Error while passing checkbox value

Question

hi,
i'm passing my checkbox value like this..
first.jsp
<%for (l=0;l < row;++l)
{%>
<tr>
<td><input type="checkbox" name="delete<%=l%>" value="<%=tm.getValueAt(l,0)%>"></td>
<%}%>
second .jsp i call it as
int number=Integer.parseInt(request.getParameter("num"));
System.out.println("in vetcd no"+number);
for(int i=0; i<number; i++)
String equid = request.getParameter("delete"+i);
System.out.println("delete"+i+"equid"+equid);
but it always prints the value of equid to be null
can anybody help

Answer 1

I think maybe the method of your form was wrong.
Anyway, here are two jsp files for your reference.
=======1.jsp==========
<h3>This is 1.jsp</h3>
<form action="2.jsp" method="post">
<table>
<%for(int l=0;l <5;++l)
{%>
<tr><td><input type="checkbox" name="delete<%=l%>" value="<%=l%>">Checkbox <%=l%></td></tr>
<%}%>
</table>
<input type="Submit" value="Submit">
</form>
========2.jsp===========
<h3>This is 2.jsp</h3>
<%
for(int i=0; i<5; i++)
String equid = request.getParameter("delete"+i);
out.write("delete"+i+", equid"+equid+"<br>");
%>
In 1.jsp, if I check on "checkbox2" and "checkbox3"
I can get result in 2.jsp as
This is 2.jsp
delete0, equidnull
delete1, equidnull
delete2, equid2
delete3, equid3
delete4, equidnull
Hope this solve your problem.
Good luck
Harv