Bank Account Application Throughout This Module We Have Disc

Bankaccount Applicationthroughout This Module We Have Discussed The F

BankAccount Application Throughout this module, we have discussed the five steps involved in program development. The first three steps include gathering requirements, using CRC cards to identify classes, responsibilities, and collaborators, and recording class information with UML diagrams. The scenario involves developing a banking application that allows users to check balances for Checking and Savings accounts. The task is to analyze the requirements for this application and complete the first three steps of program development based on these requirements.

Paper For Above instruction

Developing a comprehensive banking application requires a systematic approach centered around clear requirements, effective class design, and proper documentation through UML diagrams. The goal of this application is to allow users to view their balance for both Checking and Savings accounts. The initial phase begins with gathering requirements to understand user needs, then identifying core classes via CRC cards, and finally documenting class relationships with UML diagrams.

Gathering Requirements

The first step involves collecting detailed requirements for the banking application. Essential functionalities include the ability for users to check balances for their Checking and Savings accounts. Additional features might encompass account management, deposit and withdrawal options, transaction history, and security measures such as authentication. For the scope of this scenario, the primary requirement is balance inquiry, which necessitates the application to securely associate each user with multiple accounts and provide accurate balance information.

For the user interface, simplicity and clarity are vital, ensuring users can quickly access their account balances. Security considerations, such as login authentication, are critical to protect user information. Furthermore, the system must handle multiple users, each with individual accounts, emphasizing the importance of user account management. These requirements serve as the foundation for designing classes and their interactions.

Using CRC Cards to Identify Classes and Responsibilities

The next step involves creating CRC (Class-Responsibility-Collaborator) cards to identify the main classes involved in the application. Potential classes include User, Account, CheckingAccount, SavingsAccount, and BankSystem.

• User: Responsible for managing user information, login authentication, and providing access to accounts. Collaborates with Account classes to retrieve balance information.
• Account (abstract): Responsible for storing account details like account number and balance, with methods to get and set balance. Acts as a parent class for specific account types.
• CheckingAccount: Responsible for handling operations specific to checking accounts, such as balance inquiry and transaction processing.
• SavingsAccount: Responsible for handling operations for savings accounts, including balance inquiry and interest calculations if applicable.
• BankSystem: Responsible for managing the overall program flow, user input, and coordinating interactions between users and accounts.

This division of responsibilities ensures that each class has a clear purpose, facilitating maintainability and scalability.

Using UML Diagrams to Record Class Names, Attributes, Methods, and Relationships

The final step involves creating UML class diagrams to visualize the structure of the system. Classes and their attributes and methods are depicted, along with relationships such as inheritance and associations.

• Account (abstract class):- Attributes: accountNumber (String), balance (double)- Methods: getBalance(), setBalance(), deposit(amount), withdraw(amount)
• CheckingAccount (inherits Account):- Additional methods or attributes specific to checking accounts can be added as needed.
• SavingsAccount (inherits Account):- Additional methods such as calculateInterest() can be included.
• User:- Attributes: username (String), password (String), list of accounts- Methods: login(), viewBalance(accountType)
• BankSystem:- Methods: start(), processUserInput(), displayBalance(user, accountType)

Relationships include inheritance between Account and its subclasses, and associations between User and Accounts, illustrating that a User can have multiple Accounts.

Conclusion

Applying these first three steps—requirements gathering, CRC card development, and UML diagram creation—provides a solid foundation for the subsequent phases of program development. Properly defining classes, responsibilities, and relationships ensures the program is well-structured, flexible, and aligned with user needs. For a banking application, this systematic approach aids in creating a reliable system that can efficiently manage user accounts and provide essential functionalities like balance inquiries.

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