Create a Simple Bank Account application in Python using Object-Oriented Programming (OOP) principles.
Requirements
1. Inside the application, define a class named BankAccount to manage operations through explicit instance methods.
2. The application will initialize an instance object with a base tracking balance using a constructor (__init__).
3. Run an active input menu loop inside the script execution execution to let users call specific object operations dynamically.
4. Validation Logic :

1. Parse core user selections via conditional structural gates to drop unsupported menu indices.
2. Convert runtime inputs safely into numerical float states to avoid standard calculation block system failures.
3. Monitor withdrawal boundaries inside class methods to block operations exceeding active account balances.

5. Print a clear confirmation message after updating values to confirm successful bank state transformations on screen.