This document outlines the assignments for PRG 420, which includes weekly individual assignments analyzing and coding Java programs that incorporate different programming concepts each week such as simple programs, conditionals, loops, arrays, and exception handling. It provides the instructions and resources for each assignment, as well as discussion questions. The assignments involve writing Java code to demonstrate understanding of that week's topics and analyzing provided code to predict outputs.

1. PRG 420 All Assignments
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PRG 420 Week 1 Individual Analyzing a Simple Java™ Program
(New Syllabus)
PRG 420 Week 1 Coding a Simple “Hello, world!” Java™ Program
(New Syllabus)
PRG 420 Week 2 Analyzing a Program Containing if-then and switch
(New Syllabus)
PRG 420 Week 2 Coding a Program Containing if-then and switch
(New Syllabus)
PRG 420 Week 3 Analyzing a Program Containing Loops (New
Syllabus)
PRG 420 Week 3 Coding a Program Containing Loops (New
Syllabus)
PRG 420 Week 4 Analyzing a Program Containing Arrays (New
Syllabus)
PRG 420 Week 4 Coding a Program Containing an Array (New
Syllabus)
PRG 420 Week 5 Analyzing a Program Containing Exception
Handling (New Syllabus)
PRG 420 Week 5 Coding a Program Containing Exception Handling
(New Syllabus)
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2. PRG 420 Week 1 Coding a Simple “Hello, world!”
Java™ Program(New Syllabus)
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Individual: Coding a Simple “Hello, world!” Java™ Program
Instructions:
Resource:
• PRG 420 Week One Coding Assigment Text File (starter code for
this
assignment that includes placeholders)
For this assignment, you will apply what you learned in analyzing a
simple Java™ program by writing your own Java™ program. The
Java™ program you write should do the following:
• Display a prompt on the console asking the user to type in his or her
first name
• Construct the greeting string "Hello, nameEntered!"
• Display the constructed greeting on the console
Complete this assignment by doing the following:
1. Download the linked text file.
2. Add comments to the code by typing your name and the date in the
multi-line comment header.

3. ==============================================
PRG 420 Week 1 DQ 1
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Watch the first and second videos for Week 1. Explain a little about
the Java Virtual Machine, what it executes, how it might be similar to
any other language, and how it is different from a native language,
such as C++.
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PRG 420 Week 1 DQ 2
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Java is a portable language, and being an object-oriented
programming language, it also encourages component reusability.
How does Java achieve these two important features? How are these
features desirable in modern software engineering?
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PRG 420 Week 1 DQ 3
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You are a bank manager and you are helping a new bank teller
understand the kind of accounts the bank offers. If a customer comes

4. in asking to open a new savings account, the teller needs to ask what
kind of account--passbook savings or certificate of deposit--the
customer would like to open. Remind the customer that all accounts
with our bank are insured by the FDIC. You should explain that all
accounts earn some interest; a savings account’s interest is
compounded monthly. You should assign a unique account number
after accepting the customer’s initial deposit. If the customer chooses
to receive statements electronically, the system will send an e-mail
with a monthly statement; if the customer chooses not to, then a paper
statement will be sent by mail quarterly. If savings account is a class,
give an example of each of the following as it relates to that savings
account. Explain your reasoning behind your example. o Superclass o
Subclass o Attribute o Method o Instance (object) o Encapsulation
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PRG 420 Week 1 Individual Analyzing a Simple
Java™ Program (New Syllabus)
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Individual: Analyzing a Simple Java™ Program
Instructions:
Resource:
• PRG 420 Week One Analyze Assignment Text File
Analyzing Java™ code--that is, reading and predicting the outcome of
Java™ code, given one or more inputs--is an essential skill. The
ability
to analyze code allows you to learn from example code and tutorials.
It

