How to display my ResultSet in a JSP??

Question

First off, I'm new to Java programming.
Here's my problem. I have a set of users in my database. I'd like to retrieve all the user ID's (these are integers) from my User-table and display them in a JSP. Now, I realize that my coding below isn't very efficient as it's not exactly a MVC approach. I'm just trying to learn what a ResultSet is and how to manipulate it.
I send my ResultSet to a JSP by "request.setAttribute("usersId", usersId);" but then I'm not sure what to do in my JSP to actually display my User ID's.
My code:
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
String dbURL = "jdbc:mysql://localhost:3306/heading360";
String username = "root";
String password = "";
Connection connection = (Connection) DriverManager.getConnection(
dbURL, username, password);
Statement statement = (Statement) connection.createStatement();
ResultSet userId = (ResultSet) statement.executeQuery("SELECT UserId FROM User");
request.setAttribute("userId", userId);
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/testUserId.jsp");
dispatcher.forward(request, response);
catch (SQLException e) {
for (Throwable t : e)
t.printStackTrace();
}

Answer 1

flukyspore wrote:
OK thanks for the quick response.
I am using using JSP EL to write my JSP's. Still learning JSTL.Bad idea. Learn JSTL.
I understand everything you're saying, except I can't seem to find the exact approach to load my ResultSet into an object or collection. Could you give me an example of how to do that. My ResultSet is one column of User ID's, they are integers. Something like this:
private static final String FIND_USER_ID_SQL = "SELECT USER_ID FROM USERS";
private Connection connection;
public List<Integer> findUserIds()
    List<Integet> userIds = new ArrayList<Integer>();
    Statement stmt = null;
    ResultSet rs = null;
    try
        stmt = connection.createStatement(sql);
        rs = stmt.executeQuery();
        while (rs.next())
            userIds.add(rs.getInt("USER_ID"));
    catch (SQLException e)
        e.printStackTrace();
    finally
        close(rs);
        close(stmt);
    return userIds;
}Fill in the blanks.
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