simple radio button question

DonalN

Hi,

Java code problem - my servlet needs to check if a group radio button (submitted on a HTML form) has been selected or not.

In other words - if the submit is clicked and none of the radio button options has been selected, what is the Java code to check?

Make any sense?

D.

Mutant_Fruit

if(!Button1.IsSelected && !Button2.IsSelected && !Button3.IsSelected)
{
Do Code for when nothing is selected
}

of course, syntax might be different for java, but the idea would be the same.

madramor

Mutant_Fruit wrote:

if(!Button1.IsSelected && !Button2.IsSelected && !Button3.IsSelected)
{
Do Code for when nothing is selected
}

of course, syntax might be different for java, but the idea would be the same.

servlets are serverside components they only interact with
the client using the HTTP protocol so the above will not work

<FORM action="doit">
   <INPUT TYPE="RADIO" NAME="anything" VALUE="1">One</INPUT>
   <INPUT TYPE="RADIO" NAME="anything" VALUE="2">Two</INPUT>
   <INPUT TYPE="RADIO" NAME="anything" VALUE="3">Three</INPUT>
   <INPUT type="submit" value="doit">
</FORM>

String val = request.getParameter("anything");
if(val == null)
   out.println("no buttons ticked");
else
   out.println("Checked was: "+val);
   // will give 1 || 2 || 3