Creating excel sheet in Java

In this tutorial we see how to create excel sheet in Java using Apache POI library. By using Apache POI library we can create multiple Microsoft files like .xls, .ppt, .doc etc., Lets start this tutorial with creating excel sheet (.xls) file using POI jar. Before starting our program we need POI jar file which can downloaded from below link

POI jar file (Download latest version)

public class EmployeeDetails{
 
 private int empId;
 private String empName;
 private String designation;
 
 public EmployeeDetails(int empId, String empName, String designation){
  this.empId = empId;
  this.empName = empName;
  this.designation = designation;
 }
 
 public int getEmpId() {
  return empId;
 }
 public String getEmpName() {
  return empName;
 }
 public String getDesignation() {
  return designation;
 }
}

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;

public class CreateExcel {

 public static void main(String[] args) {
  
  List<EmployeeDetails> list = populateData();
  
  createExcelSheet(list, "D:\\test.xls");
 }
 
 public static List<EmployeeDetails> populateData(){
  List<EmployeeDetails> list = new ArrayList<EmployeeDetails>();
  try{
   list.add(new EmployeeDetails(1, "Raj", "Software Engineer"));
   list.add(new EmployeeDetails(2, "Kamal", "Technical Lead"));
   list.add(new EmployeeDetails(3, "Steve", "Senior Software Engineer"));
   list.add(new EmployeeDetails(4, "David", "Quality Engineer"));
   list.add(new EmployeeDetails(5, "John", "Field Engineer"));
  }catch (Exception e) {
   e.printStackTrace();
  }
  return list;
 }
 
 public static void createExcelSheet(List<EmployeeDetails> list, String fileName){
  
  try {
   
   //Creating Work Book
   HSSFWorkbook workBook = new HSSFWorkbook();
   
   //Creating sheet
   HSSFSheet sheet = workBook.createSheet("Employee Details");
    
   
   Row row = sheet.createRow(0);
   Cell cell = row.createCell(0);
   cell.setCellValue("Employee Id");
   cell = row.createCell(1);
   cell.setCellValue("Employee Name");
   cell = row.createCell(2);
   cell.setCellValue("Designation");
   
   for(int i=0;i<list.size();i++){
    
    EmployeeDetails obj = list.get(i); 
    row = sheet.createRow(i+1);
    cell = row.createCell(0);
    cell.setCellValue(obj.getEmpId());
    cell = row.createCell(1);
    cell.setCellValue(obj.getEmpName());
    cell = row.createCell(2);
    cell.setCellValue(obj.getDesignation());
   }
   
      FileOutputStream fos = new FileOutputStream(new File(fileName));
      workBook.write(fos);
      fos.close();
      System.out.println("Excel sheet created successfully..");
       
  } catch (Exception e) {   
      e.printStackTrace();
  }  
 }
}

OUTPUT: