Spring Boot & Hibernate Learning Journey 🚀

This repository contains source code, practical examples, and projects created while mastering the Spring Framework ecosystem. It serves as a comprehensive guide to building robust web applications and RESTful services using modern Java technologies.

📚 Project Overview

The goal of this project is to document the process of building powerful web applications using the Spring ecosystem. It covers everything from core Spring concepts to advanced data management with Hibernate.

Key Technologies

• Language: Java
• Frameworks: Spring Boot, Spring MVC, Spring Framework
• ORM: Hibernate
• Build Tool: Maven/Gradle (Choose whichever you are using)

🧠 What I Am Learning

1. Spring Framework Core

• Understanding core components and dependency injection.
• Managing bean life cycles and configuration.

2. Spring Boot (RESTful Services)

• Leveraging auto-configuration for rapid development.
• Managing starter dependencies.
• Building scalable REST APIs.

3. Web Application Development (Spring MVC)

• Model-View-Controller (MVC) architecture.
• Request handling and routing.
• Form validation and frontend integration.

4. Data Management (Hibernate)

• Integrating Hibernate for efficient database interactions.
• Performing CRUD operations.
• Optimizing database performance.

🛠️ Prerequisites

To run these projects, you need:

• Java Development Kit (JDK): Version 17 or higher (recommended).
• IDE: IntelliJ IDEA, Eclipse, or VS Code.
• Basic Knowledge: Core Java programming.

📂 Project Structure

• /src: Main source code for the applications.
• /resources: Configuration files (application.properties/yml).
• /test: Unit and integration tests.

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🚀 Section 01: Introduction & Setup

Focus: Core Spring Boot concepts, Project Structure, Maven, and Configuration.

Status	Topic	Key Learnings
✅	Spring Initializr	creating the project, choosing dependencies
✅	Maven Concepts	pom.xml, dependency management, project structure
✅	REST Controller	@RestController, @GetMapping
✅	DevTools	Live reload, fast feedback loop
✅	Actuator	Monitoring app health and metrics
✅	Accessing Endpoints	Currently Learning
✅	Securing Endpoints	Basic security configuration
✅	Injecting Properties	Using application.properties & @Value
✅	Configuring Server	Port changes, server timeouts

🧩 Section 02: Inversion of Control & Dependency Injection

Focus: Mastering the Spring Container, managing dependencies, and configuring Spring Beans.

Status	Topic	Key Learnings
✅	Inversion of Control (IoC)	Outsourcing object creation to the Spring Factory
🔄	Dependency Injection (DI)	Currently Learning - Injecting helpers into the app
⬜	Constructor Injection	Recommended injection type, using @Autowired
⬜	Component Scanning	Using @Component and @ComponentScan
⬜	Setter & Field Injection	Alternative ways to inject dependencies
⬜	Qualifiers	Using @Qualifier to choose between multiple bean implementations
⬜	Primary Annotation	Using @Primary to set a default bean
⬜	Lazy Initialization	Improving startup time with @Lazy
⬜	Bean Scopes	Singleton (default) vs Prototype scopes
⬜	Bean Lifecycle	@PostConstruct (init) and @PreDestroy (cleanup)
⬜	Configuring Beans	Using @Configuration and @Bean for 3rd party classes

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This repository is for educational purposes and documents my progress in mastering modern Java web development.