doubt in Session parameters

Can we assign a session variable to a form property

Suppose I have a session variable named "username"........I do the following:

<%
String user=(String) session.getAttribute("username");
if(user==null) user="";
%>

Now can I write:

<jsp:setProperty name="details" property= "*" />

<jsp:setProperty name="details" property="id" value="user" />

If no, then how can I use the session parameter as a form parameter?

You can use expression in the value attribute of set property, it's allowed

Try

thanks.........I don't know whether it worked or not because when I am sending the value to the java file I still get the same result as follows:
false ACCOUNT NUMBER: 5456
ACCOUNT TYPE:null
USERNAME:null
ID:
BALANCE:null

here are the codes:

viewuserdetails.jsp

<%@ page language="java" %>
<%@ page import= "details.viewaccountbalance" %>

<%
String user=(String) session.getAttribute("username");
if(user==null) user="";
%>

<jsp:useBean id= "details" scope= "session" class= "details.viewaccountbalance" />

<jsp:setProperty name="details" property= "*" />

<table border="0" width="1048" height="73">
<tr>
<td width="150">   </td>
<td width="550">
<div align="right"><h4><font face="Lucida Console"><font face="Times New Roman" style="font-weight: normal;">Welcome back,</font> </font><%=user%>

<center><h1><font face="Calibri" color="#515151">WELCOME TO THE VIEW ACCOUNT DETAILS IN PAGE</font></h1></center>
        <br>
        <br>

<table border="0" width="700">
            <tr>
                <td width="150"> </td>
                <td width="550">
                    <form method="get">
                        <h3><font size="4" face="Cambria"><font size="4" face="Calibri" color="#800080">ACCOUNT NO:</font><font face="Calibri"> </font> </font>          <input type="text" name="acno" size="25"></h3>

<jsp:setProperty name="details" property="id" value="${sessionScope.user}" />

<%
                    if (request.getParameter("acno") != null) {
        %>

<%@ include file="detailsproperties.jsp" %>

<%

}

%>
        </body>
</html>

detailsproperties.jsp

viewaccountbalance.java

package details;

import java.sql.*;

public class viewaccountbalance {

private String acno;
	private String actype;
	private String username;
	private String id;
	private String balance;
	private String check;

public void setCheck(String check)
	{
		this.check=check;
	}

public void setAcno(String acno)
	{
		this.acno=acno;
	}
	public void setActype(String actype)
	{
		this.actype=actype;
	}
	public void setUsername(String username)
	{
		this.username=username;
		
	}
	public void setId(String id)
	{
		this.id=id;
		
	}
	public void setBalance(String balance)
	{
		this.balance=balance;
	}

public String getCheck()
	{
		return check;
	}

public String getAcno()
	{
		return acno;
	}
	public String getActype()
	{
		 return actype;
	}
	public String getUsername()
	{
		return username;
		
	}
	public String getId()
	{
		return id;
		
	}
	public String getBalance()
	{
		return balance;
	}

public void check() throws ClassNotFoundException, SQLException 
	{
		Class.forName("oracle.jdbc.driver.OracleDriver");
		Connection conn=DriverManager.getConnection("jdbc:oracle:thin:@Agnit-PC:1521:devdb","system","bababobby");
		PreparedStatement ps=conn.prepareStatement("select customerid from account where accountno=? and customerid=?");
		ps.setString(1,acno);
		ps.setString(2,id);
		ResultSet rs=ps.executeQuery();
		if(rs.next())
		{
			check="true";
			connection();
			
		}
		else
			check="false";
	}

public void connection() throws ClassNotFoundException, SQLException
	{
		Class.forName("oracle.jdbc.driver.OracleDriver");
		Connection conn=DriverManager.getConnection("jdbc:oracle:thin:@Agnit-PC:1521:devdb","system","bababobby");
		PreparedStatement ps=conn.prepareStatement("select accountno,account_type,customerid,amount from account where accountno=? ");
		ps.setString(1,acno);
		ResultSet rs=ps.executeQuery();
		rs.next();
		acno=rs.getString(1);
		actype=rs.getString(2);
		id=rs.getString(3);
		balance=rs.getString(4);
		
		
		Connection conn2=DriverManager.getConnection("jdbc:oracle:thin:@Agnit-PC:1521:devdb","system","bababobby");
		PreparedStatement ps2=conn2.prepareStatement("select customername from customer where customerid=? ");
		ps2.setString(1,id);
		ResultSet rs2=ps2.executeQuery();
		rs2.next();
		username=rs2.getString(1);
		conn2.close();
}
}

I would be grateful if someone could point out my mistake

Please tell me whether the JSP programs are right and whether the values enter the java file because I have separately run the java file in IDE using specific values and it worked just fine

I am now sure that the value is not entering the java program because I am getting Resultset exhausted

getting exhausted result set when using <jsp:setProperty name="details" property="id" value="${sessionScope.user}" />

What does a result set have to do with your session?

I have done it.......thanks to everyone who helped!!! Actually the problem was that the session parameter was not being recognized by the bean form..........so I tried the other way round.............I did not use:

What I did was that pass the session parameter as an argument to the Java file and got the result

The problem why I got the resultSet exhausted was that the Java program was not able to recognize one of the parameters and taking it as null for which I was basically getting: