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Homework 3

 

Before attempting this project, be sure you have completed all of the reading assignments, hands-on

 

labs, discussions, and assignments to date.

 

(25 points) 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 if 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.

 

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.

 

Grading Rubric:

 

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

 

Attribute

 

Design (5 points) Exceeds

 

(5 points) Meets

 

(3-4 points) Does not meet

 

(0-2 points) Exhibits proper use of

 

parameters, and

 

selection of data types

 

all of the time. Exhibits proper use of

 

parameters, and

 

selection of data types

 

most of the time. Rarely exhibits proper

 

use of parameters, and

 

selection of data types. Employs correct and

 

appropriate use of

 

programming

 

structures (loops, Employs correct and

 

appropriate use of

 

programming

 

structures (loops, Rarely employs correct

 

and appropriate use of

 

programming

 

structures (loops, Functionality (10

 

points) Test cases (5 points) conditionals, classes

 

etc.) all of the time. conditionals, classes

 

etc.) most of the time. conditionals, classes

 

etc.) Efficient algorithms

 

used all of the time.

 

(9-10 points) Efficient algorithms

 

used most of the time.

 

(7-8 points) Poorly structured and

 

inefficient algorithms.

 

(0-6 points) Extra effort was

 

apparent through the

 

addition of significant

 

and additional

 

functionality beyond

 

the scope of the

 

assignment. Program fulfills most

 

functionality. Program does not fulfill

 

functionality. Most requirements

 

were fulfilled. Few requirements

 

were fulfilled. Screen captures

 

provided

 

demonstrating the

 

successful compiling

 

and running of the

 

program.

 

(3-4 points) (0-2 points) (5 points)

 

Test cases provide

 

comprehensive

 

coverage of all code

 

paths.

 

Discussion of run-time

 

errors included. Java Style Guide (5

 

points) (5 points)

 

Code impeccably neat

 

and well-organized.

 

Extensive In-line

 

comments providing

 

additional insight into

 

code design and

 

functionality Test cases provide

 

coverage of most code

 

paths.

 

Test cases results well

 

documented providing

 

pass/fail results for

 

each test case.

 

(3-4 points)

 

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. No or insufficient test

 

cases

 

Minimal supporting

 

evidence provided to

 

verify testing actually

 

took place.

 

(0-2 points)

 

Code rarely follows

 

recommended Java

 

style guide 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:

 

Your deliverables include your Java files (.java) and a single word document. The Java files should be

 

named appropriately for your applications. Your word document should include screen captures

 

showing the successful compiling and running of each application, and a detailed description of the test

 

plan for each application. The screen captures should document your successful use of the IDE. The test

 

plan should include the input, expected output, actual output and if the test case passed or failed.

 

Submit your files to the Homework 3 assignment area no later than the due date listed in the calendar.

 

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DATE ANSWERED

Oct 14, 2020

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