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Write data in .xls and .xlsx (Excel) file using POI

- posted by Shashikant Pandey

We all know the importance of a file and how frequently we use it, for example, either we create a new file, update or delete something from it. Selenium helps to automate file manipulation.

So, In this blog, we will learn how to install the poi jar file, which jar file is required for that and how to perform the read operation on excel with the help of JAVA IO package and APACHE POI library.

POI library is enough to read write both XLS and XLSX file.

Note: For .XLS file read-write, we can use .JXL jar file but it won’t support to .xlsx file.

Let’s begin the journey: –  

Step 1. If you haven’t used eclipse then Install the Eclipse latest version.

Step 2. If you haven’t added WebDriver then download the webdriver jar file and add to library.

Step 3. If you are using Maven then use the following dependencies.

<!– –>






Or else you can directly download the latest POI jar file from

Step 4. Once the jar file is downloaded then unzip the file and add library file into your project.

Right click on your project -> Build Path -> Configure Build Path-> Library -> Add External Jar-> ok

Below are Java interfaces and classes that we will use for read/write xls and xlsx file in POI

XSSFWorkbook: – Is a class representation of XLSX file.

HSSFWrokbook: – Is a class representation of XLS file.

XSSFSheet:- XSSFSheet classes implement this interface represent XLSX file’s sheet.

HSSFSheet: – HSSFSheet classes implement this interface XLS file’s sheet.

XSSFRow:- XSSFSheet classes implement this interface represent a row of XLSX file.

HSSFRow: – HSSFSheet classes implement this interface represent a row of XLS file.

XSSFCell:- XSSFSheet classes implement this interface represent a cell in a row of XLSX file.

HSSFCell: – HSSFSheet classes implement this interface represent a cell in a row of XLS file.

Write Data in an Excel sheet

package Account;





import org.apache.poi.xssf.usermodel.XSSFCell;

import org.apache.poi.xssf.usermodel.XSSFRow;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class WriteInExcel {

public static void main(String args[])throws IOException{

String ctVal= “Status”;

// File Location

File src = new File(“D://Dazeworks//Selenium Projects//Credential.xlsx”);

// Open File using FileInputStream class

           FileInputStream fis = new FileInputStream(src);


           // Create Workbook instance holding reference to .xlsx file

           XSSFWorkbook workbook = new XSSFWorkbook(fis);


           // Get first/desired sheet from the workbook

           XSSFSheet sheet = workbook.getSheetAt(0);

            // Entering a value in Row[0] and Cell[4]. Here cell is nothing but Column number



            // If user want to enter a value as per choice row then  create row

            XSSFRow r = sheet.createRow(14);

            //Create a cell for the value where you want to enter.

            XSSFCell c = r.createCell(10);

            //Entering the Value for particular cell

            c.setCellValue(“How’s Josh????”);

           //Using FileOutputStream to specify output file name

           FileOutputStream fos = new FileOutputStream(src);

           // Writing the values in workbook


            //File close



          System.out.println(“Value inserted successfully”);



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