I have a parent jsp a.jsp which includes another jsp b.jsp. I am calculating some values in b.jsp which needs to be used in parent jsp a.jsp , which will pass this calculated value to another jsp say c.jsp. How can I evaluate value in child jsp and pass it to parent jsp before that page completely loads?
How are you including the "child" jar inside the parent? static or dynamic import?
if you have
<%@ include file="myFile.jsp" %>
change it by
<jsp:include file="myFile.jsp" />
then in the parent set a property in the request (not in the session, that would be "dirtier"):
<% request.setAttribute("attrName", myValue) %>
finally, in the "child" jsp:
<% myValue = (MyValueType)request.getAttribute("attrName") %>