You are writing an application for a resort that offers several activities to their guests,

each for a fee $($above and beyond what the guest is already paying for their room$).$

For convenience, a guest is allowed to run an activity tab during their stay at the

resort; this means that the cost of each chosen activity is simply added to a running

total, and the guest will pay this total later $($when they check out of the resort$).$

Write a Java class named ActivityTab that can be used to create & work with

ActivityTab objects. For each ActivityTab, we need to keep track of the name of the

guest who is running the tab $($e$.$g$.$ "Holly Smith"$),$ their room number $($e$.$g$.125),$ as well

as the current total amount owing $($which is always $0\mathrm{.}00$ when the tab is first created$).$

In the ActivityTab class, include three instance variables and one constructor. The

constructor should initialize the instance variables.

Provide three simple accessor methods: one to retrieve the guest's name, one to

retrieve their room number, and one to retrieve the current total amount owing.

Provide a mutator method that adds the price of an activity to the guest's activity

tab. The price of the activity is passed in through a parameter. $($Aside: You may

assume that all taxes are already included in the activity price.$)$

Include one more accessor method that will calculate and return a tip amount when

given a percentage. For example, if the guest's current activity tab was $22\mathrm{.}50,$ and

they wanted to leave an $18\%$ tip, the tip amount would be $4\mathrm{.}05.$ This method will

accept the percentage as a parameter $($e$.$g$.0\mathrm{.}18$ for $18\%)$ and return the tip amount.

Part B

Write and test a ComputerScienceRetreat class. This class will serve as a driver

program for Part A and should be saved in the same folder $($directory$)$ as the

ActivityTab class.

In the main method of the ComputerScienceRetreat class, include statements to

support the following:

$$ Annie Easley arrives first. She checks in to room number $73$ and opens an activity

tab. Create an ActivityTab object called anniesTab.

$$ There is a block of free time before the first scheduled meeting at the CS retreat, so

Annie signs up for a half hour of lap swimming for $4\mathrm{.}50.$

$$Alan Turing, who is staying in room $342,$ then opens an activity tab; call this object

variable alansTab.

$$ Alan chooses to take a cooking lesson, which costs $9\mathrm{.}75.$

$$ Clarence Ellis has checked into room $214,$ and she is the next to open an activity

tab; call this object variable clarencesTab.

$$ Clarence signs up for a group hike at a cost of $6\mathrm{.}00,$ followed by a yoga class for

$8\mathrm{.}75.($Use two separate statements, one for each purchase.$)$

$$ Grace Hopper, from room $742,$ also opens an activity tab; call this object variable

gracesTab.

$$ Grace chooses a golf lesson, at a cost of $9\mathrm{.}75.$

$$ Later that evening, Grace and Clarence decide to take in a one$-$act play at the

resort's amphitheatre; the cost of this activity is $11\mathrm{.}25$ per person.

$$ Alan caps off the day by attending a wine tasting, at a cost of $12\mathrm{.}75.$

$$ Annie goes to a book reading in the resort's caf$$; this costs $7\mathrm{.}80.$

Next, for each of the four ActivityTab objects print out the guest's name, room

number, and the amount owing.

Suppose Clarence wishes to leave an $18\%$ tip. Grace, feeling less generous, wishes to

leave a $15\%$ tip. Annie and Alan both opt to leave $20\%$ tips. Make the appropriate

method calls to retrieve the tip amounts for each guest. Print out these tip amounts.

$($Aside: You do NOT need to worry about displaying the tip amounts with exactly $2$

decimal digits.$)$

NOTE: In your driver, be sure to label all of your output so the meanings of the values

are clear. $($i$.$e$.$ Don't just print out numbers without explaining what they represent.$)$