If a class in the LLD violates the 'open-closed principle', what is the MOST appropriate corrective measure?

medium📝 Analysis Q6 of Q15

LLD - Advanced LLD Concepts

ARefactor the class to allow behavior extension via inheritance or composition without modifying existing code

BMerge the class with other classes to reduce the number of modules

CRemove all public methods to prevent external changes

DRewrite the entire class from scratch using a different programming language

Step-by-Step Solution

Solution:

Step 1: Understand open-closed principle
It states software entities should be open for extension but closed for modification.
Step 2: Identify fix
Refactoring to support extension via inheritance or composition achieves this without modifying existing code.
Step 3: Eliminate incorrect options
Merging classes or removing public methods does not address the principle; rewriting is unnecessary.
Final Answer:
Refactor the class to allow behavior extension via inheritance or composition without modifying existing code -> Option A
Quick Check:
Enable extension without changing existing code [OK]

Quick Trick: Refactor for extension without modification [OK]

Common Mistakes:

MISTAKES

Master "Advanced LLD Concepts" in LLD

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More LLD Quizzes