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Have you written code following the functional programming style?

sobes.tech AI

Answer from AI

The functional programming style in Java involves using functions as first-class objects, absence of side effects, and immutability of data. With the advent of Java 8, lambda expressions and the Stream API appeared, allowing code to be written in a functional style.

Example of using the functional style for filtering and transforming a list:

import java.util.*;
import java.util.stream.*;

List<String> names = Arrays.asList("Anna", "Bob", "Charlie", "David");

List<String> filtered = names.stream()
    .filter(name -> name.startsWith("A"))
    .map(String::toUpperCase)
    .collect(Collectors.toList());

System.out.println(filtered); // [ANNA]

This approach improves readability and allows for writing more declarative code.

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