Stream API
Q1: What is the Stream API in Java 8?
A: The Stream API is a powerful and expressive API for processing sequences of elements, supporting functional-style operations on streams of data.
Q2: How does the Stream API improve code performance?
A: It can perform operations lazily, enabling more efficient processing by only computing the elements as they are needed.
Q3: Can you explain the difference between intermediate and terminal operations in a Stream?
A: Intermediate operations are lazy and produce a new stream, while terminal operations are eager and produce a result or side-effect.
Q4: Provide an example of using the Stream API for filtering elements.
A: An example is using List.stream().filter(condition) to create a new stream with filtered elements.
Q5: How does parallel processing work with the Stream API?
A: The Stream API supports parallel processing through methods like parallel() and parallelStream(), allowing concurrent execution on multi-core systems.
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