public final String getDisplay() {
        String data;
        data = "Welcome to Kohl's. Expect Great Things \n";
        data += "------------------------------------------- \n";
        data += "Customer Name: " + customer.getCustName() + "\n";
        data += "Date of Purchase: " + formattedDate + "\n";
        data += "------------------------------------------- \n";
        for (int i = 0; i < lineItems.length; i++) {
            data += "Item Name: " + lineItems[i].getDescription() + "\n";
            data += "Item Number: " + lineItems[i].getProduct() + "\n";
            data += "Quantity: " + lineItems[i].getQty() + "\n";
            data += "Product Price: " + lineItems[i].getProductAmount() + "\n";
            data += "Discount Amount: " + lineItems[i].getDiscount() + "\n";
            data += "--------------------------------------- \n";
        }
        data += "Total Before Discount: " + getTotalBeforeDiscount() + "\n";
        data += "Money Saved With Discount: " + getTotalAfterDiscount() + "\n";
        double totalBill = getTotalBeforeDiscount() - getTotalAfterDiscount();
        data += "Total Bill: " + totalBill;
        return data;
    }