Java

Learn Java programming fundamentals, applications, and career opportunities. Explore object-oriented coding and frameworks.

Spring Annotations Cheat Sheet: Every Annotation You Need to Know (With Real Code Examples)

Spring Framework is an annotation-driven framework. @Service, @Autowired, @RestController, @Value, @Profile - these anno

How to Build Your First REST API with Spring MVC - A Complete Step-by-Step Guide

Most Spring MVC tutorials show you fragments - a controller here, an annotation there. By the end, you have a collection

How to Secure a Spring Boot REST API: Roles, Endpoints & JWT

Shipping a Spring Boot REST API without security is shipping a broken product. Every endpoint that reads, writes, or del

Spring Data JPA Tutorial: Entities, Relationships & Repositories

Every Spring Boot application that stores data needs to talk to a database. You could write raw SQL, manage JDBC connect

Spring Boot: Auto-Configuration, REST APIs, JPA & Security

Spring Boot has been the #1 Java backend framework for years - and in 2026, it's more dominant than ever. It powers

Java Lambda Expressions & Streams for Spring Boot: A Beginner's Complete Tutorial

Open any modern Spring Boot service class and you'll see code like this: userRepository.findAll().stream().filter(Us

Java OOP Concepts Every Spring Developer Must Master (With Real Code Examples)

Spring Boot is often described as a framework. But at its core, it is an OOP framework — one that uses Java's object

Why Most Beginners Fail at Spring Boot - And How Java Basics Fix That

Spring Boot has a reputation for being beginner-friendly. And in many ways, it is - it eliminates XML config, has smart

Java Roadmap for Spring Boot Developers: What to Learn Before Writing Your First Spring App

Every week, thousands of developers open a Spring Boot tutorial, get through the "Hello World" app, and then c

How to Learn Java Programming from Scratch: The 2025 Beginner’s Roadmap

Java remains the backbone of countless enterprise systems, web applications, Android development, and more in 2025. Its

Advanced Java Concepts and Techniques

Java has long been a favorite programming language due to its simplicity, reliability, and platform independence. While
100 Lessons
100 Lessons