Java Interview Questions · interview question

Which practice avoids a common mistake with ArrayDeque as a Stack?

Multiple choiceMediumjava-interview-2026interviewjavapitfall

Prefer the version of ArrayDeque as a Stack that makes behavior less predictable as long as the code compiles.Do not model stack logic with LinkedList by default when ArrayDeque communicates the intent more directly.Ignore the ArrayDeque as a Stack issue and rely on team discipline instead of APIs or contracts.Silence the ArrayDeque as a Stack problem by using raw types, broad catches, or shared mutable state.

Answer and explanation

Correct answer

B. Do not model stack logic with LinkedList by default when ArrayDeque communicates the intent more directly.

Why

Do not model stack logic with LinkedList by default when ArrayDeque communicates the intent more directly. This is a common failure mode in real Java code and a frequent interview follow-up.

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Which practice avoids a common mistake with ArrayDeque as a Stack?

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