Stroring data taken from database as a variable

Hi there I;m having a problem and I was wondering if anyone can help me?
I am trying to extract data from a MySQL database and store the variables so I can use them in another bean...
so far I am getting a SQL exception error but I dont know what Im doing wrong.......
My bean code is :
public int getAge(int age) throws SQLException, Exception{
if(con != null){
try{
String userName = null;
ResultSet rs;
Statement stmt = con.createStatement();
rs = stmt.executeQuery("SELECT (age) FROM gymuser WHERE Username='" userName "'");
age = rs.getInt("age");
return age;
} catch(SQLException sqle){
error = "SQLException: could not search gymuser";
throw new SQLException(error);
catch(Exception e){
error = "An exception occured while searching gymuser";
throw new Exception(error);
} else {
error = "Exception: connection to database was lost";
throw new Exception(error);
The JSP that calls this is :
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@page import="java.sql.*, java.io.*, java.util.*;"%>
<jsp:useBean id="details" scope="session" class="fitness.DBQuery" />
<jsp:useBean id="conn" class="fitness.DBConnect" />
<jsp:useBean id="currentuser" scope="session" class="fitness.currentuserBean" />
--%>
<%--
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
--%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GetDetails</title>
</head>
<body>
<h1>GetDetails</h1>
<%
int age = 0;
String userName = currentuser.getName();
conn.connect();
details.setCon(conn.getCon());
details.getAge(age);
conn.disconnect();
%>
</body>
</html>
Any help you have to offer would be greatly appreciated as Im desperate!! :-)

Thanks for your help, greatly appreciated....
I havent ever had to use DTO's before as this is the first time in my project where I need t use databasa data as variables in other classes.....so I should have a classthat looks like this ??: /*
* GymUser.java
* Created on 26 April 2007, 13:02
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
package fitness;
import java.sql.*;
import java.io.*;
import java.util.*;
import java.util.Date;
import java.io.Serializable;
* @author Hegstatic
public class GymUser implements Serializable{
    /** Creates a new instance of gymUser */
     private String error;
     private String userName;
     private int age; // + getter + setter
    private double weight;
    private String gender;
    public int getAge(){
         return age;
    public void setAge(int i)
         age = i;
    public double getWeight()
        return weight;
    public void setWeight(double d)
        weight = d;
    public String getGender()
        return gender;
    public void setGender(String string)
        gender = string;
    Connection con;
    private String Frankie;
public GymUser getGymUser()
                 if(con != null){
                 try{
                ResultSet rs;
                Statement stmt = con.createStatement();
               rs = stmt.executeQuery("SELECT * FROM gymuser WHERE Username='" +Frankie+ "'");
                List<GymUser> gymUsers = new ArrayList<GymUser>();
                while (rs.next()) {
                    GymUser gymUser = new GymUser();
                    gymUser.setAge(rs.getInt("age"));
                    gymUser.setWeight(rs.getDouble("weight"));
                    gymUser.setGender(rs.getString("gender"));
                    gymUsers.add(gymUser);
    return gymUsers;
                 } catch(SQLException sqle){
               error = "SQLException: could not search gymuser";
                throw new Exception(error, sqle);
               catch(Exception e){
               error = "An exception occured while searching gymuser";
               throw new Exception(error);
                } else {
               error = "Exception: connection to database was lost";
               throw new Exception(error);
    }The IDE is telling me that the value I have for
return gymUsers; is wrong...
Was just wondering if I am going in the right direction and how would I call the variables age, weight, gender in a JSP page??
Again Thank you !!
Hegtic

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