PRG 420 Week 1 Individual Assignment Java™ Program

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.



PRG 420 Week 1 DQS 

DQ 1

Write a 200- to 300-word short-answer response to the following:

 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?


DQ 2

Write a 200- to 300-word short-answer response to the following:

 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 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




PRG 420 Week 2 Individual Assignment Salesperson Java™ Application Part I

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 $75,000.

· A salesperson will also receive a commission as a sales incentive. Commission is a percentage of the salesperson’s annual sales. The current commission 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.




PRG 420 Week 2 DQS 

Write a 200- to 300-word short-answer response to the following:

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?


DQ 2

Write a 200- to 300-word short-answer response to the following:

 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.


DQ 3

Resource: Excel scoring instrument
Write a 200- to 300-word short-answer response to the following:

 The scoring instrument has a section on style. These are the four criteria for style:

o Do identifiers logically describe use?
o Is indentation used correctly to illustrate the structure of the program?
o Is there a consistent naming convention?
o Do comments explain processing that is not obvious?

Give an example or counterexample that demonstrates each criterion. Why is each criterion important to a program?





PRG 420 Week 3 Individual Assignment Salesperson Java™ Application Part II


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 $75,000. 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%.

· 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:


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 conditional and looping structures.
There should be proper documentation in the source code



PRG 420 Week 3 DQS 

DQ 1

Write a 200- to 300-word short-answer response to the following:

Our focus this week is loops.
Select and complete one of the following activities:

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));
}
}
}

Compare the efficiency between a for loop and a while loop in the same program. Your program should be able to tell if a for loop is faster than a while-loop at the end of the program. Include the result of your run with the information on which one is faster.


DQ 2

Write a 200- to 300-word short-answer response to the following:

 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?


DQ 3

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.



PRG 420 Week 4 Individual Assignment Salesperson Java™ Application Part III


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 4 DQS

DQ 1

 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?


DQ 2

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 5 Learning Team Assignment Reusability

In the real world, an entire program is rarely written from scratch. It is very likely that there are classes or functions that already exist. The key to using these existing modules successfully depends on how modular the classes or functions are written.

In this Learning Team assignment, your mission is to take a section of one team member’s Week Four program and replace a similar section of another team member’s Week Four program.

Submit the following deliverables for this Learning Team assignment:

· A 700- to 1050-word paper describing the following:

o How the two programs were selected
o The process of identifying the classes or functions for replacement
o The changes needed to make the final Java™ application program work correctly

The final Java™ application program

PRG 420 Week 5 DQS 

DQ 1

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?


DQ 2

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?

DQ 3

Discuss what you feel is the biggest challenge you have encountered with java programming thus far. Discuss what you have found to be the most interesting aspect of java programming.