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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 and purpose of lambda expressions.
Question 2
Easy
Define a functional interface.
💡 Hint: Recall the main characteristic of a functional interface.
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 a lambda expression primarily used for in Java?
- Implementing multiple interface methods
- Creating an anonymous function
- Declaring a class
💡 Hint: Consider what happens when you use a lambda expression.
Question 2
True or False: A functional interface can contain multiple abstract methods.
- True
- False
💡 Hint: Recall the definition of functional interfaces.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a functional interface with a method that calculates the area of a rectangle and implement it using a lambda expression.
💡 Hint: Remember to define both the interface and the lambda implementation.
Question 2
Explain the role of 'final' and 'effectively final' in lambda expressions with an example.
💡 Hint: Consider how variable scope works in lambda expressions.
Challenge and get performance evaluation