Coding and a cup of Java Assignment Rev2

import java.util.Scanner;

public class Main {
    static int[] shoppingBasket = {0,0,0,0,0};
    // Add names in order of values of store items
    static final String[] ITEMNAMES = {"Broken Computer", "Cookie", "Unknown Video Game", "Modern Art", "Useless Button"};
    // Add values in order of store items
    static final int[] ITEMCOSTS = {40,3,25,80,10};
    // Have number of shopping choices globally accessible
    static int numOfOptions = shoppingBasket.length;

    static boolean inStore = true;
    static int customerCash = 100;

    public static void main(String[] args) {
        // Loop while we're still in the store
        while (inStore) {
            mainMenu();
            switch(inputHandler(3)) {
                case 1: // I'm going shopping!
                    shopMenu();
                    break;
                case 2: // Whats in the basket?
                    displayBasket(shoppingBasket);
                    break;
                case 3: // Exact change only please...
                    payAndExit();
                    break;
            }
        }
    }

    public static int inputHandler(int n) {
        // Got really sick of putting scanners everywhere.
        Scanner scanner = new Scanner(System.in);
        int choice = scanner.nextInt();
        // Need a way to use this without it range checking.
        if (n == 0) {
            return choice;
        } else {
            while (choice < 1 || choice > n) {
                System.out.println("Option out of range please try again.");
                choice = scanner.nextInt();
            }
        }
        return choice;
    }

    public static void mainMenu() {
        // tl;dr wall o text
        System.out.println("\n\nWelcome Customer: You currently have " + itemsInBasket(shoppingBasket) + " items in your shopping basket.");
        System.out.println("What would you like to do?");
        System.out.println("1. Add an item to the shopping basket");
        System.out.println("2. View the content of the shopping basket");
        System.out.println("3. Pay and exit the shop");
    }

    public static void shopMenu() {
        int input;
        do {
            System.out.println("What would you like to add to your shopping basket?");
            System.out.println("1. Broken Computer $40");
            System.out.println("2. Cookie $30");
            System.out.println("3. Unknown video game $25");
            System.out.println("4. Modern art $80");
            System.out.println("5. Useless button $10");
            System.out.println("6. Go Back");
            // switch case to add items
            input = inputHandler(numOfOptions + 1);
            if (input != numOfOptions + 1) {
                addItem(input - 1);
            }
        } while (input != numOfOptions+ 1);
    }

    public static void displayBasket(int[] basket) {
        int input;
        if (itemsInBasket(shoppingBasket) == 0) {
            System.out.println("Your shopping basket is empty.");
        } else {
            for (int x = 0; x < basket.length; x++) {
                System.out.printf("Quantity of %s:  [%d]%n", ITEMNAMES[x], shoppingBasket[x]);
            }

            do {
                System.out.println("What would you like to do?");
                System.out.println("1. Remove Item");
                System.out.println("2. Go back");
                input = inputHandler(2);
                if (input != 2) {
                        System.out.println("What item would you like to remove?");
                        for (int x = 0; x < basket.length; x++) {
                            System.out.printf((x+1) + ". Quantity of %s:  [%d]%n", ITEMNAMES[x], shoppingBasket[x]);
                        }
                        System.out.println("6. Go Back");
                        // switch case to remove items
                        input = inputHandler(numOfOptions + 1);
                        if (input != numOfOptions + 1) {
                            removeItem(input - 1);
                        }
                }
            } while ( input != 2 && itemsInBasket(shoppingBasket) != 0);
        }
    }

    public static void payAndExit() {
        // everything i needed, time to go
        int total = 0;
        for ( int x = 0; x < shoppingBasket.length; x++) {
            total = total + (shoppingBasket[x] * ITEMCOSTS[x]);
        }
        if (total > customerCash) {
            System.out.println("Sorry, cannot complete transaction: Insufficient funds.");
            System.out.println("Try removing some items and try again.");
        } else {
            System.out.println("Your Total is: " + total);
            System.out.println("Your change is: " + (customerCash - total));
            System.out.println("Have a nice day!");
            inStore = false;
        }
    }

    public static int itemsInBasket(int[] cart){
        // just a quick sum
        int total = 0;
        for (int item : cart) {
            total = total + item;
        }
        return total;
    }

    public static void addItem(int item) {
        // what i want, and how  many
        System.out.println(ITEMNAMES[item] + " costs " + ITEMCOSTS[item] + ". How many would you like?");

        /*shoppingBasket[item] = shoppingBasket[item] + inputHandler(0);
        removed for lack of error checking - error checking below
         */

        int requestedQuantity = inputHandler(0);
        while (requestedQuantity < 0) {
            System.out.println("Negative quantities are not allowed. Please enter a positive quantity.");
            requestedQuantity = inputHandler(0);
        }
        shoppingBasket[item] = shoppingBasket[item] + requestedQuantity;
    }

    public static void removeItem(int item) {
        // take out this many
        System.out.println("Remove how many?");
        /* shoppingBasket[item] = shoppingBasket[item] - inputHandler(0);
        removed for lack of error checking - error checking below
         */
        int removalQuantity = inputHandler(0);
        while (removalQuantity < 0 || removalQuantity > shoppingBasket[item]) {
            if (removalQuantity < 0) {
                System.out.println("Negative quantities are not allowed. Please enter a positive quantity.");
            }
            if (removalQuantity > shoppingBasket[item]) {
                System.out.println("You can not remove more than " + shoppingBasket[item] + " " + ITEMNAMES[item] + ". Remove how many?");
            }
            removalQuantity = inputHandler(0);
        }
        shoppingBasket[item] = shoppingBasket[item] - removalQuantity;
    }
}