Delete rows from a database

Question

Hi,
I am a beginner in JSP and I have a problem, I hope my English will be good enough to explain it!
I have a web application that displays records in a table from a postgres database. Each row must have a Delete button, so the user can delete the row he wants. How can I do this?
This is an university exam so I can't use neither Javascript nor Structs, but only a little framework written by my teacher to teach us the use of a framework. But before that, I have no idea how can I write these Delete buttons. I suppose I have to use a bean, but how can I set a parameter that says "Please, delete that specific row"?
Thank you!

Answer 1

I would have many problems using numbers as you do, because the primay key of each row is an ID randomly generated... but the real problem is that my teacher doesn't allow any change. He wants buttons so I must use buttons... and he wants that I somehow pass some parameters, use beans... I ask myself if is it possible to do something like this:
<jsp:useBean id="libro" scope="request" class="it.libreria.modello.Libro" />
<form method="post" action="<%=response.encodeURL("cancellaLibro.cmd") %>">
<table>
<%
Collection libri = (Collection)request.getAttribute("libri");
Iterator iter = libri.iterator();
while (iter.hasNext()) {
Libro lib = (Libro)iter.next();
%>
<tr>
<td><%=lib.getCodice() %></td>
<td><%=lib.getTitolo() %></td>
<td><%=lib.getAutore() %></td>
<td><%=lib.getPrezzo() %></td>
<td><%=lib.getN_copie() %></td>
<td><input type="submit" name="Delete" value="<%= what can I put here? %>" /></td>
</tr>
<%
%>
</table>
response.encodeURL("cancellaLibro.cmd") --> the action of the form pass by the framework written by my teacher -- I don't know if in other frameworks it's the same