💻 Spring Core Project - Laptop Management System

This is a simple Spring Core (Annotation-Based Configuration) project that demonstrates the use of:

• Dependency Injection (DI)
• Component Scanning
• @Autowired Annotation
• Layered Architecture (Service + Bean)

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🚀 Project Overview

This application simulates a basic laptop management system where:

• A Laptop object holds configuration details
• A LaptopService class accesses and displays those details
• Spring manages object creation and dependency injection

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🛠️ Technologies Used

• Java
• Spring Core
• Annotation-based Configuration

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📁 Project Structure

com.nit │

├── config

│ └── AppConfig.java

│ ├── sbeans

│ ├── Laptop.java

│ └── LaptopService.java

│ └── main

└── TestApp.java

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⚙️ Configuration

Spring configuration is handled using Java-based configuration with @Configuration and @ComponentScan.

📄 File: AppConfig.java
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📦 Components

🔹 Laptop (Bean Class)

• Annotated with @Component
• Stores laptop details like brand, processor, and RAM

📄 File: Laptop.java
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🔹 LaptopService (Service Class)

• Annotated with @Service
• Uses @Autowired to inject Laptop dependency
• Prints laptop details

📄 File: LaptopService.java
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▶️ Main Application

• Loads Spring container
• Retrieves beans from context
• Sets laptop details
• Calls service method to display data

📄 File: TestApp.java
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▶️ How to Run

1. Clone the repository
2. Import into your IDE (Eclipse/IntelliJ)
3. Ensure Spring Core dependencies are added
4. Run TestApp.java

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💡 Sample Output

Laptop Brand: Dell Processor: Intel i7 Ram: 16 GB

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📌 Key Concepts Demonstrated

• @Component → Marks a class as Spring Bean
• @Service → Specialized component for service layer
• @Autowired → Automatic dependency injection
• @Configuration → Java-based configuration
• @ComponentScan → Scans package for beans

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🎯 Conclusion

This project is a basic example of how Spring Core manages object creation and dependency injection using annotations. It helps in understanding the fundamental concepts required for building scalable Java applications.

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📬 Author

Developed as part of learning Spring Framework 🚀