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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What method is used to create a Stream from a Collection?
💡 Hint: Think about how we access a method on a List.
Question 2
Easy
Which class has the static method stream() to convert an array?
💡 Hint: It's the same name as the method.
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 is used to create a Stream from a List?
- collect()
- stream()
- array()
💡 Hint: Think about methods you can call on a List.
Question 2
Using Arrays.stream() can take what type of data?
- True
- False
💡 Hint: Recall the method usage and corresponding data types.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a Java method that takes in an array of integers and returns a Stream, performing an operation that squares each number.
💡 Hint: Think about using map to modify each element in the Stream.
Question 2
Implement a function that uses Stream.of() to create a Stream of your favorite programming languages and returns the count of how many languages start with 'J'.
💡 Hint: Use filter() to narrow down the results for the specific condition.
Challenge and get performance evaluation