Apache POI can be used to create a cell in a Given Excel file at specific position. Apache POI is an API provided by Apache foundation.

Steps to Create a Cell at 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 POI library installed
2. Add following maven dependency in pom.xml file
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   <!-- https://mvnrepository.com/artifact/org.apache.poi/poi --> <dependency>       <groupId>org.apache.poi</groupId>       <artifactId>poi</artifactId>       <version>3.12</version>     </dependency>     <dependency>       <groupId>org.apache.poi</groupId>       <artifactId>poi-ooxml</artifactId>       <version>3.12</version>     </dependency>

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3. Write java code in javaresource folder
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   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;    public class CreateCellAtSpecificPosition {     public static void main(String[] args) throws FileNotFoundException, IOException     {         // Create a workbook instances         Workbook wb = new HSSFWorkbook();            OutputStream os = new FileOutputStream("Geeks.xlsx");            // Creating a sheet using predefined class provided by Apache POI         Sheet sheet = wb.createSheet("Company Prepration");            // 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");            // writing the content to Workbook         wb.write(os);            System.out.println("given cell is created at position (1, 1)");     } }

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Output

given cell is created at position (1, 1)

Output in Geeks.xlsx File