Java: Java Modules (JPMS)

Strong encapsulation prevents unintended dependencies and increases maintainability.

Strong encapsulation ensures that internal implementation details are not exposed to other modules, reducing the risk of accidental coupling. In an e-commerce system, if the payment processing module exposes its internal classes, other modules might start relying on them, making future changes difficult. By encapsulating these details, you maintain flexibility to refactor or replace implementations without affecting the rest of the codebase.