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Are you preparing for coding interviews and struggling with LeetCode Problem 5: Longest Palindromic Substring? In this post, you'll learn a step-by-step dynamic programming solution in Java to efficiently solve…

Introduction When building REST APIs, clear and consistent error handling is key to delivering a great developer experience. Spring Boot does offer basic error handling out of the box—but let's…

Introduction Spring Security is essential for securing modern Java applications, but its exceptions can feel cryptic if you’re not prepared. Whether it's failed logins or unauthorized access, each exception comes…

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…