Thankyou everybody.
Mr Bhangale, I finally understood what was happen with my JSP page and its
transformation
into a servlet with just one method called service().
I tried the suggestion of you all and it worked, although i wrote the code like this
(please,
let me know wether it is a good practice or not) :
<%!
String v1, v2...;
function recursive() {
// I use v1, v2 hire
}
%>
<%
v1= session.getAttribute("v1");
v2= session.getAttribute("v2");
...
recursive();
%>
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