Items Prices and Arrays with functions using globa variables

public class ItemNamesPrices3 {
    public static String[] itemNames = {"DHT11", "DHT22", "HC711", "Arduino", "LDR"};
    public static double[] itemPrices = {11,22 ,117, 50, 10};

    public static void main(String args[]) {
        printItems();
        printItemsAveragePrice();
        printItemHighestPrice();
        printItemLowestPrice();
    }

    public static void printItems() {
        for (int i = 0; i< itemNames.length; i++) {
            System.out.println(itemNames[i] + " Price is AED: " + itemPrices[i]);
        }
    }

    public static void printItemsAveragePrice() {
        double total = 0;
        for (double price : itemPrices) {
            total = total + price;
        }

        double average = total / itemPrices.length;
        System.out.println("Average Item Price:" + average);
    }

    public static void printItemHighestPrice() {
        int highestPriceIndex = -1;
        double highestPrice = itemPrices[0]; //assume the first price is the highest
        for (int i = 0 ; i < itemPrices.length; i++ ) {
            //for every itemPrices[i]
            if (itemPrices[i] > highestPrice) {
                //replace the highestPrice with the itemPrices[i]
                highestPrice = itemPrices[i];
                //update highestPriceIndex to i
                highestPriceIndex = i;
            }
        }

        //using the highest price index print the itemName and item price
        System.out.println(itemNames[highestPriceIndex] + " AED:"
                                    + itemPrices[highestPriceIndex]);
    }

    public static void printItemLowestPrice() {
        int lowestPriceIndex = 0;
        double lowestPrice = itemPrices[0]; //assume the first price is the lowest
        for (int i = 0 ; i < itemPrices.length; i++ ) {
            //for every itemPrices[i]
            if (itemPrices[i] < lowestPrice) {
                //replace the lowestPrice with the itemPrices[i]
                lowestPrice = itemPrices[i];
                //update lowestPriceIndex to i
                lowestPriceIndex = i;
            }
        }

        //using the lowest price index print the itemName and item price
        System.out.println(itemNames[lowestPriceIndex] + " AED:"
                                    + itemPrices[lowestPriceIndex]);
    }
}