问否则没有If JAVA错误！括号和分号全部按顺序

EN

Model model = ModelFactory.getModel();

if(request.getParameter("choice").equalsIgnoreCase("1"))
{
  List<Patient> searchResult = model.searchFor(request.getParameter("searchstring"));
  request.setAttribute("result", searchResult);
}

System.out.println("PROBLEM HERE");

else if(request.getParameter("choice").equalsIgnoreCase("2"))
{
  List<Patient> searchResult = model.searchGender(request.getParameter("gender"));
  request.setAttribute("result", searchResult);
}

else if(request.getParameter("searchlast") != null  && request.getParameter("choice").equalsIgnoreCase("3"))
{
    List<Patient> searchResult = model.searchLast(request.getParameter("searchlast"));
    request.setAttribute("result", searchResult);
}

else if(request.getParameter("choice").equalsIgnoreCase("4"))
{
  List<Patient> searchResult = model.advancedSearch(request.getParameter("gender"),request.getParameter("searchRace"),request.getParameter("searchEthnic"));
  request.setAttribute("result", searchResult);
}

else if(request.getParameter("choice").equalsIgnoreCase("5"))
{
  List<Patient> searchResult = model.searchAge(request.getParameter("age"));
  request.setAttribute("result", searchResult);
}

// Invoke the JSP page.
ServletContext context = getServletContext();
RequestDispatcher dispatch = context.getRequestDispatcher("/searchResult.jsp");
dispatch.forward(request,response);