Practice Best Practices (5.11) - Java Streams and Lambda Expressions

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11 questions

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6 sample questions

Question 1.
What is a Stream in Java?
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Think about how it works with collections.
Question 2.
Define a stateful operation.
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Consider how they can introduce side effects.
3Question 3.
When should you use Streams?
- For simple tasks
- For complex data processing
- Only with collections
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Consider the nature of the operation.
4Question 4.
True or False: Stateful operations are safe to use with Streams.
- True
- False
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Think about how they interact with shared state.
Question 5.
Create a Stream operation that takes a list of numbers and returns a list of their squares, ensuring you do not modify any external state.
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Use the map operation to transform data without side effects.
Question 6.
Devise a scenario where using parallel streams would cause problems due to shared mutable state and suggest how to avoid that.
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Look into concurrent programming and thread-safety principles.

7 more questions in this section. Enroll free to practise them all.