JSP-Bean-Servlet.zip_java web servlet_java+web+servlet_jdp bean

package BeanServlet; import java.io.IOException; import java.math.BigInteger; import javax.servlet.http.*; import javax.servlet.*; public class JSPServlet extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { BigInteger nr1,nr2, result = null; String operatie; Numar bean = (Numar)request.getAttribute("bean"); nr1 = new BigInteger(bean.getNr1()); nr2 = new BigInteger(bean.getNr2()); operatie = bean.getOperator(); if (operatie.equals("+")) result=nr1.add(nr2); else if (operatie.equals("-")) result=nr1.subtract(nr2); else if (operatie.equals("*")) result=nr1.multiply(nr2); else if (operatie.equals("/")) result=nr1.divide(nr2); if(result != null) bean.setResult(result.toString()); request.setAttribute("bean", bean); getServletContext().getRequestDispatcher("/result.jsp").forward(request, response); } // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> /** * Handles the HTTP <code>GET</code> method. * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * Handles the HTTP <code>POST</code> method. * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * Returns a short description of the servlet. * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }