enum.hasMoreElements()

[Parameswaran Thangavel]

hi all
enum.hasMoreElements() returns false when the calling Html page has only one radio button element and user doesn't chose any value.

for eg:

Credit Card:<BR>
  <INPUT TYPE="RADIO" NAME="cardType"
VALUE="Visa">Visa<BR>
  <INPUT TYPE="RADIO" NAME="cardType"
VALUE="Master Card">Master Card<BR>
  <INPUT TYPE="RADIO" NAME="cardType"
VALUE="Amex">American Express<BR>
  <INPUT TYPE="RADIO" NAME="cardType"
VALUE="Discover">Discover<BR>
  <INPUT TYPE="RADIO" NAME="cardType"
VALUE="Java SmartCard">Java SmartCard<BR>

for the above snippet the hasMoreElements() return false.

why and how to overcome this problem
[ September 20, 2005: Message edited by: Parameswaran Thangavel ]

[Pradeep bhatt]

Isn't request.getParameter("cardtype") the way to get the value ?

[Satish Chilukuri]

I believe that is how radio buttons work. Unless you select one, the browser won't send the request parameter.

[Parameswaran Thangavel]

hi chilkuri
can i say, we can't Come to know whether the user has selected the radio button or not by using the Request.getParameterNames();
is there any way to identify whether the user has selected or not by using the getParameterNames() in the servlet.

[Pradeep bhatt]

Originally posted by Parameswaran Thangavel:
hi chilkuri
can i say, we can't Come to know whether the user has selected the radio button or not by using the Request.getParameterNames();
is there any way to identify whether the user has selected or not by using the getParameterNames() in the servlet.

You could use one more hidden field indicating whether the radio button was selected or not.