Radio problems?

TomBarns · Apr 17, 2001

Hi
I'm trying to have two radios on my jsp page,for example i have radio1 and radio2,i need when i check radio1 to pop up a jsp page
that displays radio1 is on,the same when i check radio2 in need to pop up a jsp page that displays radio2 is on.
I'm trying that and i'm getting internal servlet error(java.lang.nullpointerException),iknow that i'm working on reference without initializing it.
How can i make it work?
thanks for your time.
Here is my source code:
//====================
<html>
<form action="radioResponse.jsp">
<body bgcolor="#996600">

radio1 <input type="radio" name="radio1" ><br>
radio2 <input type="radio" name="radio2" ><br>

<input type="submit" >
</form>
</body>
</html>
//===========================
//==========================
<%if(request.getParameter("radio1&quot

.equals("on&quot

){ %>
radio1 is on
<%}else{%>
radio1 is of
<%}%>

<%if(request.getParameter("radio2&quot

.equals("on&quot

){ %>
radio2 is on
<%}else{%>
radio2 is off
<%}%>
//============================

cwinans · Apr 17, 2001

[tt]

Code:

<%
  String radio1 = request.getParameter(&quot;radio1&quot;);
  String radio2 = request.getParameter(&quot;radio2&quot;);

  // if both params are nothing do nothing
  if(!(radio1.equals(&quot;&quot;) && radio2.equals(&quot;&quot;))) {
    if(radio1.equals(&quot;&quot;) // radio 1 was not selected
      out.println(&quot;Radio 2 is on&quot;);
    else // radio 2 was not selected
      out.println(&quot;Radio 1 is on&quot;);
  }
  else {/* do nothing */}
%>

[/tt] I hope this helped! ;-)
- Casey Winans

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Radio problems?

TomBarns

Programmer

cwinans

Programmer

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