Simple program using calls to functions in loops

coffeeMaker.java

import java.util.Scanner;

class CoffeeMaker {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        int n;

        do {
            System.out.println("What do you want to do?\n1. Drop coffee\n2.Recharge coffee maker\n0. Exit");
            n = sc.nextInt();

            switch (n) {
            case 1:
                CoffeeMaker.dropCoffee(1);
                break;
            case 2:
                CoffeeMaker.rechargeCafe(2);
                break;
            case 0:
                System.out.println("Good bye");
                break;
            }
        } while (n != 0);
    }

    public static void dropCoffee(int n) {
        if (n == 1) {
            System.out.println("Coffee dropped\n");
        }
    }

    public static void rechargeCafe(int n) {

        if (n == 2) {
            System.out.println("Coffee maker recharged\n");
        }
    }
}