How to link one individual object selected from a collection of objects to a jsp page?

First, this is some code snippet from my ControllerServlet (if you need to see more, no problem, just ask):

package controller;


import cart.ShoppingCart;
import wishlist.Wishlist;
import entity.Category;
import entity.Product;
import java.io.IOException;
import java.util.Collection;
import javax.ejb.EJB;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import session.CategoryFacade;
import session.ProductFacade;

public class ControllerServlet extends HttpServlet {


    @EJB
    private CategoryFacade categoryFacade;
    @EJB
    private ProductFacade productFacade;

 @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {

        String userPath = request.getServletPath();
        HttpSession session = request.getSession();
        Category selectedCategory;
        Product selectedProduct;
        Collection<Product> categoryProducts;



      // if category page is requested
            if (userPath.equals("/category")) {

                // get categoryId from request
                String categoryId = request.getQueryString();

                if (categoryId != null) {

                    // get selected category
                    selectedCategory = categoryFacade.find(Short.parseShort(categoryId));

                    // place selected category in session scope
                    session.setAttribute("selectedCategory", selectedCategory);

                    // get all products for selected category
                    categoryProducts = selectedCategory.getProductCollection();

                    // place category products in session scope
                    session.setAttribute("categoryProducts", categoryProducts);
                }


            // if product page is requested
            if (userPath.equals("/product")) {

                // get productId from request
                String productId = request.getQueryString();

                 if (productId != null) {

                // get selected product
                selectedProduct = productFacade.find(Short.parseShort(productId));

// place selected product in session scope
                session.setAttribute("selectedProduct", selectedProduct);
            }}

Alright on to the issue.

I'm trying to link a product to its own jsp page from the category it comes from. In other words, create a product page for a given product coming from its given category. So far, the linkage works fine but there are three main scenarios i'm facing when calling different codes:

1-The blank scenario: Whenever I use <c:forEach var="product" items="${selectedProduct}" varStatus="iter"></c:forEach>, the product page returns blank where the data for the selected product is supposed to be, like this:

2-The multiplication scenario with all the details: Whenever I use <c:forEach var="product" items="${categoryProducts}" varStatus="iter"></c:forEach>, the product page seems to think that it needs to display all the products from the given category as if it was a category page like this:

3-The multiplication scenario with no details: Whenever I use <c:forEach var="product" items="${categoryProducts}" varStatus="iter"></c:forEach>, and call the statements in the table like this:

- ${selectedProduct.name}
- ${selectedProduct.price}
- ${selectedProduct.description}

instead of:

- ${product.name}
- ${product.price}
- ${product.description}

The product page returns like this:

This is the product.jsp (if you need to see the other jsps like category.jsp, no problem):

<table style="text-align: left; width: 100%; height: 172px;" border="0"
cellpadding="0" cellspacing="0">

     <c:forEach var="product" items="${selectedProduct}" varStatus="iter">

<tbody>
<tr>
<td colspan="1" rowspan="6" style="vertical-align: top;">product_gallery<br>
</td>
<td colspan="1" rowspan="6" style="vertical-align: top;"><img class="img" src="${initParam.productBigImagePath}${product.name}.jpg"><br>
</td>
<td style="vertical-align: top;">${product.name}<br>
</td>
<td style="vertical-align: top;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top;">$ ${product.price}</td>
<td style="vertical-align: top;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
</tr>
<tr>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>
</tr>
<tr>
<td colspan="2" rowspan="1" style="vertical-align: top;">${product.description}</td>
</tr>
<tr>
<td style="vertical-align: top;"><form action="addToWishlist" method="post"><br><br> <input
name="productId" value="${product.id}" type="hidden"> 

    <input class="submit" value="<fmt:message key='AddToWishlist'/>" type="submit"> </form><br>
</td>
<td style="vertical-align: top;"><form action="addToCart" method="post"><br><br> 

    <input name="productId"
value="${product.id}" type="hidden"> <input class="submit" value="<fmt:message key='AddToCart'/>"
type="submit"> 


</form></td>
</tr>
<tr>
<td style="vertical-align: top;"><br>
</td>
<td style="vertical-align: top;"><br>
</td>

<td colspan="2" rowspan="1" style="vertical-align: top;"><ul><li style="background-color: rgb(198, 255, 201); width:100%; text-align:center; border-radius:2em;"><a href="${value}"><fmt:message key='ContinueShopping'/></a></li>
                            </ul><br>
</td>
</tr>
</tbody>
     </c:forEach>
</table>

