Step $1$

The basic App class should have

$$ three fields, title, objective $($of the app$)$ and costInPence $($in pence of each

download$)$;

$$ a constructor, which allows you to pass arguments to initialise these three attributes in the

order specified above;

$$ accessor and mutator methods for each field.

Step $2$: adding functionality to the App class.

For this step, you should

$$ write a method download$()$ which allows a user to "download the exercise app". Since this

is only a model, all we do is output appropriate information. Each piece of information must

be printed on a separate line AND in the order given below AND using the exact text shown

below at the start of each line. The values of each appropriate field then follow that text as in

this example.

Title: Step Counter App

Objective: To get fitter

Download cost: $75$

It also updates the value of a new field numberOfDownloads.

$$ add two fields which

o store the name of the player with the highest step count called

highestStepCountName;

o store the step count itself called highestStepCount.

$$ write a method checkStepCount$()$ which, when given a person's step count and name in

that order, checks to see whether that particular step count is the highest step count to date

and if so$,$ replaces the highest step count with this new step count and also replaces the

relevant highest step count name

$$ write a printReport$()$ method which outputs the title, the objective of the app, the cost of

each download, the number of downloads, the highest step count and the name of the person

who has that step count. Each piece of information must be printed on a separate line AND

in the order given below AND using the exact text shown below at the start of each line. The

values of each appropriate field then follow that text as in this example.

Title: Step Counter App

Objective: To get fitter

Download cost: $75$

Number of downloads to date: $4539$

Highest step count to date: $15000$

Player with highest step count: Laura M

Step $3$

So far, testing of the program has been quite repetitive and always starts from scratch. However, we

could introduce a default constructor with the field values hard$-$coded. This means that when we

create our object and then call this default constructor, the field values are automatically inserted

into each field. This will help particularly with your testing. So$,$ introduce a second, default

constructor now.

Then

$$ write a method calculateEarnings$()$ which calculates how much money this particular

app has earnt its writer;

o do not add an extra field to keep track of the running earnings total.

$$ Now amend your printReport$()$ method to include this new information i$.$e$.$ the earnings

to date, on a separate last line exactly in the manner below.

Title: Step Counter App

Objective: To get fitter

Download cost: $75$

Number of downloads to date: $4539$

Highest step count to date: $15000$

Player with highest step count: Laura M

Earnings to date: $87454$

Note that any number printed above should be simply output as a whole number without any

additional symbols or formatting.

Step $4$

Introduce a new class, called Controller, to the project. Its purpose is to represent the controller

of the app. It should have

$$ two fields surname and controllerID $($where the latter is a mix of numbers and letters$)$;

$$ a suitable constructor with parameters for only these two fields in the order specified above

as well as appropriate accessor methods.

Next add a new field appController, of type Controller, to the App class. Modify App$$s

constructor by giving it an additional last parameter so that the new field can be initialised when

the constructor is called.

To test your code

$$ create a Controller object;

$$ create an App object, and pass to its constructor

o values for the three fields $($as usual$)$;

o the identifier for the Controller object e$.$g$.$ controller$1($or$,$ more easily, click

on the Controller object on the Object Bench$)$;

$$ inspect the App object using the Object Inspector. If you double click on the

appController field, a new Object Inspector window will open and you should see the

fields of the Controller object you created $--$ this will confirm that your code for Step $4$ is

working correctly.

Now amend the printReport$()$method of the App class so that it also outputs the surname of the

manager on a separate last line exactly in the manner below

Title: Step Counter App

Objective: To get fitter

Download cost: $75$

Number of downloads to date: $4539$

Highest step count to date: $15000$

Player with highest step count: Laura M

Earnings to date: $87454$

Controller$$s name: Jones