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Which of the following is a significant limitation of using interfaces or traits to avoid the Diamond Problem instead of multiple inheritance?

medium🪤 Complexity Trap Q6 of Q15
OOP & Design Patterns - Inheritance - Types, Method Resolution Order & Diamond Problem
Which of the following is a significant limitation of using interfaces or traits to avoid the Diamond Problem instead of multiple inheritance?
AInterfaces cannot provide method implementations, leading to code duplication
BTraits always cause ambiguity errors similar to the Diamond Problem
CInterfaces force all methods to be private, limiting reuse
DTraits prevent any form of method overriding
Step-by-Step Solution
Solution:

  1. Step 1: Understand interfaces and traits

    Interfaces declare methods without implementations, traits can provide implementations.

  2. Step 2: Analyze options

    A is correct because interfaces require implementing classes to duplicate code; B is false as traits handle conflicts; C is false, interfaces don't force privacy; D is false, traits allow overriding.

  3. Final Answer:

    Option A -> Option A

  4. Quick Check:

    Interfaces lack implementations causing duplication [OK]
Quick Trick: Interfaces lack implementations, traits do not [OK]
Common Mistakes:
MISTAKES
  • Confusing traits with interfaces
  • Assuming traits cause diamond ambiguity
  • Believing interfaces force private methods
Trap Explanation:
PITFALL
  • Candidates often confuse interfaces and traits, misattributing diamond issues to traits.
Interviewer Note:
CONTEXT
  • Assesses nuanced understanding of alternatives to multiple inheritance.
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