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Homework 3 Solution
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.
