Introduction to Java Stream API The Stream API, introduced in Java 8, revolutionized how we process collections by providing a declarative, functional, and parallel-processing approach. Instead of writing verbose loops, developers can chain operation...
The streams were introduced in my previous article. This is the second article in the series. Comparison-based stream operations We will explain several common methods, some of them were mentioned in the previous article. sorted It sorts the elements...
1️⃣ Find Second Highest Number in a List javaCopyEditList<Integer> numbers = Arrays.asList(5, 1, 9, 2, 9, 7); Optional<Integer> secondHighest = numbers.stream() .distinct() .sorted(Comparator.reverseOrder()) .skip(1) .findFirst(); Sy...
목표 : Stream API의 map과 flatMap의 차이점과 각각의 활용 사례를 예시 코드와 함께 확인해보자. 1️⃣StreamApi의 Map ? 먼저 코드를 통해 확인하자. //Map public class Main{ public static void main(String[] args) throws IOException{ BufferedReader br = new BufferedReader(new InputStrea...
Programming is as much about solving problems as it is about communicating our intent clearly. When writing code, one must ask: are we telling the computer how to perform each step, or are we expressing what needs to be achieved? The distinction betw...
It can be classify into two operation. Intermediate operation Transform a stream into another stream. Examples: filter, map, distinct, sorted, limit, etc. Terminal operation It's provide the result and terminate the stream. Example: forEach, co...
We have already talked about Streams and Lambda expressions in JAVA on other posts, but on this one, I'd like to talk about it again on more specific topics related to some more common features and functions used by our community. In this article, we...
#Foreword Before we begin, I want to clarify that I am not a professional programmer, I am just endeavoring to create a document to oragnize my thoguhts for my future reference. This document will focus on conversion using 'stream()', a topic that I ...
In Java Stream API, operations are classified into two main types: intermediate operations and terminal operations. Intermediate operations are those that transform a stream into another stream, allowing you to perform various transformations, filter...
Java Stream API, introduced in Java 8, provides a powerful and expressive way to process collections of data in a functional and declarative manner. Streams enable you to perform operations like filtering, mapping, and reducing on data sets with conc...
![[ Java ] Stream Api의 map vs flatMap](https://cdn.hashnode.com/res/hashnode/image/upload/v1737274959744/7925979b-682e-47e3-8367-780b8a42de24.png)
