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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the method to create a stream from a list?
💡 Hint: Think about how you start using streams.
Question 2
Easy
What does the filter operation do?
💡 Hint: Consider filtering items based on a specific criteria.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What method do you use to create a stream in Java?
- .collect()
- .stream()
- .forEach()
💡 Hint: Think about how you start working with streams.
Question 2
True or False: The map operation can change the elements in a stream.
- True
- False
💡 Hint: Consider what the purpose of map is.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a program that takes a list of integers and produces a list of their squares if they are odd.
💡 Hint: You need to filter and transform the numbers in one go.
Question 2
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.
💡 Hint: Focus on how you can leverage collect to join elements into a single string.
Challenge and get performance evaluation