Hi Friend,

1)excel.jsp:

<%@ page import="org.apache.poi.hssf.usermodel.HSSFSheet"%>
<%@ page import="org.apache.poi.hssf.usermodel.HSSFWorkbook"%>
<%@page import=" org.apache.poi.hssf.usermodel.HSSFRow"%>
<%@page import=" org.apache.poi.hssf.usermodel.HSSFCell"%>
<%@ page import="java.io.*" %>
<%@ page import="java.util.*" %>
<%
try{
HSSFWorkbook hwb = new HSSFWorkbook();
HSSFSheet sheet1 = hwb.createSheet("Sheet1");
HSSFSheet sheet2 = hwb.createSheet("Sheet2");
HSSFRow rowhead = sheet1.createRow((short)0);
rowhead.createCell((short) 0).setCellValue("Roll No");
rowhead.createCell((short) 1).setCellValue("Name");
rowhead.createCell((short) 2).setCellValue("Marks");
rowhead.createCell((short) 3).setCellValue("Grade");

HSSFRow row1 = sheet1.createRow((short)1);
row1.createCell((short)0).setCellValue("1");
row1.createCell((short)1).setCellValue("AAAA");
row1.createCell((short)2).setCellValue("90");
row1.createCell((short)3).setCellValue("A");

HSSFRow row2 = sheet1.createRow((short)2);
row2.createCell((short) 0).setCellValue("2");
row2.createCell((short) 1).setCellValue("BBBB");
row2.createCell((short) 2).setCellValue("70");
row2.createCell((short) 3).setCellValue("B");

HSSFRow rowhead1 = sheet2.createRow((short)0);
rowhead1.createCell((short) 0).setCellValue("Class");
rowhead1.createCell((short) 1).setCellValue("Age");
rowhead1.createCell((short) 2).setCellValue("Address");
rowhead1.createCell((short) 3).setCellValue("Phone Number");

HSSFRow row3 = sheet2.createRow((short)1);
row3.createCell((short)0).setCellValue("5");
row3.createCell((short)1).setCellValue("10");
row3.createCell((short)2).setCellValue("Rohini,Delhi");
row3.createCell((short)3).setCellValue("1111111111");

HSSFRow row4 = sheet2.createRow((short)2);
row4.createCell((short) 0).setCellValue("6");
row4.createCell((short) 1).setCellValue("11");
row4.createCell((short) 2).setCellValue("Vasant kunj,Delhi");
row4.createCell((short) 3).setCellValue("2222222222");
sheet1.setSelected(true);

sheet2.setSelected(false);

FileOutputStream fileOut = new FileOutputStream("c:\\selectingSheet.xls");
hwb.write(fileOut);
fileOut.close();
out.println("Your excel file has been generated");
} catch ( Exception ex ) {
System.out.println(ex);

}%>
<a href="readExcel.jsp">Read And Edit Excel File</a>

continue..

2)readExcel.jsp

<%@page import="java.io.*"%>
<%@page import="java.util.*"%>
<%@page import=" org.apache.poi.hssf.usermodel.HSSFSheet"%>
<%@page import=" org.apache.poi.hssf.usermodel.HSSFWorkbook"%>
<%@page import=" org.apache.poi.hssf.usermodel.HSSFRow"%>
<%@page import=" org.apache.poi.hssf.usermodel.HSSFCell"%>
<form >
<%
short a=0;
short b=1;
short c=2;
short d=3;
int i=0;
String filename ="C:/selectingSheet.xls";
if (filename != null && !filename.equals("")) {
try{
FileInputStream fs =new FileInputStream(filename);
HSSFWorkbook wb = new HSSFWorkbook(fs);
for (int k = 0; k < wb.getNumberOfSheets(); k++){
int j=i+1;
%>
Sheet <%=j%><%
HSSFSheet sheet = wb.getSheetAt(k);
int rows = sheet.getPhysicalNumberOfRows();
for (int r = 1; r < rows; r++){
HSSFRow row = sheet.getRow(r);
if (row != null) {
int cells = row.getPhysicalNumberOfCells(); %><br><%
HSSFCell cell1 = row.getCell(a);
if (cell1 != null){
String value = null;
switch (cell1.getCellType()){
case HSSFCell.CELL_TYPE_FORMULA :
value = "FORMULA ";
break;
case HSSFCell.CELL_TYPE_NUMERIC :
value = ""+cell1.getNumericCellValue();
break;
case HSSFCell.CELL_TYPE_STRING :
value = cell1.getStringCellValue();
break;
}
%>
<input type="text" name="roll" value="<%=value%>"><%
}
HSSFCell cell2 = row.getCell(b);
if (cell2 != null){
String value = null;
switch (cell2.getCellType()){
case HSSFCell.CELL_TYPE_FORMULA :
value = "FORMULA ";
break;
case HSSFCell.CELL_TYPE_NUMERIC :
value = ""+cell2.getNumericCellValue();
break;
case HSSFCell.CELL_TYPE_STRING :
value = cell2.getStringCellValue();
break;
}%>
<input type="text" name="name" value="<%=value%>">
<% }
HSSFCell cell3 = row.getCell(c);
if (cell3 != null){
String value = null;
switch (cell3.getCellType()){
case HSSFCell.CELL_TYPE_FORMULA :
value = "FORMULA ";
break;
case HSSFCell.CELL_TYPE_NUMERIC :
value = ""+cell3.getNumericCellValue();
break;
case HSSFCell.CELL_TYPE_STRING :
value = cell3.getStringCellValue();
break;
} %>
<input type="text" name="marks" value="<%=value%>">
<% }
HSSFCell cell4 = row.getCell(d);
if (cell4 != null){
String value = null;
switch (cell4.getCellType()){
case HSSFCell.CELL_TYPE_FORMULA :
value = "FORMULA ";
break;
case HSSFCell.CELL_TYPE_NUMERIC :
value = ""+cell4.getNumericCellValue();
break;
case HSSFCell.CELL_TYPE_STRING :
value = cell4.getStringCellValue();
break;
}
%> <input type="text" name="grade" value="<%=value%>">
<% } }%>
<input type="submit" value="Edit">
<% }%>
<br><br><br><br><%
i++;}}
catch (Exception ex){
} }
%> </form>

Thanks