Grocery Run

Write a method named calculateCheckout$()$ that takes $4$ double parameters named foodItem$1,$ foodItem$2,$ foodItem$3,$ and taxRate, and returns the total food cost including tax.

This method will add the total cost of the food items, calculate the tax and return a double which represents the total food cost including tax.

The method should do the following:

Add the total of the food costs

Calculate the sales tax

return a double which is the total of the food order including tax.

import java.io$.*$;

import java.util.$*$;

import java.text.$*$;

import java.math.$*$;

import java.util.regex.$*$;

public class GroceryCart $\{$

$//$ Write your static method here

$/*****$ DO NOT CHANGE THE CODE BELOW THIS LINE $*****/$

public static void main$($String$[]$ args$)\{$

Scanner in $=$ new Scanner$($System$.$in$)$;

double foodItemCost$1,$ foodItemCost$2,$ foodItemCost$3,$ taxRate;

foodItemCost$1=$ in$.$nextDouble$()$;

foodItemCost$2=$ in$.$nextDouble$()$;

foodItemCost$3=$ in$.$nextDouble$()$;

taxRate $=$ in$.$nextDouble$()$;

System.out.println$("$Your grocery cart total is: $$"+$ String.format$("\%,\mathrm{.}2$f$",$ calculateCheckout$($foodItemCost$1,$ foodItemCost$2,$ foodItemCost$3,$ taxRate$)))$;

$\}$

$\}$

Expected STDOUT

Your grocery cart total is: $$8\mathrm{.}80$