Homework 2 | Complete Solution

Homework 2

Before attempting this project, be sure you have completed all of the reading assignments, hands-on
labs, discussions, and assignments to date.
Write a Java program to simulate a pick 3, 4 or 5 lottery drawing. A lottery game of this type will draw
values between 0 and 9. You should use the Math.Random() or the java.util.Random() class to generate
the values in the lottery drawing. The program should prompt the user for which lottery game they want
to play (pick 3 or pick 4 or pick 5). The program should also ask how many times they want to play the
game. The output should show the numbers picked for each game and it should sum each individual
number selected into a total of all numbers. For example, if a user of the program made a selection to
randomly draw 2 three digit numbers (as in the example shown below) the sum would be 3 + 5 + 0 + 1 +
0 + 0 = 9. Here is an example of what a run of your code should produce.
Do you wish to make lottery game selections? Y or y for yes, N or n for no
Input from keyboard - Y
Which lottery game do you want to play (Enter 3 for pick-3, 4 for pick-4, 5 for pick-5)
Input from keyboard - 3
How many games would you like to play?
Input from keyboard - 2
Thank you! The numbers randomly generated were:
350
100
The sum of each individually selected number is 9
Be sure to use at least two classes and at least one constructor method in your answer. Also present
runs for all three types of games. Be sure to have loop logic that allows the user to choose to stop
playing.
2
Grading Rubric:
The following grading rubric will be used to determine your grade:
Attribute Exceeds Meets Does not meet
Design (5 points) (5 points)
Exhibits proper use of
parameters, and
selection of data types
all of the time.
Employs correct and
appropriate use of
programming
structures (loops,
conditionals, classes
etc.) all of the time.
Efficient algorithms
used all of the time.
(3-4 points)
Exhibits proper use of
parameters, and
selection of data types
most of the time.
Employs correct and
appropriate use of
programming
structures (loops,
conditionals, classes
etc.) most of the time.
Efficient algorithms
used most of the time.
(0-2 points)
Rarely exhibits proper
use of parameters, and
selection of data types.
Rarely employs correct
and appropriate use of
programming
structures (loops,
conditionals, classes
etc.)
Poorly structured and
inefficient algorithms.
Functionality (10
points)
(9-10 points)
Extra effort was
apparent through the
addition of significant
and additional
functionality beyond
the scope of the
assignment.
(7-8 points)
Program fulfills most
functionality.
Most requirements
were fulfilled.
Screen captures
provided
demonstrating the
successful compiling
and running of the
program.
(0-6 points)
Program does not fulfill
functionality.
Few requirements
were fulfilled.
Test cases (5 points) (5 points)
Test cases provide
comprehensive
coverage of all code
paths.
Discussion of run-time
errors included.
(3-4 points)
Test cases provide
coverage of most code
paths.
Test cases results well
documented providing
pass/fail results for
each test case.
(0-2 points)
No or insufficient test
cases
Minimal supporting
evidence provided to
verify testing actually
took place.
Java Style Guide (5
points)
(5 points) (3-4 points) (0-2 points)
3
Code impeccably neat
and well-organized.
Extensive In-line
comments providing
additional insight into
code design and
functionality
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.
Code rarely follows
recommended Java
style guide
Submission requirements:
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 shots
showing the successful compiling and running of each application, and a detailed description of the test
plan for each application. 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 2 assignment area no later than the
due date listed in the calendar.