like to get the Cell with the content "%title%".
Output:
Found String type at (0,0) and read: %title% <------ IT'S RIGHT HERE!
Found String type at (2,0) and read: Test Information
...
Can't find it bruh!
Does someone have an idea why this is not working?

To fix the dirty solution replace
if (cell.getStringCellValue() == data)
with
if (cell.getStringCellValue().equals(data))

I think I can help you. you just make two for() loops for rows and columns and then type Workbook.getCellValue(i,j) (i is the number of the row and j is the number of the column

POI says Cell is empty but cell has a value

I'm opening a Excel (xls) file in my Java Application with POI.
There are 30 Lines in this Excelfile.
I need to get the Value at ColumnIndex 9.
My code:
Workbook wb;
wb = WorkbookFactory.create(inp);
Sheet sheet = wb.getSheetAt(0);
for (Row row : sheet) {
if (row.getLastCellNum() >= 6) {
for (Cell cell : row) {
if(cell.getColumnIndex == 9) {
//do something
}
}
}
}
Every Row in Excel has Values in Columns 1-14.
My problem is, only some Values are recognized. I wrote the same value in every cell in ColumnIndex 9 (10th Column in my Excel sheet), but the Problem is still the same.
What could cause this problem?

Make sure you set the same Date format for all cells in column (select column and set format explicity) And i belive using DataUtil class to get data is more appropriate, than call cell.getDateCellValue().

POI uses 0 based counting for columns. So, if you want the 9th Column, you need to fetch the cell with index 8, not 9. It looks like you're checking for column with index 9, so are one column out.
If you're not sure about 0 based indexing, then the safest thing is to use the CellReference class to help you. This will translate between Excel style references, eg A1, and POI style 0-based offsets eg 0,0. Use something like:
CellReference ref = new CellReference("I10");
Row r = sheet.getRow(ref.getRow());
if (r == null) {
// That row is empty
} else {
Cell c = r.getCell(ref.getCol());
// c is now the cell at I10
}

Seems to be a Problem with the excel document(s).
Converting them to csv and then back to xls solves the problem.

Empty cells issue when extracting excel data using POI in JAVA?

I have just Extracted the cells from the excel sheet using Apache POI, everything is working fine. But whenever there is an empty cell, the very next right cell data is what I get as a output. But, if exists a value in the latter, the desired output is coming.
This is the logic I've written.
Iterator<Row> rowIterator=sheet.rowIterator();
while(rowIterator.hasNext())
{
ExtractedRowsString extRows=new ExtractedRowsString();
ArrayList<HSSFCell> list=new ArrayList<HSSFCell>();
HSSFRow row=(HSSFRow) rowIterator.next();
Iterator<Cell> cellIterator=row.cellIterator();
while(cellIterator.hasNext())
{
HSSFCell cell=(HSSFCell)cellIterator.next();
list.add(cell);
}
if(check)
{
addBean(list,extRows);
print(extRows);
}
check=true;
}
What may be the problem?
EDITED :
public static void addBean(ArrayList list,ExtractedRowsString extRows)
{
for(int i=0;i<list.size();i++)
{
switch(i)
{
case 0:
extRows.setSchool_success_id((list.get(i)).toString());
break;
case 1:
extRows.setPem_id( (list.get(i)).toString() );
break;
case 2:
extRows.setDistrict_code((list.get(i)).toString());
break;
case 3:
extRows.setDistrict((list.get(i)).toString());
break;
}
}
}

From the docs:
cellIterator
public java.util.Iterator cellIterator()
Specified by:
cellIterator in interface Row
Returns:
cell iterator of the physically
defined cells. Note that the 4th
element might well not be cell 4, as
the iterator will not return
un-defined (null) cells. Call
getCellNum() on the returned cells to
know which cell they are. As this only
ever works on physically defined
cells, the Row.MissingCellPolicy has
no effect.
In short, empty cells do not show up in the iterator so you always have to check which cell you got.

ArrayList does permit adding nulls. Also what is the addBean method doing (skipping nulls or empty strings perhaps?) Can you post a small working code that one can run ?