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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a lambda expression?
💡 Hint: Think about the syntax.
Question 2
Easy
Write a lambda expression that prints 'Learning Java'.
💡 Hint: Remember the structure of a lambda expression.
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 is the primary purpose of a lambda expression in Java?
- To define a class
- To create an instance of a functional interface
- To shortcut for loops
💡 Hint: Think about what functional interfaces need for their implementation.
Question 2
Lambda expressions can take parameters.
- True
- False
💡 Hint: Refer back to how we defined lambda expressions.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a functional interface that defines a method to return the square of a number, and implement it using a lambda expression.
💡 Hint: Look at how you can pass the parameter to compute its square.
Question 2
Write a lambda expression that filters a list of integers to return only even numbers, using the Stream API.
💡 Hint: What method is used to filter data in streams?
Challenge and get performance evaluation