can someone please help me solve this error here is my code import import java.util.Scanner;

public class ReceiptMaker $\{$

public static final String SENTINEL $=$ "checkout";

public final int MAX$\_$NUM$\_$ITEMS;

public final int TAX$\_$RATE;

private String itemNames;

private double $[]$ itemPrices;

private int numItemsPurchased;

public ReceiptMaker$()\{$

MAX$\_$NUM$\_$ITEMS $=10$;

TAX$\_$RATE $=\mathrm{.}0875$;

itemNames $=$ new String$[$MAX$\_$NUM$\_$ITEMS$]$;

itemPrices $=$ new double$[$MIN$\_$NUM$\_$ITEMS$]$;

numItemsPurchased $=0$;

$\}$

public ReceiptMaker$($int maxNumItems, double taxRate$)\{$

if$($isValid$($maxNumItems$))\{$

MAX$\_$NUM$\_$ITEMS $=$ maxNumItems;

$\}$

else$\{$

MAX$\_$NUM$\_$ITEMS$=10$;

$\}$

if$($isValid$($taxRate$))\{$

TAX$\_$RATE $=$ taxRate;

$\}$

else$\{$

TAX$\_$RATE $=\mathrm{.}0875$;

$\}$

itemNames $=$ new String$[$MAX$\_$NUM$\_$ITEMS$]$;

itemPrices $=$ new double$[$MAX$\_$NUM$\_$ITEMS$]$;

numItemsPurchased $=0$;

$\}$

public void greetUser$()\{$

System.out.println$("$Welcome to the $"+$MAX$\_$NUM$\_$ITEMS$+"$ items or less checkout line"$)$;

$\}$

public void promptUserForProductEntry$()\{$

System.out.println$("$Enter item #$"+($numItemsPurchased$+1)+"\text{'}$s name and price separated by a space, or enter $""+$SENTINEL$+"\backslash "$ to end transaction early"$)$;

$\}$

public void addNextPurchaseItemFromUser$($String itemName, double itemPrice$)\{$

itemNames$[$numItemsPurchased$]=$ itemName;

itemPrices$[$numItemsPurchased$]=$ itemPrice;

numItemsPurchased$++$;

$\}$

public double getSubtotal$()\{$

double subTotal $=0$;

for$($int i$=0$; i maxPrice$)\{$

maxPrice $=$ itemPrices$[$i$]$;

$\}$

$\}$

return maxPrice;

$\}$

public int getIndexOfMaxPrice$()\{$

int indexOfMax $=0$;

for$($int i$=1$; i itemPrices$[$indexOfMax$])\{$

indexOfMax $=$ numItemsPurchased;

$\}$

$\}$

return indexOfMax;

$\}$

public double getMeanPrice$()\{$

return getSubtotal$()/$numItemsPurchased;

$\}$

public double getTaxOnSubtotal$()\{$

return getSubtotal$()*$ TAX$\_$RATE;

$\}$

public double getTotal$()\{$

return getSubtotal$()+$ getTaxOnSubtotal$()$;

$\}$

public void displayReceipt$()\{$

System.out.println$("-------------------------------------------------")$;

System.out.printf$("$Subtotal: $ $\%04\mathrm{.}2$f $|$ # of Items $\%02$d

$",$ getSubtotal$(),$numItemsPurchased$)$;

System.out.printf$("$ Tax: $ $\%05\mathrm{.}2$f

$",$getTaxOnSubtotal$())$;

System.out.printf$("$ Total: $ $\%04\mathrm{.}2$f

$",$ getTotal$())$;

System.out.println$("--------------------$THANK YOU$--------------------")$;

$\}$

public void displayReceiptStats$()\{$

System.out.println$("$

$-----------------$RECEIPT STATS$-----------------")$;

System.out.printf$("$Min Item Name: $\%12$s $|$ Price: $ $\%04\mathrm{.}2$f

$"+$ itemNames$[$getIndexOfMinPrice$()],$ getMinPrice$())$;

System.out.print$("$Max Item Name: $\%12$s $|$ Price: $ $\%04\mathrm{.}2$f

$",$ itemNames$[$getIndexOfMaxPrice$()],$ getMaxPrice$())$;

System.out.printf$("$Mean price of $\%02$d items purchased: $ $\%04\mathrm{.}2$f

$",$ numItemsPurchased, getMeanPrice$())$;

$\}$

public void displayAllItemsWithPrices$()\{$

System.out.println$("$

$---------------$RECEIPT BREAKDOWN$---------------")$;

for$($int i$=0$; i$=0)$;

$\}$

private boolean isValid$($double a$)\{$

return $($a $>=0)$;

$\}$

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

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

ReceiptMaker rm $=$ new ReceiptMaker$()$;

rm$.$greetUser$()$;

rm$.$scanCartItems$($scanner$)$;

rm$.$displayReceipt$()$;

rm$.$displayReceiptStats$()$;

rm$.$displayAllItemsWithPrices$()$;

scanner.close$()$;

$\}$

$\}$