Make column read-only using apache poi

Question

I am using apache-poi for generating the excel file. I need to make the 4th column read-only and the remaining 2 columns will be editable by the user.

I am using

Answer 1

You have to protect the whole sheet and unlock the cells which should be editable:

String file = "c:\\poitest.xlsx";
FileOutputStream outputStream = new FileOutputStream(file);
Workbook wb = new XSSFWorkbook();

CellStyle unlockedCellStyle = wb.createCellStyle();
unlockedCellStyle.setLocked(false);

Sheet sheet = wb.createSheet();
sheet.protectSheet("password");
Row row = sheet.createRow(0);
Cell cell = row.createCell(0);
cell.setCellValue("TEST");
cell.setCellStyle(unlockedCellStyle);

wb.write(outputStream);
outputStream.close();