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From: claude fuhrer <claude@fuhrer.ch>
Subject: tagged code blocks
Date: Fri, 24 Jun 2016 10:21:12 +0200
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To: emacs-orgmode@gnu.org

Hi all

I'm trying to write a document where some source codes block may be 
conditionally excluded from export.

Here a small example of what I want, with the wrong syntax:


===========================================
#+EXCLUDE_TAGS  solution

#+begin_src java :tag question
    public class Test {
     // write java code here

     }
#+end_src


and the solution is:

#+begin_src java :tag solution
      // the solution here
#+end_src
==========================================


So then, I only need to modify the EXCLUDE_TAGS to generate a document 
with or without solution.

Thank you in advance for your help