The Java Vending Machine: VENDING

package vending;

import java.util.Scanner;

public class Vending {

Prodotto []p;

int amount,credit;
int choice ;
int coin ;

    public Vending() {
        amount=0;credit=0;
        choice = 0;
        coin = 0;
        p=new Prodotto[4];
        p[0]=new Prodotto(55,"LION",1);
        p[1]=new Prodotto(65,"COCA",2);
        p[2]=new Prodotto(50,"NOCCIOLINE",3);
        p[3]=new Prodotto(45,"PATATINE",4);
    }

    public void setCredit(int credit) {
        this.credit = credit;
    }

public void stampaMenu() {
           System.out.println("**********************************");
            System.out.println("* Minibar *");
            for(int i=0;i<4;i++)
                System.out.println(p[i]);
            System.out.println("**********************************");

}

public void scelta() {
            Coin coin;
            Scanner scan=new Scanner(System.in);
            System.out.println("Inserisci la tua scelta.");
            choice = scan.nextInt();
            switch(choice)

            {
                case 1:
                case 2:
                case 3:
                case 4:
                    System.out.println("Hai scelto:"+p[choice-1]);
                    amount=p[choice-1].getPrezzo();
                    while (credit<amount)  {

                        System.out.println("Inserisci il valore della moneta, in centesimi");
                        coin = new Coin (scan.nextInt());
                        if (!coin.isValid()) coin=new Coin(0);
                        credit+=coin.getValue();
                    }
                    break;
                default:
                    System.out.println("Devi scegliere un valore tra 1 e 4. Grazie!");
            }


}

public void eroga() {
            System.out.print("\007");
            System.out.println("Ecco la bibita");
            System.out.println("Il tuo resto è: "+(credit-amount));


}

public static void main(String[] args)
    {
        Vending v = new Vending();



        while (true) {
            v.setCredit(0);
            v.stampaMenu();
            v.scelta();
            v.eroga();

        }

    }


}