public static List<Picture> displayPicture() {

List<Picture> list = new ArrayList<Picture>();

try {

    Class.forName("com.mysql.jdbc.Driver");

    Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:9999/xxx", "xxx", "xxx");

    String sql = "SELECT * FROM PICTURES";

    PreparedStatement ps = conn.prepareStatement(sql);

    ResultSet rs = ps.executeQuery();

    while (rs.next()) {

         byte[] imageData = rs.getBytes("File_Data");
         String imageFileName = rs.getString("File_Name");

         Picture picture = new Picture();
         picture.setImageData(imageData);
         picture.setImageFileName(imageFileName);
         list.add(picture);
    }

} catch (Exception e) {
    e.printStackTrace();
}
return list;

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
List<Picture> list =null;
list = DBUtils.displayPicture();

request.setAttribute("pictureList", list);

RequestDispatcher dispatcher = request.getServletContext().getRequestDispatcher("/WEB-INF/views/pictureView.jsp");
dispatcher.forward(request, response);

<table>
<c:forEach items="${pictureList}" var="picture">
    <tr>
        <td>${picture.imageData}</td>
    </tr>
</c:forEach>

<img src="">