Practice Stream Creation (1.6.1) - Functional Programming in Java

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9 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the method to create a stream from a list?
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Think about how you start using streams.
Question 2.
What does the filter operation do?
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Consider filtering items based on a specific criteria.
3Question 3.
What method do you use to create a stream in Java?
- .collect()
- .stream()
- .forEach()
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Think about how you start working with streams.
4Question 4.
True or False: The map operation can change the elements in a stream.
- True
- False
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Consider what the purpose of map is.
Question 5.
Create a program that takes a list of integers and produces a list of their squares if they are odd.
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You need to filter and transform the numbers in one go.
Question 6.
Using a list of strings, write a method that returns a single string, which is a concatenation of all names that are longer than 3 characters, separated by commas.
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Focus on how you can leverage collect to join elements into a single string.

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