This tells us that the folder <code>jars/Lib/</code> inside our ImageJ/Fiji directory is the right place to save modules. As <code>Lib/</code> does not exist by default, we have to create it.
When a module is imported for the first time, Jython will compile it to Java code. If there is a module named <code>myModule.py</code>, Jython will create a file called <code>myModule$py.class</code>. The next time the module is imported,
Jython will use the class file instead of the py file. When modifying the module, it necessary to restart ImageJ/Fiji to use the modified one. A work around is the following code (found at [http://stackoverflow.com/questions/10531920/jython-import-or-reload-dynamically stackoverflow]) that will force Jython to recompile all modules :