In general, a given object cannot be created, read, updated or deleted by any function without having a sufficient access level.
Due to access restrictions, all modifications to its value must occur via functions defined within the class.
With sufficient modularity and minimal access level, large code bases can avoid many challenges associated with complexity.
[4] Retrieved from Java Coffee Break Q&A [5] Here, the imperative variable balance is defined as a private int.
This ensures other classes, methods and functions cannot accidentally overwrite the variable balance.