PRG/420 Week 1

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Includes Working Java Build and Program File and Explanation of Code

Week One Analyze Assignment Zip 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
also allows you to write and debug your own Java™ code.
For this assignment, you will be analyzing the Java™ code in the linked
zip file.
Carefully read through the code line by line, then answer the following
questions in a Microsoft® Word document:
1. What syntax signals a Java™ comment? (In other words, what
symbol(s) tell the Java™ compiler not to process certain text?)
2. Type the line(s) of code that accept user input.
3. Type the line(s) of code that process user input.
4. Type the line(s) of code that produce output.
5. Type the result this program would produce if a user, when
prompted, responded by typing "everyone" and then hit Enter.
6. Type the result this program would produce if a user, when
prompted, responded by typing in "Mickey Mouse" and hit Enter.
7. Type the result this program would produce if a user, when
prompted, responded by typing "Benjamin Franklin" and hit Enter.
Submit your completed Word document using the Assignment Files tab.

Includes Working Java Build and Program File and Explanation of Code

Resource: Week One Coding Assigment Zip 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 and unzip the linked zip file.
2. Add comments to the code by typing your name and the date in the multi-line comment header.
3. Replace the following lines with Java™ code as directed in the file:
• LINE 1
• LINE 2
• LINE 3
• LINE 4
4. Comment each line of code you add to explain what you intend the code to do.
5. Test and modify your Java™ program until it runs without errors and produces the results as described above.
Note: Refer to this week's analyzing code assignment if you need help.
Submit your Java source (.java) code file using the Assignment Files tab.

Discussion Question: Portable languages and Component Reusability

Java is a portable language, and being an object-oriented programming language, it also encourages component re-usability. How does Java achieve these two important features? How are these features desirable in modern software engineering?

Discussion Question: Saving Account as a Class

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.

PRG/420 Week 2

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Learning Team: FAQ: Decision Constructs
Answer the following questions as a team:
1. In what circumstances would a programmer use if-then-else instead of if-then?
2. What is the advantage of using the switch statement over a series of if-then-else statements?
3. Why does my code not recognize the "if/else" lines and fall through to the "then" code line?
After your team has finished answering the questions collectively, add them, along with the question text, to your Java FAQ document. Refer to the Week 1 Task, "Learning Team: Formatting a Java™ FAQ".
The team member responsible for submitting the team's work will submit the formatted FAQ document containing this week's questions and answers using the Assignment Files tab.

Individual: Analyzing a Program Containing if-then and switch

Resource:  Week Two Analyze Assignment Zip 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
zip 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 iAmHappy to false,

          num to 35, and numDayOfWeek to 5?
      3. What would the output of the program be if you assigned the iAmHappy to 5,

          num to 50, and numDayOfWeek to 8?
Submit your completed Word document using the Assignment Files tab.

Includes Working Java Build and Program File and Explanation of Code

Resources:  Week Two Coding Assigment Zip File (starter code for this
assignment that includes placeholders), and Week Two Recommended Activity Zip 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
     • If input value is between 3 and 5, use a switch statement to display a message

        that identifies the correct polygon based on the number of sides matching the

        input number (e.g., triangle, rectangle, or polygon)
Complete this assignment by doing the following:
1. Download tnd unzip ahe linked Week Two Coding Assigment Zip File.
2. Read the file carefully, especially the explanatory comments of what the existing code does.
3. Add your name and the date in the multi-line comment header.
4. Refer to the following linked Week Two Recommended Activity Zip File to see examples of how to code all of the Java™ statements (i.e., switch, println(), and if-then-else) you will need to write to complete this assignment.
5. Replace the following lines with Java code as directed in the file:
• LINE 1
• LINE 2
6. Comment each line of code you add to explain what you intend the code to do.
7. Test and modify your Java™ program until it runs without errors and produces the results as described above.
Note: Refer to this week's analyzing code assignment if you need help.
Submit your Java source (.java) code file using the Assignment Files tab.

Discuss what other industry examples of if/then/else logic you can think of. How might an organization's environment affect a programmer's choice of variable types?

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?

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 3

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Learning Team: FAQ: Loops
Answer the following questions as a team:
1. What is an endless loop, and how can a programmer avoid coding one?
2. In what situation should a programmer choose a while loop over a do-while loop, and why?
3. What is a nested loop?
After your team has finished answering the questions collectively, add them, along with the question text, to your Java FAQ document. Refer to the Week 1 Task, "Learning Team: Formatting a Java™ FAQ". The team member responsible for submitting the team's work will submit the formatted FAQ document containing this week's questions and answers using the Assignment Files tab.

PRG/420 Week 4

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Individual: Analyzing a Program Containing Arrays

Includes Working Java Build and Program File and Explanation of Code

Both Programs Work and Provide the Same Results but are codes a little differently.

