JSTL Foreach Not Outputing Data

Question

I'm new to Java and have been trying to output data from a database to a JSP using JSTL foreach.

I have been following the main response to this question: Show JDBC ResultSet in HTML in JSP page using MVC and DAO pattern. Although this hasn't proved successful for me as my code doesn't output the data.

I am using VSCode, Maven, JDK and Servlet 2.3

offered.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

///

<c:forEach items="${listings}" var="listing">
    <div class="l_tile">
        <div class="text">
            <div class="title">
                <c:out value="${listing.type}" /> -
                <c:out value="${listing.category}" />
            </div>
            <div class="title">
                <c:out value="${listing.title}" />
                <c:out value="${listing.condition}" />
            </div>
            <br>
            <div class="title">
                <c:out value="${listing.description}" />
            </div>
        </div>
        <div class="sector">
            <button class="view" id="myBtn">View</button>
        </div>
    </div>
</c:forEach>

view_listings_servlet.java

@WebServlet("/view_listings_servlet")
public class view_listings_servlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private String url = "jdbc:sqlserver://localhost:1433;databaseName=CommunityRecycle;user=CommunityRecycleAdmin;password=59^7K1Nht#x3";
    private ListingDAO listingDAO;

    @Override
    public void init() {
        listingDAO = new ListingDAO(url);
    }

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {

        try {
            List<Listing> listings = listingDAO.list();
            System.out.println(listings);
            request.setAttribute("listings", listings); // Will be available as ${listings} in JSP
            request.getRequestDispatcher("offered.jsp").forward(request, response);

        } catch (Exception e) {
            System.out.println();
            e.printStackTrace();
        }
    }
}

ListingsDAO.java

public class ListingDAO {

    private String url;

    public ListingDAO(String url) {
        this.url = url;
    }

    public List<Listing> list() throws SQLException {
        List<Listing> listings = new ArrayList<Listing>();

        try (Connection connection = DriverManager.getConnection(url)) {
            CallableStatement viewListings_SP = connection.prepareCall("{call viewListings_SP(?)}");
            viewListings_SP.setInt("type", 2);
            ResultSet rs = viewListings_SP.executeQuery();

            while (rs.next()) {
                Listing listing = new Listing();
                listing.setType(rs.getString(1));
                listing.setTitle(rs.getString(2));
                listing.setCategory(rs.getString(3));
                listing.setDescription(rs.getString(4));
                listing.setCondition(rs.getString(5));
                listing.setState(rs.getString(6));
                listings.add(listing);
            }
        }

        return listings;
    }
}

Listing.java

public class Listing {

    private String type;
    private String title;
    private String category;
    private String description;
    private String condition;
    private String state;

    public String getType() {
        return type;
    }

    public String getTitle() {
        return title;
    }

    public String getCategory() {
        return category;
    }

    public String getDescription() {
        return description;
    }

    public String getCondition() {
        return condition;
    }

    public String getState() {
        return state;
    }

    public void setType(String type) {
        this.type = type;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public void setCategory(String category) {
        this.category = category;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public void setCondition(String condition) {
        this.condition = condition;
    }

    public void setState(String state) {
        this.state = state;
    }
}

Output of System.out.println(listings);

[Listing@15a1b7a4, Listing@7b2d8d89, Listing@529e2fd0]

The code outputs "${listing.type}", "${listing.category}" etc. instead of the actual data.

Any help with this will be greatly appreciated.