5. also allows you to write and debug your own Java™ code.
For this assignment, you will be analyzing the Java™ code in the
linked
text file.
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PRG 420 Week 1 Individual Assignment Hello
world
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Create a program in Java™ that displays “Hello world!” Take a
screen shot that shows the program’s successful compilation and
execution. Then submit your program along with the screen shot.
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PRG 420 Week 2 Analyzing a Program Containing
if-then and switch(New Syllabus)
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www.prg420.com
Individual: Analyzing a Program Containing if-then and switch
Instructions:
Resource:

6. • PRG 420 Week Two Analyze Assignment Text File
The ability to read through Java™ code and predict the results, given
specific inputs, is an extremely useful skill.
For this assignment, you will be analyzing the Java™ code in the
linked
text file, and predicting the results given specific input.
Carefully read through the code line by line, then answer the
following
questions in a Microsoft® Word document:
1. What is the output of the program as it is written?
2. What would the output of the program be if you assigned I
AmHappy
to false, num to 35, and numDayOf PRG 420 Week to 5?
3. What would the output of the program be if you assigned the
I AmHappy to 5, num to 50, and numDayOf PRG 420 Week to 8?
Submit your completed Word document using the Assignment Files
tab.
Supporting Material: PRG 420 Week Two Analyze Assignment Text
File
==============================================
PRG 420 Week 2 Coding a Program Containing if-
then and switch(New Syllabus)
For more course tutorials visit

7. www.prg420.com
Individual: Coding a Program Containing if-then and switch
Instructions:
Resources:
• PRG 420 Week Two Coding Assigment Text File (starter code for
this
assignment that includes placeholders)
• PRG 420 Week Two Recommended Activity Text File (examples of
how to
code a switch statement, an if-then-else statement, and how to
construct a string to display text onscreen)
For this assignment, you will apply what you learned in analyzing
Java™ code so far in this course by writing your own Java™
program.
The Java™ program you write should do the following:
• Accept user input that represents the number of sides in a polygon.
Note: The code to do this is already written for you.
• If input value is not between 3 and 5, display an informative error
message
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PRG 420 Week 2 DQ 1
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8. www.prg420.com
Please watch the first three videos for Week 2 (around 40 minutes).
Explain how an outside class may be given access to find the value of
a private instance variable, or to change the value of a private instance
variable. Why does this add value to your program?
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PRG 420 Week 2 DQ 2
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What are the three types of errors that you can encounter in a Java™
program? Describe them, and explain how you would minimize the
errors. What are some examples of errors that you have seen before?
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PRG 420 Week 2 DQ 3
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A class is a blueprint for an object. A class may have a default
constructor, a constructor with arguments, accessor methods, mutator
methods, public fields, and private fields. Choose a category (such as
animal, vehicle, and so on) and describe how you would design a
class for it.
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9. PRG 420 Week 2 Individual Assignment Netbeans
Project (annual compensation)
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Write a Java™ application using NetBeans™ Integrated Development
Environment (IDE) that calculates the total annual compensation of a
salesperson. Consider the following factors:
A salesperson will earn a fixed salary of $50,000
A salesperson will also receive a commission as a sales incentive.
Commission is a percentage of the salesperson’s annual sales. The
current commission is 5 % of total sales.
The total annual compensation is the fixed salary plus the commission
earned.
The Java™ application should meet these technical requirements:
The application should have at least one class, in addition to the
application’s controlling class (a controlling class is where the main
function resides).
There should be proper documentation in the source code.
The application should ask the user to enter annual sales, and it should
display the total annual compensation.
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PRG 420 Week 3 Analyzing a Program Containing
Loops(New Syllabus)
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10. www.prg420.com
Individual: Analyzing a Program Containing Loops
Instructions:
Resource:
• PRG 420 Week Three Analyze Assignment Text File
For this assignment, you will be analyzing the Java™ code in the
linked
PRG 420 Week Three Analyze Assignment Text File, and predicting
the results.
You will also examine both the code and the output for
inconsistencies
And clarity. This Java™ code includes examples of for, while, and do
while
Loops.
Carefully read through the code line by line, then answer the
following
questions in a Microsoft® Word document:
1. What is the output of the program as it is written?
2. What improvement(s) could be made to this code to make the
output clearer or more accurate, or to make the code easier to
==============================================
PRG 420 Week 3 Coding a Program Containing
Loops(New Syllabus)

