🌱 Spring Framework Tutorial

Welcome to my Spring Framework learning journey!

This repository documents my hands-on practice and notes as I explore and implement key Spring concepts. I’ve built this tutorial from scratch by combining lessons from trusted sources like GeeksforGeeks and my own interpretations to truly understand the Spring ecosystem.

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✅ What You’ll Learn

This project focuses on mastering the Spring Core module with real code examples and clear structure. Topics covered include:

• 🔧 Beans & IOC Containers

  • Understanding BeanFactory and ApplicationContext
  • Managing bean lifecycles and scope (singleton, prototype, etc.)

• 🧩 Dependency Injection (DI)

  • Constructor Injection
  • Setter Injection
  • XML and Annotation-based configurations

• 🧠 Spring Expression Language (SpEL)

  • Dynamically injecting values into beans using expressions

• 💡 Common Spring Annotations

  • @Component, @Service, @Repository, @Controller
  • @Autowired, @Qualifier, @Value, and more

• 🧙‍♂️ Annotation vs XML Config

  • Legacy XML-based bean configuration vs modern annotation-driven development

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📁 Project Structure

spring-tutorial/ # actual project flow in every springboot application. 
├── src/
│   ├── main/
│   │   ├── java/
│   │   │   └── com/ganesh/spring/    # Core Java logic
│   │   └── resources/
│   │       └── beans.xml             # XML configs
├── pom.xml                           # Maven build file
├── README.md

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⚙️ Prerequisites

• Java 8+
• Maven
• IDE (IntelliJ IDEA / Eclipse / VS Code)

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🚀 How to Run

1. Clone the repository:

   git clone https://github.com/yourusername/spring-tutorial.git
   cd spring-tutorial

2. Compile and run:

mvn clean install validate test package

3. or you can use maven wrapper.

./mvnw clean install