occFunction

    public void removeAllOccurences (Book book) {

        for(int i=0; i<this.numberOfBooks(); i++) {

            if(arrayBook[i].equals(book)) {

                for(int j=i+1; j<this.nbLivre; j++) {
                    arrayBook[j-1]=arrayBook[j];
                }//FIN FOR

                i--;
                this.nbLivre--;
            }//FIN IF
        }//FIN FOR
    }