ITP100 Software Design Capstone ATM Interface Project

 

ITP100 Software Design Capstone ATM Interface Project

Here is my pseudo code outline for the capstone project:

Things I had to look up:

For this project there were a few items I was unfamiliar with and had to look up how to do. This list may not be all inclusive:

First was this bit of code I used in my PIN verification method, the ("\\d+") -

  if (!enteredPin.matches("\\d+")) 

 { System.out.println("Invalid input. Numbers only please.");

I needed to find a way to ensure that user input for the pin number was a digit.

Next was to convert it to an integer (so I could compare it to the variable I set for the actual pin) -

int convertEnteredPin = Integer.parseInt(enteredPin);

 

Some fun bits of creativity that I enjoyed:

I got creative in order to verify the data integrity entered by users for withdrawal transactions and reject bad data.

                   double customerSavingsWithdrawalAmmount = scanner.nextDouble();

                    if (customerSavingsWithdrawalAmmount > savingsAccountBalance 

                        || customerSavingsWithdrawalAmmount <= 0 

                        || (customerSavingsWithdrawalAmmount != 20 

                        && customerSavingsWithdrawalAmmount != 40 

                        && customerSavingsWithdrawalAmmount != 80))    

                    {

                        System.out.println("Sorry, insufficient balance or you did not enter 20, 40, or 80");

                        System.out.println("Please try a different transaction.");

                        count2++;

                        return chooseAccountType();

                    }

It's basically two types of comparisons; the first verifies account balance is less than withdrawal amount and whether it is $0 or less, and kicks the user back. Next it looks to see whether a transaction request is not 20, 40, or 80 and kicks the user back to the beginning of the method if it's not. It took me a while of trial and error to get the logic to work for these AND and OR  statements.

Finished today: 4/29/2024. 

It was a lot harder than I anticipated. I had to seek help on the internet for a few things (as far as I know there was no provision set against using outside sources; other than having A.I. write your code for you or plagiarizing someone else's code. For example: our books for the course are online and accessed via the internet; and there's certainly no provision against using our course material for the project; thus accessing the internet for help is acceptable.) Most of the code I had an idea of what to do, but I did need to check the book or the internet to verify syntax o a couple occasions. Some of the things I had to look up were something like this: "if (receiptChoice.equalsIgnoreCase("yes"))".  Which was basically error handling for case input from the user. 

I did almost everything with nested 'if/else' clauses. I used two 'while' loops to count the transactions and the input attempts for the PIN number and exit the program.

Some of the things I did was work on parts of the code in a modularized fashion. Like the receipt function:

                        // Prompt for receipt

                        System.out.print("Would you like a receipt? (yes/no): ");

                        String receiptChoice = scanner.nextLine();

                        // Print receipt if requested

                        if (receiptChoice.equalsIgnoreCase("yes")) 

                        {

                            System.out.println("\n*** RECEIPT ***");

                            System.out.println("Transaction Type: Withdrawal from Savings");

                            System.out.println("Amount: $" + customerSavingsWithdrawalAmmount);

                            System.out.println("Date and Time: " + date);

                            System.out.println("Current Savings Account Balance: $" + savingsAccountBalance);

                            System.out.println("****************\n");

                        } 

                        

                            else if (receiptChoice.equalsIgnoreCase("no")) 

                                {

                                System.out.println("No receipt requested.");

                                } 

                        

                            else    

                                {

                                System.out.println("Invalid choice. No receipt will be provided.");

                                }

Once I got what I wanted, I modified for checking and inserted it into the code.

I used 3 tools for my project. My primary IDE was VS Code. I also edited and saved whole code and snippets in Notepad++. I used Jet Brains WebStorm to a limited extent. I'm not overly familiar with it yet, but I do like it's extended functionality.

One of the things I started doing somewhat early on was versioning. I would get a part of my code working and save it. Then I would 'save as' to make a new version. I started doing this after I had a nice sized chunk of code I had working, stop working after adding a significant amount of new code to it and couldn't undo my changes to a successfully running code.

Some of the things I got wrong in the beginning were trying to create a method for everything, like my goodbye message. It was better to just use a print statement wherever it was needed. I don't recall why I thought it was better to have it as it's own method in the beginning, I ended up changing before the midpoint though.