@SuppressWarnings("unchecked")
public static void readData() throws Exception {

    String filename = "C://Users//ke00348200//Desktop//Cleaning_test/AACR (orals) 1st Itn INPUT.xlsx";
    FileInputStream fis = null;
    fis = new FileInputStream(filename);

    XSSFWorkbook workbook = new XSSFWorkbook(fis);

    XSSFSheet sheet = workbook.getSheetAt(0);
    //we will search for column index containing string "Your Column Name" in the row 0 (which is first row of a worksheet
    String columnWanted = "Title";
    Integer columnNo = null;
    //output all not null values to the list
    List<Cell> cells = new ArrayList<Cell>();

    Row firstRow = sheet.getRow(0);

    for(Cell cell:firstRow){
        if (cell.getStringCellValue().equals(columnWanted))
        {
            columnNo = cell.getColumnIndex();
        }
    }
    if (columnNo != null){
        for (Row row : sheet) {
            Cell c = row.getCell(columnNo);
            if (c == null || c.getCellType() == Cell.CELL_TYPE_BLANK) {
                // Nothing in the cell in this row, skip it
            } else {
                System.out.println("data>>"+c.getStringCellValue());
                cells.add(c);
            }
        }
    }else{
        System.out.println("could not find column " + columnWanted + " in first row of " + fis.toString());
    }

}