11. For more course tutorials visit
www.prg420.com
Individual: Coding a Program Containing Loops
Instructions:
Resource:
• PRG 420 Week Three Coding Assignment Text File (starter code for
this
assignment that includes placeholders)
For this assignment, you will apply what you learned in analyzing for,
while, and do-while loops by writing these statements yourself. The
Java™ program you write should do the following:
• Display a pyramid of asterisks onscreen (i.e., a nested for loop)
• Display the integers 10 to 1 in decreasing order, one number per line
(i.e., a while/do-whlie loop)
• Add 7 until the sum becomes greater than 157, at which point the
program should display both the sum and the number of 7s added
Complete this assignment by doing the following:
1. Download the linked PRG 420 Week Three Coding Assignment
Text File.
2. Add comments to the code by typing your name and the date in the
multi-line comment header.
==============================================

12. PRG 420 Week 3 DQ 1
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Please watch the first and the fifth (next to the last) videos for Week 3
(feel free to use the transcripts, too!) . Tell me about the similarities
between the conditionals in if statements and the conditionals in while
statements.
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PRG 420 Week 3 DQ 2
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Convert the following program from for loop to while loop. class
ArithmeticProgression { public static void main (String [] args) { int
sum = 0; for (int i = 1; i <= 1000; i++) { sum = sum + i;
System.out.println(Integer.toString(sum)); } } }
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PRG 420 Week 3 DQ 3
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There are 3 kinds of loops—for loop, while loop, and do while loop.
Under which circumstances would each kind of loop be more
appropriate? Explain your answers using specific examples.

13. ==============================================
PRG 420 Week 3 DQ 4
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Consider the following conditions: CONDITION 1: while ( !(cChoice
== 'Q' || cChoice == 'q') ) CONDITION 2: while ( cChoice != 'Q' ||
cChoice != 'q' ) Do Conditions 1 and 2 give the same result? What
tool or technique would you use to explain the result?
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PRG 420 Week 3 Individual Assignment Netbeans
Project (annual compensation with commission)
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www.prg420.com
Modify the Week Two Java™ application using Java™ NetBeans™
IDE to meet these additional and changed business requirements:
The company has recently changed its total annual compensation
policy to improve sales.
A salesperson will continue to earn a fixed salary of $50,000. The
current sales target for every salesperson is $120,000.
The sales incentive will only start when 80% of the sales target is met.
The current commission is 5% of total sales.
If a salesperson exceeds the sales target, the commission will increase
based on an acceleration factor. The acceleration factor is 1.5.

14. The application should ask the user to enter annual sales, and it should
display the total annual compensation.
The application should also display a table of potential total annual
compensation that the salesperson could have earned, in $5000
increments above the salesperson’s annual sales, until it reaches 50%
above the salesperson’s annual sales.
Sample Table: Assuming a total annual sales of $100,000, the table
would look like this:
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PRG 420 Week 4 Analyzing a Program Containing
Arrays(New Syllabus)
For more course tutorials visit
www.prg420.com
Individual: Analyzing a Program Containing Arrays
Instructions:
Resource:
• PRG 420 Week Four Analyze Assignment Text File
The ability to read through Java™ code and predict the results, given
specific inputs, is an extremely useful skill.
For this assignment, you will be analyzing the Java™ code in the
linked
PRG 420 Week Four Analyze Assignment Text File, and answering
questions
about the array that appears in the code.

