Excel Found unreadable content -POI XSSFWorkbook setcellvalue - apache-poi

Question

I am trying to setcellvalue for xlsx file , Program works fine with no error , but while opening the xlsx file it throws an error saying Excel Found unreadable content
public boolean setCellData(String sheetName,String colName,int rowNum, String data){
try{
fis = new FileInputStream(path);
workbook = new XSSFWorkbook(path);
if(rowNum<=0)
return false;
int index = workbook.getSheetIndex(sheetName);
int colNum=-1;
if(index==-1)
return false;
sheet = workbook.getSheetAt(index);
row=sheet.getRow(0);
for(int i=0;i<row.getLastCellNum();i++){
//System.out.println(row.getCell(i).getStringCellValue().trim());
if(row.getCell(i).getStringCellValue().trim().equals(colName))
colNum=i;
}
if(colNum==-1)
return false;
sheet.autoSizeColumn(colNum);
row = sheet.getRow(rowNum-1);
if (row == null)
row = sheet.createRow(rowNum-1);
cell = row.getCell(colNum);
if (cell == null)
cell = row.createCell(colNum);
// cell style
//CellStyle cs = workbook.createCellStyle();
//cs.setWrapText(true);
//cell.setCellStyle(cs);
cell.setCellValue(data);
fileOut = new FileOutputStream(path);
workbook.write(fileOut);
fileOut.close();
}
catch(Exception e){
e.printStackTrace();
return false;
}
return true;
}

Answer 1

You have initialized FileInputStream, but not used that. Please replace
fis = new FileInputStream(path);
workbook = new XSSFWorkbook(path);
with
fis = new FileInputStream(path);
workbook = new XSSFWorkbook(fis);
this works on my end and not showing any error.