Hi Friend,

Try the following code:

<%@ page import="org.apache.poi.hssf.usermodel.HSSFSheet"%>
<%@ page import="org.apache.poi.hssf.usermodel.HSSFWorkbook"%>
<%@ page import="org.apache.poi.hssf.usermodel.HSSFCell"%>
<%@ page import="org.apache.poi.hssf.usermodel.HSSFRow"%>
<%@ page import="java.io.*" %>
<%try{
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet(" sheet");
HSSFRow row = sheet.createRow((short)0);
HSSFCell cell = row.createCell((short)0);
cell.setCellValue(1);
row.createCell((short)1).setCellValue("A");
row.createCell((short)2).setCellValue("Delhi");
row.createCell((short)3).setCellValue("aroseindia.net");

FileOutputStream fileOut = new FileOutputStream("c:\\data1.xls");
wb.write(fileOut);
fileOut.close();
Runtime rt = Runtime.getRuntime();
rt.exec("cmd.exe /C start C:\\data1.xls");
}catch ( Exception ex ){
}
%>

Hope that the above code will be helpful for you.
Thanks