Homework $5$

Objective: Design the Coffee Hour Project and create Java classes as follows:

Coffee $$ this class represents a single cup of coffee with instance variables and methods.

CoffeeTester $$ this class create two instances of the Coffee class and tests the accessors, mutators and other methods work as intended.

Requirements:

$$ Functionality $(85$ pts$)$

No Syntax, Major Run$$Time$,$ or Major Logic Errors. $(85$ pts$*)$

$*$Code that cannot be compiled due to syntax errors is non$$functional code and will receive no points for this entire section.

$*$Code that cannot be executed or tested due to major run$$time or logic errors is nonfunctional code and will receive no points for this entire section.

Clear and Easy$$To$$Use Interface $(5$ pts$)$

$$Users should easily understand what the program does and how to use it$.$

$$Users should be prompted for input and should be able to enter data easily.

$$Users should be presented with output after major functions, operations, or

calculations.

$$All the above must apply for full credit

Create a class called Coffee with the following

$$ Class Definition and Instance Variables $(5$ pts$)$

$$ Name

$$ A non$$null String that represents the name of the Coffee

$$ Caffeine content in a single cup

$$ Coffee contains around $50$mg to $300$mg of caffeine per cup

CSCE $145$: Algorithmic Design I

$$ A default constructor$$ sets the instance variables to default values as follows: $(5$ pts$)$

$$Default Coffee Name : none

$$Default Caffeine Content: $50$ mg $$ Methods

$$Accessors for all instance variables $(10$ pts$)$

Create accessors for each instance variable

Returns the value of the current instance

$$Mutators for all instance variables $(15$ pts$)$

Create mutators for each instance variable

The mutator for the instance variable caffeine content is only allowed to accept a

value between $50$ and $300($both inclusive$)$

$$RiskyAmount $(10$ pts$)$

Calculates the number of coffee$$s before it would be dangerous to consume more within a short time frame, and it is based on this formula:

$$ cups amount $=180\mathrm{.}0/(($caffeine content $/100\mathrm{.}0)*6\mathrm{.}0)$

Returns the maximum number of coffee cups that can be consumed before it could become a health risk.

$$Equals $(10$ pts$)$

has a parameter of type Coffee

Returns true if this coffee$$s instance matches with the other coffee$$s instance

$$toString $(10$ pts$)$

$$ Returns a String with the format

Name: $<>$

Caffeine Amount: $<>$

CSCE $145$: Algorithmic Design I

$$ Create a test class: CoffeeTester $(15$ pts$)$

$$This class contains a main method

$$Create $2$ objects of the type Coffee

$$The user must be asked to enter the name and caffeine content of both coffees, and those

values must be assigned as long as they are valid.

$$The program must then print out the properties of each coffee $($name and caffeine content$)$ and print out the number of cups that if consumed within an hour would be a health risk.

$$The program must then determine if the two coffee$$s have the same properties.

$$Finally$,$ the user must be prompted to either stop the program or restart it$.($See Example$)$

$$ Coding Style $(9$ points$)$ Readable Code

$$Meaningful identifiers for data and methods.

$$Proper indentation that clearly identifies statements within the body of a class, a

method, a branching statement, a loop statement, etc.

$$All the above must apply for full credit.

$$ Comments $(6$ pts$)$

$$ Your name at the beginning of the file as a single$$line comment. $(1$ pt$)$

$$ At least $5$ meaningful comments in addition to your name. These must describe the

function of the code it is near. $(5$ pts$)$

Example:

Welcome to the Coffee Hour!!! What$$s the name of the first coffee?

CSCE $145$: Algorithmic Design I

Double Triple Loca Mocha Latte Venti Grande

What$$s the caffeine content?

$150$

Coffee Name: Double Triple Loca Mocha Latte Venti Grande Caffeine Amount: $150$

It would take $20\mathrm{.}0$ cups of Double Triple Loca Mocha Latte Venti Grande before it$$s dangerous to drink more.

What$$s the name of the second coffee?

Waffle House Coffee

What$$s the caffeine content?

$100$

Coffee Name: Waffle House Coffee

Caffeine Amount: $100$

It would take $30\mathrm{.}0$ cups of Waffle House Coffee before it$$s dangerous to drink more. Are both coffee$$s the same? False

Do you want to create more coffee objects? Enter $$Yes$$ or $$No$$:

No

Submission:

$$ Submit all $.$java files on Dropbox