Programming Tutorials

leetcode.com Problem Statement Given an array nums and an integer k, re

leetcode.com Problem Statement Given an array heights[] representing th

Node.js vs Java vs Python in 2026 – Which One is Better for Your Career? Technology is evolving faster than ever. AI, Cloud Computing, Web Developmen

MEETUP EXPERIENCE: Today I have attended with CODE ON JVM meetup. This is for my first meetup. I have attended this meetup with my friends. happy to

Capa-Java: Why Sidecar Isn't Always the Answer for Hybrid Cloud Java Honestly, I've been building Java applications for hybrid cloud for ab

OrderHub Day 8: tests. The feature that lets you change everything else without fear. Today the backend gets a real test suite — domain unit tests, Mo

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