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Spring does a surprising amount of work between "I found a @Component" and "the bean is ready to inject" — and it's all invisible. So I built a visual
1. Object An object is an instance of a class. It represents a real-world thing and contains data (variables) and behavior (methods). 2. Class
Difficulty: Easy Topics: Array Platform: Leetcode Problem Statement Our hero Teemo is attacking an enemy Ashe with poison attacks! When Te
You add @Transactional to a method, expecting that if anything fails, the whole thing rolls back. Then one day a payment fails halfway through, and in
For explanation Watch video :: code:: import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import
When I first started learning Spring Boot, I was overwhelmed by annotations. Every file seemed to have symbols starting with @. @SpringBootApplicati
During my second year as a computer science student, I spent nearly an entire weekend debugging a Java project. The assignment itself wasn't unusuall
Java LLD: How to Design Git (Version Manager) in an Interview Designing a Version Control System (like Git) is a classic Low-Level Design (
Project Valhalla has been Java's most anticipated, slowest arriving feature for over a decade. On June 15, 2026, Oracle engineer Lois Foltan confirmed
Why I built this Every new Spring Boot project starts the same way. JWT setup. Security config. CORS. Rate limiting. Docker. CI/CD. Exception handl
leetcode.com Problem Statement get() put() Both operations mu
geeksforgeeks.org Problem Statement Given an array, find the first smal
leetcode.com Problem Statement Design an LRU (Least Recently Used) Cach
Getting Started with Solon 4.0: A Modern Java Framework That Puts Performance First I've been working with Java frameworks for a while — st
What is Backend? Backend is the server-side part of an application that handles the logic, database, security, and communication between the user i
When working with PowerPoint files in a Java application, you may sometimes need to split a large presentation into smaller files. For example, you m
If you've been building APIs for a while, you already know that writing one that works and writing one that's great are two very different things. A p
June 26 2026 Programming languages Choosing the right programming language for backend development is one of the most important decisions
As a Java developer, I kept wasting time manually writing POJOs from JSON API responses. So I spent a week building a small tool to fix that.
Components of Java Architecture Java architecture consists of three main components and those are JRE(Java Runtime Environment), JDK(Java Development