Programming Tutorials

Neon Number What is Neon number ? 9 => 81 9 neon number : There are only three neon numbers in the range of 0 to 100,000: 0, 1, and 9.

Understanding Camunda 8 can be confusing — especially with multiple components like Zeebe, Operate, Tasklist, and Identity. In this article, I explai

Ever pushed a Spring Boot app to production, only to get that gut-wrenching feeling you might have left a back door open? Maybe you spent days hunting

Response time dropped from 1200ms → 120ms. I always thought caching was the biggest performance booster… Turns out, I was completely overlooking som

Exception Handling is one of the core concepts in Java that helps you manage runtime errors and maintain the normal flow of your program. Java provid

Strong Number A Strong Number is a number in which the sum of the factorials of its digits is equal to the number itself. Take each digit → f

What is a Nested for Loop? A nested loop means: 👉 A for loop inside another for loop Outer loop → controls rows Inner loop → controls columns/repetit

Setting up a Java/.NET bridge project from scratch is one of those tasks that shouldn't be hard but somehow always is. Proxy generation, classpath wir

In modern software development and document management, working with PDF files is a common task. Beyond reading text and images, developers often need

In daily office work or data processing, controlling page breaks in Excel is often necessary, especially when printing reports, exporting files, or ge

Welcome to the second part of my rolling blog, where I start building CLIAR from the ground up-starting with the simplest possible parser—and see whe

Distributed Locks Are a Code Smell The Lock That Lied A single angry support ticket is usually an anomaly. Three identically ang

Our card runs a custom applet on a JCOP4 (Java Card Open Platform) chip. Here's what that actually means and how we built it. What Is Java C

Losing access to your cryptocurrency can be frustrating, stressful, and even frightening—but the good news is that recovery is often possible with the

AI can write code. Honestly, it can write it faster and with fewer syntax errors than most of us. But here's what it can't do: it doesn't know your sy

Java Card is the platform that runs inside billions of smart cards worldwide. If you've ever tapped a Visa or Mastercard, you've interacted with a Jav

Constructors & Constructor Overloading in Java A complete, beginner-friendly guide packed with real code, common interview questions, and

Exception Handling in Java: Stop Your Apps from Crashing Like a Beginner Let’s be honest. Every developer has written code that worked per

Hoje quero compartilhar alguns exercícios de Java do livro Dominando Java: 100+ Exercícios Resolvidos e Comentados para Acelerar seu Aprendizado, de R

Heap dump analysis is one of those tasks that usually pulls you out of your editor. You generate an .hprof file, open a separate tool, wait for it to