Month: March 2025

Introduction Robust error handling is essential for delivering reliable and secure Spring MVC applications. Out of the box, Spring provides a powerful WebErrorHandler that maps common exceptions to meaningful HTTP…

IntroductionComputer Science (CS) is the backbone of today’s digital world, powering everything from AI to web development. Whether you’re a beginner or looking to sharpen your skills, free online courses…

Introduction The “variable cannot be resolved” error in Java is a common compilation issue that often frustrates beginners and even seasoned developers. This error means the Java compiler can't find…

Java is thriving—but nobody has time to reinvent the wheel. These hand-picked libraries save you hours of coding, boost performance, and make your stack production-ready. Whether you're building APIs, crunching…

Write Clean, Layered Code with Intent—Not Just Functionality Struggling to choose between @Component, @Service, @Repository, and @Controller in Spring? You’re not alone. While they all register beans with the Spring…

You nailed the coding round, but then the interviewer asks:“If you return inside a catch block, will finally still execute?”Suddenly, you're unsure. Don’t sweat—this guide demystifies one of Java’s trickiest…

Java’s 28-year history hides quirks that defy logic—until you understand why they exist. Discover features that break coding “rules,” optimize performance, and explain mysterious bugs. 1. 0.0 == -0.0 Is…

Java Streams make code look elegant—until a hidden performance trap brings your system to its knees. Here’s how my seemingly “perfect” Stream code triggered 10,000 unnecessary database queries, and how…

Java annotations and Python decorators might look alike thanks to the @ symbol, but under the hood, they serve very different purposes. In this article, we break down how they…

If you’re facing the error “No primary or single unique constructor found for interface org.springframework.ui.Model” while running your Spring Boot project, you’re not alone. This issue often stems from misconfigured…

When building APIs with OpenAPI, managing date and time formats efficiently is crucial. If you need to generate Java models with LocalTime fields instead of the default OffsetDateTime for date-time…

India vs New Zealand Final Breaks Live Streaming Records with 60 Million+ Viewers The India vs New Zealand Final, one of the most anticipated cricket matches of the year, has…