SodaDispenser.java

package practice;
//add class definitions below this line

class SodaMachine {

    private String[] sodas = {"coke", "pepsi", "sprite", "dr. pepper"};
    private int cokeInventory;
    private int pepsiInventory;
    private int spriteInventory;
    private int drPepperInventory;
    private int money;
    private final int COST = 2;

    public String[] getSodas() {
        return sodas;
    }

    public int getCokeInventory() {
        return cokeInventory;
    }

    public int getPepsiInventory() {
        return pepsiInventory;
    }

    public int getSpriteInventory() {
        return spriteInventory;
    }

    public int getDrPepperInventory() {
        return drPepperInventory;
    }

    public int getMoney() {
        return money;
    }

    public int getCOST() {
        return COST;
    }

    public void setSodas(int index, String soda) {
        this.sodas[index] = soda;
    }

    public void setCokeInventory(int cokeInventory) {
        this.cokeInventory = cokeInventory;
    }

    public void setPepsiInventory(int pepsiInventory) {
        this.pepsiInventory = pepsiInventory;
    }

    public void setSpriteInventory(int spriteInventory) {
        this.spriteInventory = spriteInventory;
    }

    public void setDrPepperInventory(int drPepperInventory) {
        this.drPepperInventory = drPepperInventory;
    }

    public void setMoney(int money) {
        this.money = money;
    }

    public void buySoda(String order, int price) {
        boolean available = false;
        int index = 0;
        for (String soda : sodas) {

            if (soda == order) {
                available = true;
                break;
            } else {
                index++;
            }
        }
        if (available == false) {
            System.out.println("That soda is not sold in this machine.");
        } else if (price < getCOST()) {
            System.out.println("You did not insert enough money.");
        } else {
            switch (index) {
                case 0:
                    if ((getCokeInventory() - 1) < 0) {
                        System.out.println("There are no cans of " + capitalize(order) + ".");
                        break;
                    }
                    setCokeInventory(getCokeInventory() - 1);
                    setMoney(getMoney() + COST);
                    break;
                case 1:
                    if ((getPepsiInventory() - 1) < 0) {
                        System.out.println("There are no cans of " + capitalize(order) + ".");
                        break;
                    }
                    setPepsiInventory(getPepsiInventory() - 1);
                    setMoney(getMoney() + COST);
                    break;
                case 2:
                    if ((getSpriteInventory() - 1) < 0) {
                        System.out.println("There are no cans of " + capitalize(order) + ".");
                        break;
                    }
                    setSpriteInventory(getSpriteInventory() - 1);
                    setMoney(getMoney() + COST);
                    break;
                case 3:
                    if ((getDrPepperInventory() - 1) < 0) {
                        System.out.println("There are no cans of " + capitalize(order) + ".");
                        break;
                    }
                    setDrPepperInventory(getDrPepperInventory() - 1);
                    setMoney(getMoney() + COST);
                    break;
            }
        }
    }

    public String capitalize(String str) {
        if (str == "" || str == null) {
            return str;
        } else {
            return str.substring(0, 1).toUpperCase() + str.substring(1);
        }
    }

    public SodaMachine() {

        this.sodas = new String[]{"coke", "pepsi", "sprite", "dr. pepper"};
        this.cokeInventory = 20;
        this.pepsiInventory = 20;
        this.spriteInventory = 20;
        this.drPepperInventory = 20;
        this.money = 10;
    }

}

//add class definitions above this line
public class SodaDispenser {

    public static void main(String[] args) {

        SodaMachine myMachine = new SodaMachine();
        myMachine.setDrPepperInventory(0);
        myMachine.buySoda("dr. pepper", 2);
        System.out.println(myMachine.getMoney());
        System.out.println(myMachine.getDrPepperInventory());

    }
}