QuestionQuestion

Build a web application that maintains your bank transactions, allowing you to display all transactions sorted by dates, with the corresponding balance. You need a page to enter transactions, and a page to display them. The data needs to be maintained in a relational database of your choice.

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public class display extends HttpServlet {

    /**
    * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
    * methods.
    *
    * @param request servlet request
    * @param response servlet response
    * @throws ServletException if a servlet-specific error occurs
    * @throws IOException if an I/O error occurs
    */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
       response.setContentType("text/html;charset=UTF-8");
       try (PrintWriter out = response.getWriter()) {
            
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet display</title>");            
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Transaction list</h1>");
         
            String connectionURL = "jdbc:derby://localhost:1527/bank";
            Connection conn;
            try {
                conn = DriverManager.getConnection(connectionURL, "root", "1111111");
                              
                String sql = "SELECT * FROM transactions t order by t.date_";...
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