Homework 4 100% Satisfaction

Homework 4
Before attempting this project, be sure you have completed all of the reading assignments, hands-on
labs, discussions, and assignments to date.
(25 points) Design a class named Clock. You should use your IDE for this exercise. The class contains
private data fields for startTime and stopTime, a no argument constructor that initializes the startTime
to the current time, a method named start() that resets the startTime to the given time, a stop() method
that sets the endTime to the given time and a getElapsedTime() method that returns the elapsed time in
seconds. Create a TestClock class to construct a Clock instance and return the elapsed time. Command
line arguments should be used to send the start and end times. You should use the java.time classes.
Here is sample run:
java TestClock 11:45:12 11:48:13
Elapsed time in seconds is: 181

Grading Rubric:
The following grading rubric will be used to determine your grade:
Attribute
Design (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,
conditionals, classes
etc.) all of the time.

Functionality (10
points)

Exceeds
(5 points)

Employs correct and
appropriate use of
programming
structures (loops,
conditionals, classes
etc.) most of the time.

Efficient algorithms
used all of the time.
(9-10 points)

Efficient algorithms
used most of the time.
(7-8 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

Rarely employs correct
and appropriate use of
programming
structures (loops,
conditionals, classes
etc.)
Poorly structured and
inefficient algorithms.
(0-6 points)

Test cases (5 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

demonstrating the
successful compiling
and running of the
program.
(3-4 points)
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.
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:

(0-2 points)
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

Your deliverables include all Java files (.java) and a single word (or PDF) 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 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 4 assignment area no later than the due date listed in the calendar.