Create Excel file in Java

Question

I want to create an Excel file and write data just like writing a text file with Java. I tried to change file extension from .txt to .xls. But I want to bold letters in the Excel file. How can I do that?

I have tried using the JXL API, but every time I have to create a label I want add no label. Can't O edit row and column of the table?

Answer 1

You can use Apache POI for creating native binary xls files.

Or you can use JExcelApi which is another, and somewhat light-weight as far as I can remember, Java library for Excel.

Answer 2

I used also JXLS: it receives the data as a Map and a template EXCEL with the correct syntax and return the file correctly populated. The data in every cell must be a JavaBean with visibility public.

It not worws if you must insert data in more than 1 sheet: in this case I used POI.

Answer 3

//Find jar from here "http://poi.apache.org/download.html"
import  java.io.*;
import  org.apache.poi.hssf.usermodel.HSSFSheet;
import  org.apache.poi.hssf.usermodel.HSSFWorkbook;
import  org.apache.poi.hssf.usermodel.HSSFRow;

public class CreateExlFile{
    public static void main(String[]args) {
        try {
            String filename = "C:/NewExcelFile.xls" ;
            HSSFWorkbook workbook = new HSSFWorkbook();
            HSSFSheet sheet = workbook.createSheet("FirstSheet");  

            HSSFRow rowhead = sheet.createRow((short)0);
            rowhead.createCell(0).setCellValue("No.");
            rowhead.createCell(1).setCellValue("Name");
            rowhead.createCell(2).setCellValue("Address");
            rowhead.createCell(3).setCellValue("Email");

            HSSFRow row = sheet.createRow((short)1);
            row.createCell(0).setCellValue("1");
            row.createCell(1).setCellValue("Sankumarsingh");
            row.createCell(2).setCellValue("India");
            row.createCell(3).setCellValue("[e-mail]");

            FileOutputStream fileOut = new FileOutputStream(filename);
            workbook.write(fileOut);
            fileOut.close();
            workbook.close();
            System.out.println("Your excel file has been generated!");

        } catch ( Exception ex ) {
            System.out.println(ex);
        }
    }
}