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Java · Junior · Theory

How does the Stream API work, and what role do lambdas play in it?

~4 min by voice

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This checks whether the candidate understands how the Stream API works (a pipeline, intermediate and terminal operations, laziness), not just the syntax, and whether they know a lambda is an implementation of a functional interface.

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Similar questionsWhat problems have you run into when using the Stream API, and in which cases would you prefer a regular loop? Mid-level

Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

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Best with headphones · ~4 min