$1.$Define a BankAccount class

that has

$$ accNum $($int$)$

$$ Balance $($double$)$

$$ A constructor

$$ Four methods

o deposit

o withdraw

o getAccNum

o getBalance

$2.$ Implement a test class

TestBankAccount that

$$ Initialize an BankAccount

instance with initial values:

$$ deposit: $500\mathrm{.}0$

$$ accNum: $1001$

$$ Deposit $30\mathrm{.}50$

$$ Withdraw $50\mathrm{.}0$

$$ Print out the remaining

balance

$45$