Java Programming for Complete Beginners - Java 16 - Step 16 - Simplify Functional Programming Code with Method Reference

The video tutorial introduces the concept of method references in functional programming. It begins with a basic example using a list of strings to demonstrate how method references can simplify code. The tutorial then explores both static and instance method references, highlighting their readability and efficiency. An exercise is provided to reinforce the learning, and the tutorial concludes by summarizing the benefits of using method references.

What is the primary purpose of using method references in functional programming?

• To reduce the number of variables

• To make the code more complex

• To increase execution time

• To improve code readability

Which of the following is a correct method reference for printing a string using System.out?

• System.out::println

• System.out::print

• System.out::display

• System.out::write

How can method references be used with instance methods?

• By using the class name followed by ::

• By using the instance name followed by ::

• By using the method name directly

• By using the method name followed by ::

What is the benefit of using method references with instance methods?

• It makes the code less readable

• It allows for more complex logic

• It simplifies the code and improves readability

• It increases the number of lines of code

In the exercise, what was the custom logic converted into a method reference?

• Finding the sum of numbers

• Filtering even numbers

• Calculating the average

• Sorting a list

Which method reference was used to compare two integers in the exercise?

• Integer::max

• Integer::min

• Integer::sum

• Integer::compare

What is a key takeaway from using method references in functional programming?

• They are not suitable for complex logic

• They complicate the code

• They are only useful for static methods

• They enhance code readability and can be used with both static and instance methods