[Solved] Which of the following best illustrates how encapsulation improves software maintainability? - Ans: By restricting direct access to object data and exposing controlled interfaces | OOP & Design Patterns

OOP & Design Patterns - Encapsulation - Data Hiding, Getters/Setters & Access Modifiers

Which of the following best illustrates how encapsulation improves software maintainability?

ABy allowing all class fields to be accessed publicly for flexibility

BBy restricting direct access to object data and exposing controlled interfaces

CBy removing all getter and setter methods to simplify the class

DBy making all methods static to avoid object state

Step-by-Step Solution

Solution:

Step 1: Understand encapsulation
Encapsulation hides internal data and exposes only necessary methods.
Step 2: Identify maintainability benefit
Restricting direct access prevents unintended side effects and eases future changes.
Final Answer:
Option B -> Option B
Quick Check:
Encapsulation controls access to data [OK]

Quick Trick: Encapsulation hides data, exposing only safe methods [OK]

Common Mistakes:

MISTAKES

Trap Explanation:

PITFALL

Options suggesting public fields or no access control seem simpler but break encapsulation.

Interviewer Note:

CONTEXT

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