Add a custom wrapper for the Executor.
Factory for executors.

Just to give a proper name to the variables.
Random giver.
Remove whiteline.
Set a Random running time.
CleanUp.
Util package.
Fix JRE settings.
Meh.... stuff.
Double version, RUNNABLE, FUTURE.
Variables.
Add notification when reject a worker.
Change configuration.
Callable worker.
Add Guava libraries.
Target DIR.