$1-$ Create class$/$interface that implements the classes $+$ interface displayed in the UML displayed above exactly as specified $($same variable names, types, $...).$ Make sure to include no$-$arg $+$ all field constructors, setters $+$ getters, as well as toString$()$ methods in each of the classes created. Please note the following:

a$-$ method calculatePayment$()$is implemented differently in each of the concrete classes as follows:

$-$ in class Cash it is calculated as the payment amount entered minus the discountRate percentage $($e$.$g$.$ if amount is $200\mathrm{.}0$ and discountRate is $11\mathrm{.}0$ then payment value is $178\mathrm{.}0)$

$-$ in class Check, payment is the same as the amount entered.

$-$ in class CreditCard, payment is the amount plus the chargingFee.