15. Carefully read through the code line by line, then answer the
following
questions in a Microsoft® Word document:
==============================================
PRG 420 Week 4 Coding a Program Containing an
Array(New Syllabus)
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www.prg420.com
Individual: Coding a Program Containing an Array
Instructions:
Resource:
• PRG 420 Week Four Coding Assigment Text File (starter code for
this
assignment that includes placeholders)
For this assignment, you will apply what you learned in analyzing a
simple Java™ program by writing your own Java™ program that
creates and accesses an array of integers. The Java™ program you
write should do the following:
• Create an array to hold 10 integers
• Ask the user for an integer. Note: This code has already been written
for you.
• Populate the array. Note: The first element should be the integer

16. ==============================================
PRG 420 Week 4 DQ 1
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Assuming you want an array (named many) of seven ints what would
be the easiest way to write the code if you wanted many to contain all
zeros? What if you wanted many to contain a selection of seven
values, that were not all zeros? What would be the subscripts of all
the elements of many?
==============================================
PRG 420 Week 4 DQ 2
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What is the difference between arrays and ArrayList? What are the
advantages and disadvantages of an ArrayList, and when should you
use an ArrayList over a simple array?
==============================================
PRG 420 Week 4 DQ 3
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17. What is the difference between string and StringBuilder? What are the
advantages and disadvantages of a StringBuilder, and when should
you use a StringBuilder over a simple String?
==============================================
PRG 420 Week 4 Individual Assignment Netbeans
Project (annual compensation comparison)
For more course tutorials visit
www.prg420.com
Modify the Week Three Java™ application using Java™ NetBeans™
IDE to meet these additional and changed business requirements:
The application will now compare the total annual compensation of at
least two salespersons.
It will calculate the additional amount of sales that each salesperson
must achieve to match or exceed the higher of the two earners.
The application should ask for the name of each salesperson being
compared.
The Java™ application should also meet these technical requirements:
The application should have at least one class, in addition to the
application’s controlling class.
The source code must demonstrate the use of Array or ArrayList.
There should be proper documentation in the source code.
==============================================
PRG 420 Week 5 Analyzing a Program Containing
Exception Handling(New Syllabus)

18. For more course tutorials visit
www.prg420.com
Individual: Analyzing a Program Containing Exception Handling
Instructions:
Resource:
• PRG 420 Week Five Analyze Assignment Text File
For this assignment, you will be analyzing the code in the linked PRG
420 Week
Five Analyze Assignment Text File. This program contains exception
handling code. You will be evaluating the code and using what you
learned in this PRG 420 Week's readings to predict the results based
on the
program as written, as well as based on changing the value of a
specific variable.
Carefully read through the code line by line, then answer the
following
questions in a Microsoft® Word document:
1. What are the results of the program as written?
2. What results would the program produce if you changed the value
of
a from 0 to 3?
Submit your completed Word document using the Assignment Files
tab.

19. Supporting Material: PRG 420 Week Five Analyze Assignment Text
File
==============================================
PRG 420 Week 5 Coding a Program Containing
Exception Handling(New Syllabus)
For more course tutorials visit
www.prg420.com
Individual: Coding a Program Containing Exception Handling
Instructions:
Resource:
• PRG 420 Week Five Coding Assignment Text File (starter code for
this
assignment that includes placeholders)
For this assignment, you will apply what you learned in analyzing a
simple Java™ program by writing your own Java™ program. The
Java™ program you write should do the following:
• Organize the code capable of throwing an exception of type
ParseException as a try block.
• Include a catch block to handle a ParseException error thrown by
the
try block.
• Include a hard-coded error that results in a ParseException to prove

20. that the code can catch and handle this type of exception.
Complete this assignment by doing the following:
1. Download the linked PRG 420 Week Five Coding Assignment
Text File.
2. Add comments to the code by typing your name and the date in the
==============================================
PRG 420 Week 5 DQ 1
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Please explain one use for a static variable in a class. Please explain
how you might use one static method ( not main() ) in a class.
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PRG 420 Week 5 DQ 2
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In your opinion, what are the three biggest challenges in planning and
designing a solution for a programming problem? What can you do to
overcome these challenges? How would you apply these techniques to
the programs in this class?
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PRG 420 Week 5 DQ 3
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21. www.prg420.com
Using an example from your work or daily life, describe an "is-a"
relationship. Why is an "is-a" relationship important when designing
an inheritance between classes?
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