Table $2\mathrm{.}1$ UML Class Diagram $($Discount$)$

Part $2($Implement an Interface$)$:

For this question, you will create an Item class that will give implementation to the capabilities as specified in the Discount interface you created in Part $1.$

Follow the given UML class diagram $($Table $2\mathrm{.}2)$ and the description table $($Table $2\mathrm{.}3)$ and complete the Item concrete class.

Table $2\mathrm{.}2$ UML Class Diagram $($Item$)$

Table $2\mathrm{.}3$ Class Description $($Item$)$Question $1($Abstract Class$)$:

$//4//$

Preparation:

Create a new NetBeans project called Question$1.$

Add a new Java Class called Switch to the Question$1$ project and complete the class as described in Part $1$ below.

The question:

Create a class called Switch to be abstract as shown in the UML class diagram $($Table $1\mathrm{.}1).$ The class will contain only one abstract method called press$().$ The

method should receive one parameter called the status of type char and should return a boolean data type.

Submitting your answers:

Follow the instructions on EC under section $1$ and submit your answers to this question.

Question $2($Interface$)$:

Preparation:

Create a new NetBeans project called Question$2.$

Add a new Java Interface called Discount to the Question$2$ project and complete the interface as described in Part $1$ below.

Add a new Java Class called Item to the Question $2$ project and complete the class as described in Part $2$ below.

Part $1($Create an Interface$)$:

Create an interface called Discount as shown in the UML class diagram $($Table $2\mathrm{.}1).$ This interface could be used to apply a discount to an object.

The interface will have a data member called DISCOUNT$\_$PERCENTAGE and will have a floating$-$point value of $0\mathrm{.}12$ assigned to it$.$ The interface will also have

an abstract method called applyDiscount$()$ that will allow an object to apply a discount. This method should have a return type of type double.

Make sure that you code all the relevant access modifiers for the data member and the method of this interface.