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In Java ,how to use org.apache.poi.hssf and get the value of two columns alone with the column name from the excel sheet that is uploaded

Hi I am trying to get the values of two columns with the column name. I have uploaded an excel sheet and I have to fetch the values of this two columns and then save it in DB. Can someone help me with this

Include the latest POI jar
FileInputStream inputStream = ew FileInputStream(" Excel Path ");
Workbook workbook = new XSSFWorkbook(inputStream);
Sheet workSheet = workbook.getSheet(0); // put your sheet number
Iterator<Row> rowIterator = workSheet.iterator();
while (rowIterator.hasNext()) {
Row nextRow = rowIterator.next();
Cell cell = nextRow.getCell("col name");
String cellData = cell.getStringCellValue();}

How can two set of values written to an Excel file in TestNG which has been taken from the script iteslf? I am using apache poi for this purpose

I have been testing an application where i have to write a set of results to the excel file, the values are taken from the script. But the problem is that first I have to set the column headings like "Sl No" and "Name" after that I have to print the values against the particular cells. The thing is that am not able to write the results under the particular box.
I am new to apache poi. Can anyone help me with this issue.
Code for setting the excel and headings are shown below,
String FileName = "C://Users//Desktop//filename.xlsx";
XSSFWorkbook workBook = new XSSFWorkbook();
XSSFSheet sheet = workBook.createSheet("Distributor");
Row row = sheet.createRow(0);
Cell cell = row.createCell(0);
cell.setCellValue("Sl No");
Cell cell2 = row.createCell(1);
cell2.setCellValue("Name");
FileOutputStream outputStream = new FileOutputStream(new File(FileName));
workBook.write(outputStream);
outputStream.close();

Apache POI create rows or table inside cell in excel

I have come across need to add table or rows inside cell in excel.
I googled but did't found any thing.
Please help me know how to do it.

are you looking for this ?
Workbook wb = new HSSFWorkbook();
//Workbook wb = new XSSFWorkbook();
CreationHelper createHelper = wb.getCreationHelper();
Sheet sheet = wb.createSheet("new sheet");
// Create a row and put some cells in it. Rows are 0 based.
Row row = sheet.createRow((short)0);
// Create a cell and put a value in it.
Cell cell = row.createCell(0);
cell.setCellValue(1);
// Or do it on one line.
row.createCell(1).setCellValue(1.2);
row.createCell(2).setCellValue(
createHelper.createRichTextString("This is a string"));
row.createCell(3).setCellValue(true);
// Write the output to a file
FileOutputStream fileOut = new FileOutputStream("workbook.xls");
wb.write(fileOut);
fileOut.close();

Lock single column in Excel using Apache POI

I want to create a Excel in which only a specific column is locked(Read-only), and the rest are editable,
I am using the following approach, but that doesn't seem to work.
Create two CellStyles, one with setLocked(true) and other with setLocked(false).
Then apply the locked style for all the cells in the column which needs to be locked, and the unlocked style for all the other cells.
Protect the sheet using sheet.protectSheet("");
But when I open the created Excel in open office, I notice that all the cells are locked!
None of them are editable.
How can I achieve the above requirement?
P.S : I cant use the data validation approach.

If you do the opposite it works. Protect the whole sheet and call setLocked(false) for 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();

Unable To Write Multiple Lines in Excel Using POI

I have a situation where I will be reading multiple lines and after some logic I need to write the lines in an Excel Sheet. I am using Apache POI for this purpose. However, the problem that I am facing is that, only the last line (from the loop) is being written to the Excel
Can someone please help me on this or provide some code snippet?
Thanks

Workbook wb = new XSSFWorkbook(); //or new HSSFWorkbook();
Sheet sheet = wb.createSheet();
Row row = sheet.createRow(2);
Cell cell = row.createCell(2);
cell.setCellValue("Use \n with word wrap on to create a new line");
//to enable newlines you need set a cell styles with wrap=true
CellStyle cs = wb.createCellStyle();
cs.setWrapText(true);
cell.setCellStyle(cs);
//increase row height to accomodate two lines of text
row.setHeightInPoints((2*sheet.getDefaultRowHeightInPoints()));
//adjust column width to fit the content
sheet.autoSizeColumn((short)2);
FileOutputStream fileOut = new FileOutputStream("ooxml-newlines.xlsx");
wb.write(fileOut);
fileOut.close();
Using newlines in cells