I have been trying several code combinations so far with no success... All I want is to display one product per product page... I'm going a bit crazy over all this so any help is welcome! :)

---

EDIT BASED ON REQUEST

Product.java:

package entity;

import java.io.Serializable;
import java.math.BigDecimal;
import java.util.Collection;
import java.util.Date;
import javax.persistence.Basic;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.Lob;
import javax.persistence.ManyToMany;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;

/**
 *
 * @author PC
 */
@Entity
@Table(name = "product")
@XmlRootElement
@NamedQueries({
    @NamedQuery(name = "Product.findAll", query = "SELECT p FROM Product p"),
    @NamedQuery(name = "Product.findById", query = "SELECT p FROM Product p WHERE p.id = :id"),
    @NamedQuery(name = "Product.findByName", query = "SELECT p FROM Product p WHERE p.name = :name"),
    @NamedQuery(name = "Product.findByPrice", query = "SELECT p FROM Product p WHERE p.price = :price"),
    @NamedQuery(name = "Product.findByDescription", query = "SELECT p FROM Product p WHERE p.description = :description"),
    @NamedQuery(name = "Product.findByLastUpdate", query = "SELECT p FROM Product p WHERE p.lastUpdate = :lastUpdate")})
public class Product implements Serializable {
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 45)
    @Column(name = "price")
    private BigDecimal price;
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @Column(name = "id")
    private Integer id;
    @Basic(optional = false)
    @NotNull
    @Lob
    @Size(min = 1, max = 16777215)
    @Column(name = "name")
    private String name;
    @Lob
    @Size(max = 2147483647)
    @Column(name = "description")
    private String description;
    @Basic(optional = false)
    @NotNull
    @Column(name = "last_update")
    @Temporal(TemporalType.TIMESTAMP)
    private Date lastUpdate;
    @JoinColumn(name = "category_id", referencedColumnName = "id")
    @ManyToMany(mappedBy = "productCollection")
    private Collection<Category> categoryCollection;
    @OneToMany(cascade = CascadeType.ALL, mappedBy = "product")
    private Collection<OrderedProduct> orderedProductCollection;


    /**
     *
     */
    public Product() {
    }

    /**
     *
     * @param id
     */
    public Product(Integer id) {
        this.id = id;
    }

    /**
     *
     * @param id
     * @param name
     * @param price
     * @param lastUpdate
     */
    public Product(Integer id, String name, BigDecimal price, Date lastUpdate) {
        this.id = id;
        this.name = name;
        this.price = price;
        this.lastUpdate = lastUpdate;
    }

    /**
     *
     * @return
     */
    public Integer getId() {
        return id;
    }

    /**
     *
     * @param id
     */
    public void setId(Integer id) {
        this.id = id;
    }

    /**
     *
     * @return
     */
    public String getName() {
        return name;
    }


    /**
     *
     * @param name
     */
    public void setName(String name) {
        this.name = name;
    }


    /**
     *
     * @return
     */
    public String getDescription() {
        return description;
    }

    /**
     *
     * @param description
     */
    public void setDescription(String description) {
        this.description = description;
    }

    /**
     *
     * @return
     */
    public Date getLastUpdate() {
        return lastUpdate;
    }

    /**
     *
     * @param lastUpdate
     */
    public void setLastUpdate(Date lastUpdate) {
        this.lastUpdate = lastUpdate;
    }

    /**
     *
     * @return
     */
    @XmlTransient
    public Collection<Category> getCategoryCollection() {
        return categoryCollection;
    }

    /**
     *
     * @param categoryCollection
     */
    public void setCategoryCollection(Collection<Category> categoryCollection) {
        this.categoryCollection = categoryCollection;
    }

    /**
     *
     * @return
     */
    @XmlTransient
    public Collection<OrderedProduct> getOrderedProductCollection() {
        return orderedProductCollection;
    }

    /**
     *
     * @param orderedProductCollection
     */
    public void setOrderedProductCollection(Collection<OrderedProduct> orderedProductCollection) {
        this.orderedProductCollection = orderedProductCollection;
    }

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof Product)) {
            return false;
        }
        Product other = (Product) object;
        return !((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id)));
    }

    @Override
    public String toString() {
        return "entity.Product[ id=" + id + " ]";
    }

    public BigDecimal getPrice() {
        return price;
    }

    public void setPrice(BigDecimal price) {
        this.price = price;
    }
}