public class Main $\{$

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

$//$ Create a checking account instance with initial balance, credit limit$,$ and overdraft fee

CheckingAccount checkingAccount $=$ new CheckingAccount$(10000,5000,2000)$;

$//$ Display initial account info

System.out.println$("$Initial Account Info:

$"+$ checkingAccount.accountInfo$())$;

$//$ Perform debit transaction exceeding balance

checkingAccount.debit$(12000)$; $//$ Exceeding balance by $$2000,$ overdraft fee applied

checkingAccount.applyInterest$()$; $//$ No interest applied

System.out.println$("$Account Info after Debit:

$"+$ checkingAccount.accountInfo$())$;

$//$ Perform credit transaction

checkingAccount.credit$(3000)$; $//$ Adding $$3000$ to balance

checkingAccount.applyInterest$()$; $//$ No interest applied

System.out.println$("$Account Info after Credit:

$"+$ checkingAccount.accountInfo$())$;

$\}$

$\}$