Modify the Code Fragment $1\mathrm{.}7\mathrm{.}1$ CreditCard class to include the following best practices in Java:

$1.$ Each class must be a subclass of something, if it is the superclass of the application, it must be a subclass of Java Object.

$2.$ Every class must be in a separate file.

$3.$ Create an application to test CreditCard class, and name it TestCreditCard or DemoCreditCard

$4.$ Each class must have an override toString$()$ to output the class info as a native Java Object

$5.$ Use this instead of naming parameters different from the class private members.

$6.$ Use ArrayList instead of the standard array for the wallet.

$7.$ Output credit cards with Balance $>200$

$8.$ Use Collection Sort to sort credit cards by Balance in Descending order.

$9.$ The application and its classes must have headers.Code Fragment $1\mathrm{.}7\mathrm{.}1$: The CreditCard class.

public class Creditcard $\{$

private string customer; $//$ name of the customer $($e$.$g$.,$ "John Bowman"$)$

private String bank; $//$ name of the bank $($e$.$g$.,$ "California Savings"$)$

private string account; $//$ account identifier $($e$.$g$.,"5391037593875309")$

private int limit; $//$ credit limit $($measured in dollars$)$

protected double balance; $//$ current balance $($measured in dollars$)$

$//------------$ Constructors $------------$

public CreditCard$($String cust, string bk$,$ string acnt, int lim$,$ double initialBal$)\{$

customer $=$ cust;

bank $=bk$;

account $=$ acnt;

limit $=$ lim;

balance $=$ initialBal;

$\}$

public Creditcard$($String cust, String bk$,$ string acnt, int lim$)\{$

this$($cust$,$ bk$,$ acnt, lim$,0\mathrm{.}0)$; $//$ use a balance of zero as default

$\}$

$//$ Accessor methods $------------$

public String getCustomer$()\{$ return customer; $\}$

public string getBank$()\{$ return bank; $\}$

public String getAccount$()\{$ return account; $\}$

public int getLimit$()\{$ return limit; $\}$

public double getBalance$()\{$ return balance; $\}$

$\text{'}$

Update methods $-----------$

public boolean charge$($double price$)\{//$ make a charge

if $($price $+$ balance $>$ limit$)//$ if charge would surpass limit

return false; $//$ refuse the charge

$//$ at this point, the charge is successful

balance $+=$ price; $//$ update the balance

return true; $//$ announce the good news

$\}$

public void makePayment$($double amount$)\{//$ make a payment

balance $-=$ amount;

$\}$

$//-----$ Utility method to print a card's information $-----$

public static void printSummary$($CreditCard card$)\{$

System.out.println$("$Customer $="+$ card.customer$)$;

System.out.println$("$Bank $="+$ card.bank$)$;

System.out.println$("$Account $="+$ card.account$)$;

System.out.println$("$Balance $="+$ card.balance$)$; $//$ implicit cast

System.out.println$("$Limit $="+$ card.limit$)$; $//$ implicit cast