Practice Built-in Functional Interfaces (java.util.function) - 22.4 | 22. Lambda Expressions and Functional Interfaces | Advanced Programming
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define what a Predicate does.

💡 Hint: Think of it as a check or condition.

Question 2

Easy

What is the purpose of a Supplier?

💡 Hint: Consider it as a source of values.

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 Predicate?

  • A function that returns an integer
  • A function that returns a boolean
  • A function that takes no arguments

💡 Hint: Think about its main purpose in logic.

Question 2

True or False: A Supplier requires input to produce a value.

  • True
  • False

💡 Hint: Consider how it generates value.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Write a series of lambda expressions that demonstrate the use of Predicate, Function, and Consumer on a list of Strings.

💡 Hint: Consider how you can leverage all interfaces in a single operation.

Question 2

Design a BinaryOperator that combines two products based on price, sorting them and returning the more expensive one.

💡 Hint: Consider the comparison logic that determines which product is more expensive.

Challenge and get performance evaluation