* Removed unused import statements.
* Moved from 'protected' to 'private' fields.
* Added 'final' to not overridden methods.
* Added 'final' to constant declarations.
* Added private constructor to utility classes.
* Removed 'public' modifier to methods of interfaces.
* Removed local variables returned immediately.
* Added brackets to if, if/else statements.
* Updated 'throw new Error(...)' to use a move adequate exception.
* Used String.indexOf(char) instead of String.indexOf(String).
* Moved from 'USTL' 'University of Lille 1'.
* Various other cosmetic updates.