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BIRZEIT UNIVERSITY

Faculty of Engineering and Information Technology

Computer Science Department Comp $2310$ Project

Individual work project. Due Date: Sat. $27/1/2024$ by $10$:$00$ pm on ITC

Given the following UML diagram:

Please do the following:

$1-$ 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.

b$-$ method printPaymentInfo$)$ prints the properties and the calculated payment by calling both the toString$()$ as well as the calculatePayment$()$ methods.

c$-$ class CustomerPayment is Comparable based on the value returned by the method calculatePayment$().$

d$-$ Check class has a variable called type $($int$)$ which is set using one of three constant values that should be defined in the class CASHIFR $=1$ CFRTIFIFD $=?$

itc.

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