Creating a Cell at specific position in Excel file using Java

Apache POI is an open-source java library to create and manipulate various file formats based on Microsoft Office. Using POI, one should be able to perform create, modify and display/read operations on the following file formats/ it can be used to create a cell in a Given Excel file at a specific position. Apache POI is an API provided by the Apache foundation.

Steps to Create a Cell at a Specific position in a given Excel File

1. Create a maven project(Maven is a build automation tool used primarily for Java projects) in eclipse or a Java project with the POI library installed
2. Add the following maven dependency in the pom.xml file
3. Write java code in javaresource folder

Example

Java

// Java Program to Demonstrate Creation Of Cell
// At Specific Position in Excel File

// Importing required classes
import java.io.*;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;

// Class
// CreateCellAtSpecificPosition
public class GFG {

    // Main driver method
    public static void main(String[] args)
        throws FileNotFoundException, IOException
    {

        // Creating a workbook instances
        Workbook wb = new HSSFWorkbook();

        // Creating output file
        OutputStream os
            = new FileOutputStream("Geeks.xlsx");

        // Creating a sheet using predefined class
        // provided by Apache POI
        Sheet sheet = wb.createSheet("Company Preparation");

        // Creating a row at specific position
        // using predefined class provided by Apache POI

        // Specific row number
        Row row = sheet.createRow(1);

        // Specific cell number
        Cell cell = row.createCell(1);

        // putting value at specific position
        cell.setCellValue("Geeks");

        // Finding index value of row and column of give
        // cell
        int rowIndex = cell.getRowIndex();
        int columnIndex = cell.getColumnIndex();

        // Writing the content to Workbook
        wb.write(os);

        // Printing the row and column index of cell created
        System.out.println("Given cell is created at "
                           + "(" + rowIndex + ","
                           + columnIndex + ")");
    }
}

Output: On console

Given cell is created at (1,1)

Output: Inside file named ‘Geeks.xlsx’