Resource:  Week Four Analyze Assignment Zip 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 Week Four Analyze Assignment Text File, and answering questions about the array that appears in the code.
Carefully read through the code line by line, then answer the following questions in a Microsoft® Word document:
1. If an array had not been chosen to hold the data manipulated in this program, how else (i.e., with what other data types) could it have been represented?
2. Which approach, using an array or using the alternative you identified in question #1, is shorter/easier?
3. What is the output of this program?
4. What would be the result of using a println() statement to display the value of arraynum[8]?
5. How many values can arraynum contain, and why?
Submit your completed Word document using the Assignment Files tab.

Includes Working Java Build and Program File and Explanation of Code - Option#1

Includes Working Java Build and Program File and Explanation of Code - Option#2

Resource:  Week Four Coding Assigment Zip 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 input by the user. The second through tenth elements should each be the previous element + 100. For example, if the user inputs 10, the first array value should be 10, the second 110, the third 210, and so on.
• Display the contents of the array on the screen in ascending index order.
Complete this assignment by doing the following:
1. Download and unzip the linked Week Four Coding Assigment Zip File.
2. Read each line of the file carefully, including the detailed instructions at the top.
3. Add comments to the code by typing your name and the date in the multi-line comment header.
4. Replace the following lines with Java™ code as directed in the file:
• LINE 1
• LINE 2
• LINE 3
• LINE 4
• LINE 5
5. Comment each line of code you add to explain what you intend the code to do.
6. Test and modify your Java™ program until it runs without errors and produces the results as described above.
Note: Refer to this week's analyzing code assignment if you need help.
Submit your Java source (.java) code file using the Assignment Files tab.

Discussion Question: Arrays vs. Databases

Arrays in Java™ are used to hold data as are databases, also.
Research and discuss the differences between these two approaches. In what situations would it be appropriate to use an array to hold data, and in what situations would it be appropriate to use a database instead? Are there any scenarios in which it might be appropriate to use both a database and an array to process data in the same Java™ app?

Discusson Question: Savings Account
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.
• Superclass
• Subclass

Supporting Activity: “is-a”
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? What are the differences between "is-a" and "has-a" relationship?

PRG/420 Week 5

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Learning Team: FAQ: Exceptions and Strings

Includes 2 Options!

Answer the following questions as a team:
1. When would a programmer use String vs. StringBuilder?
2. What are Java™ exceptions, and why should programmers handle them?
3. What is the difference between a Java™ error and a Java™ exception?
4. What is the difference between a checked exception and an unchecked exception?
After your team has finished answering the questions collectively, add them, along with the question text, to your Java FAQ document. Refer to the Week 1 Task, "Learning Team: Formatting a Java™ FAQ".
The team member responsible for submitting the team's work will submit the formatted FAQ document containing this week's questions and answers using the Assignment Files tab.

Includes Working Java Build and Program File and Explanation of Code

Resource:  Week Five Analyze Assignment Zip File
For this assignment, you will be analyzing the code in the linked Week Five Analyze Assignment Zip File. This program contains exception handling code. You will be evaluating the code and using what you learned in this 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.

Includes Working Java Build and Program File and Explanation of Code

Resource:  Week Five Coding Assigment Zip 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 thown by the try block.
• Include a hard-coded error that results in a ParseException to prove that the code can catch and handle this type of exception.
Complete this assignment by doing the following:
1. Download and unzip the linked Week Five Coding Assigment Zip File.
2. Add comments to the code by typing your name and the date in the multi-line comment header.
3. Replace the following lines with Java™ code as directed in the file:

• LINE 1
• LINE 2
4. Replace the value assigned with one of the variables so that the program throws an exception.
5. Comment each line of code you add to explain what you intend the code to do. Be sure to include a comment for the replacement value you added in Step 4 that causes the program to throw an exception.
6. Test and modify your Java™ program until it runs without errors and produces the results described above.
Note: Refer to this week's analyzing code assignment if you need help.
Submit your Java application file using the Assignment Files tab.

Discussion Question: Comparisons of Time and Date
This week's supporting activity asks you to create a simple Java™ app that identifies and displays information about the current date, time, and day of week.
If you were not able to complete the Supporting Activity, "Working with Dates," successfully, post the problems you are having with the code. What compiler error appears? If your code compiles, what incorrect output appears?
If you were able to complete the Supporting Activity, "Working with Dates," successfully, help your classmates who are having difficulties.
Research and discuss how you could add to the supporting activity's code by including this comparison:
If today's date is later than January 1, 1980, display "Today is later than January 1, 1980" on the console.
If today's date is earlier than January 1, 2020, display "Today is earlier than January 1, 2020" on the console.
What Java™ methods would you use to code these new requirements?
If you get one or both of these comparisons to work, post the code for your classmates to see.

Supporting Activity: 3 Biggest Challenges

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?