Italian version:
Java offre gia’ un oggetto Stack sul quale operare, ma per scopi puramente didattici, ho creato un oggetto Pila per favorire lo studio degli ADT (Abstract Data Type). Cliccate qui per scaricare la relativa classe.

English version:
Java already offers an object called Stack; it can be used normally but I created an object “Pila” (Stack) for computer science education and an easy studying of Abstract Data Type (ADT). Click here for download it.