UI Design

• Main Menu:

  • The user is presented with the following options:
    • "Add Expense"
    • "View Remaining Budget"
    • "Set Spending Limits"
    • "Exit"

• Add Expense (UC1):

  • If the user selects "Add Expense":
    • The user is shown a list of available categories ("Groceries," "Entertainment," etc.).
    • The user is prompted to select a category.
    • The user is prompted to enter the expense amount.
    • The system creates a new transaction record and updates the corresponding category's spent amount.
    • A confirmation message "Expense added." is displayed.
    • If the category's spending limit is approaching or exceeded, a warning message is displayed.
    • The user is returned to the main menu.

• View Remaining Budget (UC2):

  • If the user selects "View Remaining Budget":
    • The system displays the budget status for each category.
    • For each category, the display includes:
      • Category name
      • Remaining budget
      • A visual representation of the remaining budget (a progress bar).
    • If any category's spending limit is approaching or exceeded, a warning message is displayed.
    • The user is returned to the main menu.

• Set Spending Limits (UC3):

  • If the user selects "Set Spending Limits":
    • The user is shown a list of available categories.
    • The user is prompted to select a category.
    • The user is prompted to enter a new spending limit for the selected category.
    • The system updates the category's spending limit.
    • A confirmation message "Spending limit updated." is displayed.
    • The user is returned to the main menu.

• Exit:

  • If the user selects "Exit":
    • The application terminates.