Homework 3 Solution

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Description

Before attempting this project, be sure you have completed all of the reading assignments, hands-on labs, discussions, and assignments to date.

Create a Java class named HeadPhone to represent a headphone set. The class contains:

Three constants named LOW, MEDIUM and HIGH with values of 1, 2 and 3 to denote the headphone volume.

A private int data field named volume that specifies the volume of the headphone. The default volume is MEDIUM.

A private boolean data field named pluggedIn that specifies if the headphone is plugged in. The default value is false.

A private String data field named manufacturer that specifies the name of the manufacturer of the headphones.

A private Color data field named headPhoneColor that specifies the color of the headphones.

A private String data field named headPhoneModel that specifies the Model of the headphones.

getter and setter methods for all data fields.

A no argument constructor that creates a default headphone.

A method named toString() that returns a string describing the current field values of the headphones.

A method named changeVolume(value) that changes the volume of the headphone to the value passed into the method

Create a TestHeadPhone class that constructs at least 3 HeadPhone objects. For each of the objects constructed, demonstrate the use of each of the methods. Be sure to use your IDE to accomplish this assignment.

The google recommended Java style guide, provided as link in the week 2 content, should be used to format and document your code. Specifically, the following style guide attributes should be addressed:

Header comments include filename, author, date and brief purpose of the program. In-line comments used to describe major functionality of the code.

Meaningful variable names and prompts applied. Class names are written in UpperCamelCase.

Variable names are written in lowerCamelCase. Constant names are in written in All Capitals.

Braces use K&R style.

Submission requirements

Deliverables include all Java files (.java) and a single word (or PDF) document. The Java files should be named appropriately for your applications. The word (or PDF) document should include screen captures showing the successful compiling and running of each of the test cases. Each screen capture should be properly labeled clearly indicated what the screen capture represents. The test cases table should be included in your word or PDF document and properly labeled as well.

Submit your files to the Homework 3 assignment area no later than the due date listed in your LEO classroom. You should include your name and HW3 in your word (or PDF) file submitted (e.g. firstnamelastnamehw3.docx or firstnamelastnamehw3.pdf)

Grading Rubric:

The following grading rubric will be used to determine your grade:

Attribute

Meets

Does not meet

Headphone Class

10 points

0 points

Three constants named LOW,

Three constants named LOW,

MEDIUM and HIGH with values

MEDIUM and HIGH with values

of 1, 2 and 3 to denote the

of 1, 2 and 3 were not included.

headphone volume

A private int data field named

A private int data field named

volume was not included.

volume that specifies the

volume of the headphone. The

A private boolean data field

default volume is MEDIUM.

named pluggedIn was not

included.

A private boolean data field

named pluggedIn that specifies

A private String data field

if the headphone is plugged in.

named manufacturer was not

The default value is false.

included

A private String data field

A private Color data field named

named manufacturer that

headPhoneColor was not

specifies the name of the

included.

manufacturer of the

headphones.

A private String data field

named headPhoneModel was

A private Color data field named

not included

headPhoneColor that specifies

the color of the headphones.

getter and setter methods for

all data fields were not

A private String data field

included.

named headPhoneModel that

specifies the Model of the

A no argument constructor was

headphones.

not included.

getter and setter methods for

A method named toString()was

all data fields.

not included.

A no argument constructor that

A method named

creates a default headphone.

changeVolume(value) was not

included.

A method named toString() that

returns a string describing the

An IDE (Netbeans or Eclipse)

current field values of the

was not used for this

headphones.

assignment.

A method named

changeVolume(value) that

changes the volume of the

headphone to the value passed

into the method

An IDE (Netbeans or Eclipse)

was used for this assignment.

Test Headphone Class

5 points

0 points

TestHeadPhone class was used

TestHeadPhone class was not

to construct at least 3

used to construct at least 3

HeadPhone objects.

HeadPhone objects.

For each of the objects

For each of the objects

constructed, the use of each of

constructed, the use of each of

the methods was demonstrated

the methods was not

demonstrated

An IDE (Netbeans or Eclipse)

was used for this assignment.

An IDE (Netbeans or Eclipse)

was not used for this

assignment.

Test Cases

5 points

0 points

A minimum of 3 test cases was

No test cases were provided.

used in the form of table with

columns indicating the input

values, expected output, actual

output and if the test case

passed or failed. The table

should contains 4 columns with

appropriate labels and a row for

each test case.

Test cases were included in the

supporting word or PDF

documentation.

Documentation and Style guide

5 points

0 points

Screen captures were provided

No documentation included

and labeled for compiling your

code, and running each of your

Java style guide was not used to

3 test cases.

prepare the Java code.

Header comments include

filename, author, date and brief

purpose of the program.

In-line comments used to

describe major functionality of

the code.

Meaningful variable names and

prompts applied.

Class names are written in

UpperCamelCase.

Variable names are written in

lowerCamelCase.

Constant names are in written

in All Capitals.

Braces use K&R style.


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