Retrieve and display image from PostgreSQL database using Servlet and JSP

Question

I want to upload an Image and then display it on JSP.

Here's my servlet

    public class UploadServlet extends HttpServlet {
        protected void doPost(HttpServletRequest request,
                HttpServletResponse response) throws ServletException, IOException {
            // gets values of text fields
            String firstName = request.getParameter("firstName");
            String lastName = request.getParameter("lastName");
            InputStream inputStream = null; // input stream of the upload file
            Part filePart = request.getPart("photo");
            if (filePart != null) {
                inputStream = filePart.getInputStream();
            }

            Connection conn = null; // connection to the database
            String message = null; // message will be sent back to client

            try {
                // connects to the database
                Class.forName("org.postgresql.Driver");
                conn = DriverManager.getConnection(
                        "jdbc:postgresql://localhost:5432/postgres?currentSchema=test", "postgres",
                        "password");
                System.out.println(conn);

                String sql = "INSERT INTO personal_data (first_name, last_name, photo) values (?, ?, bytea(?))";
                PreparedStatement statement = conn.prepareStatement(sql);
                statement.setString(1, firstName);
                statement.setString(2, lastName);

                if (inputStream != null) {
                    // fetches input stream of the upload file for the blob column
                    statement.setBinaryStream(3, inputStream);
                }

                int row = statement.executeUpdate();
                if (row > 0) {
                    message = "File uploaded and saved into database";
                }

            } catch (Exception ex) {
                message = "ERROR: " + ex.getMessage();
                ex.printStackTrace();
            } finally {
                if (conn != null) {
                    // closes the database connection
                    try {
                        conn.close();
                    } catch (SQLException ex) {
                        ex.printStackTrace();
                    }
                }
                request.setAttribute("Message", message);
                request.getRequestDispatcher("/Message.jsp").forward(request, response);
            }
        }
    }

My data gets stored successfully into the database, I need some reference or code for retrieval of bytea image and displaying it on Message.jsp

If you could help, please suggest some reference or provide some piece of code.

Thanks in advance.