Understanding Java Method Overloading

In Java, method overloading allows a class to have multiple methods with the same name. However, each must have a different set of parameters, either in the number of parameters, their data types, or both. This powerful feature enhances code...

February 25, 2025

Jakarta WebSocket Essentials: Full-Duplex Communication

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Jakarta WebSocket Essentials: Full-Duplex Communication

Have you ever wondered what happens when you send a message to friends or family over the Internet? It’s not just magic — there’s a fascinating technology at work behind the scenes called WebSocket. This powerful protocol enables real-time communication,...

November 6, 2024

Mastering Java Strings: String Pool, Immutability, and the Power of St

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Mastering Java Strings: String Pool, Immutability, and the Power of St

Introduction Welcome to another deep dive into essential Java concepts! This time, we’ll uncover the inner workings of Strings in Java—how they are stored, what makes them efficient, and the game-changing role of StringBuilder. Understanding these fundamentals not only optimizes...

November 4, 2024

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Lendo a entrada do console

Métodos de Leitura do InputStream: read(): Permite ler bytes diretamente do fluxo. Três versões de read(): int read(): Lê um único byte e retorna -1 no fim do fluxo. int read(byte dados[]): Lê bytes até preencher o array dados, atingir...

November 2, 2024

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Java Is Greener on Arm

Even those not particularly interested in computer technology have heard of microprocessor architectures. This is especially true with the recent news that Qualcomm is rumored to be examining the possibility of acquiring various parts of Intel and Uber is partnering...

October 31, 2024

How to Get Plain Text From Common Documents in Java

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How to Get Plain Text From Common Documents in Java

In this article, we’ll learn how to extract plain text strings from a few of the most common file types (PDF, DOCX, XSLX, PPTX) we can expect to deal with on a day-to-day basis as programmers in an enterprise environment....

October 31, 2024

Filtering Java Collections via Annotations – DZone

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Filtering Java Collections via Annotations – DZone

Since Java 8, the programming workload of iterating over collections and selecting a subcollection (filtering) based on defined constraints (predicates) has been considerably simplified using the new Stream API. Despite this new feature, some scenarios can still overwhelm developers by...

October 29, 2024

Data Structures: Creating Custom Node Classes

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Data Structures: Creating Custom Node Classes

As a developer, mastering data structures is a crucial skill that can unlock your problem-solving potential. While the standard collection framework in Java provides a solid foundation, sometimes you need to go beyond the built-in data structures and create your...

October 25, 2024

Dust: Open-Source Actors for Java – DZone

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Dust: Open-Source Actors for Java – DZone

Virtual Threads Java 21 saw the supported introduction of virtual threads. Unlike regular Java threads (which usually correspond to OS threads), virtual threads are incredibly lightweight, indeed an application can create and use 100,000 or more virtual threads simultaneously. This...

October 21, 2024

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Mastering Date-Time APIs – DZone

In this article, we’ll address four problems covering different date-time topics. These problems are mainly focused on the Calendar API and on the JDK Date/Time API. Disclaimer: This article is an abstract from my recent book Java Coding Problems, Second Edition....

October 16, 2024

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