"Form" - If-else Statements

Question

I'm trying to realize a simple form:

there's a globalname and globalpass, and the User is asked to type in his name and pass.

If name == globalname and pass = globalpass -> "Hello name"
If name == blank or pass == blank -> "O NOEZ, you fergit sumpn!"
If name != globalname or pass != globalpass -> "WHUT? Who be you, intruder?"

So far I only manage to get the first if-working...

<% 
  String name = request.getParameter("name");
  String pass= request.getParameter("pass");
  String globalname = "webeng";
  String globalpass = "2009";
  if (name !=null && pass!=null && name.equals(globalname) && pass.equals(globalpass))
   {
%>
    <jsp:include page="formular-modul1.jsp" />
<% } else
   {
%>
<% }
%>

<%
 else if (name =="b" && pass =="c" && name.equals("b") && pass.equals("c"))
  {
%>
    <jsp:include page="formular-modul2.jsp" />
<%} else
    {
%>
<%
}%>

The name=="b" && pass =="c" was just for test purposes, which failed! Can somebody help me out, please?

Answer 1

Strings are objects, not primitives. When using == to compare objects, it would only return true if both points to the same reference. It doesn't test the object's value. There you already have Object#equals() for.

Apart from this problem, using those old fashioned scriptlets in a JSP file is a sign of a bad practice. In this specific case you'd better use a Servlet class for this. Good luck.

Answer 2

Got it working now.

<% 
  String name = request.getParameter("name");
  String pass = request.getParameter("pass");
  String globalname = "webeng";
  String globalpass = "2009";
  if (name !=null && pass!=null && name.equals(globalname) && pass.equals(globalpass))
   {
   %>
    <hr />
    <p><b>Howdy, <%= request.getParameter("name") %></b></p>
    <hr />
<% }
  else if (name !=null | pass!=null && name.equals("") | pass.equals(""))
  {
  %>
    <hr />
    <p><b>Ooops, one or more fields are empty. Please fill everything out!!</b></p>
    <hr />
<% }
  else if (name !=null | pass!=null && !name.equals(globalname) | !pass.equals(globalpass))
  {
  %>
    <hr />
    <p><b>Incorrect Userdata!</b></p>
    <hr />
<% }
  else{
  }
%>

Now I need to use .toLowercase.

Means name and pass have to be converted into .toLowercases THEN used. Anyone got any idea? Simply using newname = name.toLowercase(); or newpass = pass.toLowercase(); doesn't work!