CoffeeMachineFinal.java

import java.util.Scanner;

class Coffee{

    private final int water;
    private final int milk;
    private final int beans;
    private final int money;

    public Coffee(int water, int milk, int beans, int money){
        this.water = water;
        this.milk = milk;
        this.beans = beans;
        this.money = money;
    }

    public int getWater(){
        return water;
    }

    public int getMilk(){
        return milk;
    }

    public int getBeans(){
        return beans;
    }

    public int getMoney(){
        return money;
    }

}

class CoffeeMachine{

    private int availableMoney = 550;
    private int availableWater = 400;
    private int availableMilk = 540;
    private int availableBeans = 120;
    private int availableDisposalCups = 9;
    private byte count = 0;
    private static final byte CLEANING_LIMIT = 10;

    private final Coffee espresso = new Coffee(200, 0, 16, 4);
    private final Coffee latte = new Coffee(350, 75, 20, 7);
    private final Coffee cappuccino = new Coffee(200, 100, 12, 6);

    public void start(){
        Scanner sc = new Scanner(System.in);

        while(true){
            System.out.println("Write action (1.buy, 2.fill, 3.take, 4.remaining, 5.clean, 6.exit) : ");
            byte choice = sc.nextByte();

            switch(choice){

                case 1 :{
                            if(count >= CLEANING_LIMIT){
                                System.out.println("I need cleaning!");
                            }
                            else{
                                buy(sc);
                            }
                            break;
                }

                case 2 :{
                            fill(sc);
                            break;
                }

                case 3 : {
                            take();
                            break;
                }
                
                case 4 : {
                            display();
                            break;
                }

                case 5 : {
                            count = 0;
                            System.out.println("I have been cleaned!");
                            break;
                }

                case 6 : {
                            sc.close();
                            System.out.println("Thank you for visiting!");
                            System.out.println("---------------------------------------------------------------------------------------------");
                            return;
                }

                default : System.out.println("Invalid Input!");
            }
        }
    }

    private void buy(Scanner sc){

        System.out.println("What do you want to buy? (1.espresso, 2.latte, 3.cappuccino) :");
        byte type = sc.nextByte();

        switch(type){

            case 1 : {
                        makeCoffee(espresso);
                        break;
            }

            case 2 : {
                        makeCoffee(latte);
                        break;
            }

            case 3 : {
                        makeCoffee(cappuccino);
                        break;
            }

            default : System.out.println("Invalid Input!");
        }
    }

    private void makeCoffee(Coffee coffee){

        if(availableWater < coffee.getWater()){
            System.out.println("Sorry, not enough water!");
            return;
        }

        if(availableMilk < coffee.getMilk()){
            System.out.println("Sorry, not enough milk!");
            return;
        }

        if(availableBeans < coffee.getBeans()){
            System.out.println("Sorry, not enough coffee beans!");
            return;
        }

        if(availableDisposalCups < 1){
            System.out.println("Sorry, not enough cups!");
            return;
        }

        System.out.println("I have enough resources, making you a coffee!");

        availableWater -= coffee.getWater();
        availableMilk -= coffee.getMilk();
        availableBeans -= coffee.getBeans();
        availableMoney += coffee.getMoney();
        availableDisposalCups--;
        count++;

    }

    private void fill(Scanner sc){

        System.out.println("Write how many ml of water you want to add : ");
        availableWater += sc.nextInt();
        System.out.println("Write how many ml of milk you want to add : ");
        availableMilk += sc.nextInt();
        System.out.println("Write how many grams of coffee beans you want to add :");
        availableBeans += sc.nextInt();
        System.out.println("Write how many disposable cups you want to add :");
        availableDisposalCups += sc.nextInt();
        System.out.println("---------------------------------------------------------------------------------------------");
        
    }
    
    private void take(){
        System.out.println("I gave you $" + availableMoney);
        availableMoney = 0;
    }

    private void display(){

        System.out.println("---------------------------------------------------------------------------------------------");
        System.out.println("The coffee machine has:");
        System.out.println(availableWater + " ml of water");
        System.out.println(availableMilk + " ml of milk");
        System.out.println(availableBeans + " g of coffee beans");
        System.out.println(availableDisposalCups + " disposable cups");
        System.out.println("$" + availableMoney + " of money");
        System.out.println("---------------------------------------------------------------------------------------------");
    }
}


public class CoffeeMachineFinal {
    public static void main(String[] args) {
        CoffeeMachine machine = new CoffeeMachine();
        machine.start();
    }
}