// import statements
public class POIforgfgRead {
public static void main(String[] args)
    {
        try {
            FileInputStream file = new FileInputStream(new File("gfgcontribute.xlsx"));

            // Create Workbook instance holding reference to .xlsx file
            XSSFWorkbook workbook = new XSSFWorkbook(file);

            // Get first/desired sheet from the workbook
            XSSFSheet sheet = workbook.getSheetAt(0);

            // Iterate through each rows one by one
            Iterator<Row> rowIterator = sheet.iterator();
            while (rowIterator.hasNext()) {
                Row row = rowIterator.next();
                // For each row, iterate through all the columns
                Iterator<Cell> cellIterator = row.cellIterator();

                while (cellIterator.hasNext()) {
                    Cell cell = cellIterator.next();
                    // Check the cell type and format accordingly
                    switch (cell.getCellType()) {
                    case Cell.CELL_TYPE_NUMERIC:
                        System.out.print(cell.getNumericCellValue() + "t");
                        break;
                    case Cell.CELL_TYPE_STRING:
                        System.out.print(cell.getStringCellValue() + "t");
                        break;
                    }
                }
                System.out.println("");
            }
            file.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
    }
}