I am not sure exactly what sub-group this question best fits under...
Is there a "recommended" way of implementing dynamic fields?
It is very easy to map, via xml configuration, fields on a JSP to instance variables (getter/setter methods) in a Java bean. But what if I want "dynamic" fields on my JSP - that is, the user can add a new text field or something, which can be submitted in the form to my controller. How could this dynamic field be mapped to my java bean?