Java Interview Questions · interview question

Which practice avoids a common mistake with Inheritance vs Composition?

Multiple choiceMediumjava-interview-2026interviewjavapitfall

Do not inherit only to reuse code if the subtype cannot preserve the parent contract naturally.Prefer the version of Inheritance vs Composition that makes behavior less predictable as long as the code compiles.Silence the Inheritance vs Composition problem by using raw types, broad catches, or shared mutable state.Ignore the Inheritance vs Composition issue and rely on team discipline instead of APIs or contracts.

Answer and explanation

Correct answer

A. Do not inherit only to reuse code if the subtype cannot preserve the parent contract naturally.

Why

Do not inherit only to reuse code if the subtype cannot preserve the parent contract naturally. This is a common failure mode in real Java code and a frequent interview follow-up.

Test yourself on Java Interview Questions

A free test with instant, explained results. No account needed.

Start free test

All Java Interview Questions questions →

Which practice avoids a common mistake with Inheritance vs Composition?

Correct answer

Why

More Java Interview Questions questions