It all depends on the features of the application. Chances are if you want it converted though - you'll need to rewrite.
There are any news on the topic?
Is Flex Js alive for example?
Thanks in advance
FlexJS is still being worked on. Nothing has changed in that regard.
I am not sure about we can convert it or not but yes I can differentiate it on the basis:
Flex is session full client, it keeps information of the state of the client.
the client simply sends and receives data only, and does not ever "refresh" the browser.
Whereas the browser-based application(uses jsps) client is "stateless". That is, between page
calls, the browser does not retain any information about the user's interaction
with the server.
So I am not sure.