A method that returns a special error code is usually better accomplished throwing an exce...

A method that returns a special error code is usually better accomplished throwing an exception instead. The following class maintains an account balance.

class Account{private double balance;public Account(){balance = 0;}public Account(double initialDeposit){balance = initialDeposit;}public double getBalance(){return balance;}//returns new balance or −1 if errorpublic double deposit(double amount){if (amount > 0)balance += amount;elsereturn −1;//Code indicating errorreturn balance;}//returns new balance or −1 if invalid amountpublic double withdraw(double amount){if ((amount > balance) || (amount<0))return −1;elsebalance -= amount;return balance;}}

Rewrite the class so that it throws appropriate exceptions instead of returning −1 as an error code. Write test code that attempts to withdraw and deposit invalid amounts and catches the exceptions that are thrown.