Writing To Excel File Using Apache POI

This is a java tutorial where I have demonstrated how to use Apache POI to write data to any excel/spread sheet. The program handles HSSF model of spreadsheet.

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 * @author Kushal Paudyal
 * www.sanjaal.com/java
 * Last Modified on 02/16/2008
package com.kushal.util;

import java.io.FileOutputStream;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class CreateExcelFile {
    public static void main( String [] args ) {
    	/**Name of excel file that we are going to create**/
    	String fileName="C:\\temp\\testPOIWrite.xls";
    /** This method writes data to new excel file **/
	 private static void writeDataToExcelFile(String fileName) {
	     String [][] excelData = preapreDataToWriteToExcel();		 
		 HSSFWorkbook myWorkBook = new HSSFWorkbook();
		 HSSFSheet mySheet = myWorkBook.createSheet();
		 HSSFRow myRow = null;
		 HSSFCell myCell = null;
		 for (int rowNum = 0; rowNum < excelData[0].length; rowNum++){    
			 myRow = mySheet.createRow(rowNum);
			 for (int cellNum = 0; cellNum < 4 ; cellNum++){
		         myCell = myRow.createCell(cellNum);
			 FileOutputStream out = new FileOutputStream(fileName);
		 }catch(Exception e){ e.printStackTrace();}			
	 /**Prepare some demo data as excel file content**/
	 public static String [][] preapreDataToWriteToExcel(){
		 String [][] excelData = new String [4][4];
		 excelData[0][0]="First Name";
		 excelData [0][1]="Last Name";
		 excelData[2][1]="Ram Robinson";
		 excelData[2][3]="TX, USA";
		 excelData[3][3]="NY, USA";
		 return excelData;

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4 Responses to Writing To Excel File Using Apache POI

  1. Maduander says:

    Hay Sir….
    Thanks for your Example. and it’s working well. i was connected the mysql database and get excel sheet completely.but sir please explain how to colorful it(example :- how to change color,font,layout in cell)….
    can u help me …..

    Thanks ….

  2. jetti says:

    Thanks for providing this example.But i want to generate an excel,which is taken data from HTML/XML code directly converted to Excel.

    Is it possible ?

  3. Christopher Clarke says:

    I wish I knew what Apache poi was. I guess there is a lot more java I need to learn. I tried reading this but I didn’t understand all of it at all. A little embarrassing. But Im saving this page just in case I learn about that this semester.

  4. zz says:

    There is a simpler solution now:

    // officetools.jar available at http://www.dancrintea.ro/xls-to-pdf/

    import officetools.OfficeFile;

    FileInputStream fis=new FileInputStream(new File(“test.xls”));

    OfficeFile f=new OfficeFile(fis,”localhost”,”8100″, false);

    // read a column
    for(int i=0;i<=99;i++)
    System.out.println( f.setCell(1,i) );

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