🍃 Learning Spring Framework | Enterprise Java Development

Developer: Mallu200 | Program: X-Workz Full-Stack Training

This repository is a comprehensive technical archive of my transition from Java Standard Edition to the Spring Enterprise Ecosystem. It tracks the evolution of my skills from core dependency management to building robust, test-driven B2B systems.

---

🏗️ Core Modules & Learning Path

I have organized my training into specialized modules, each representing a critical pillar of the Spring Framework (Non-Boot/Standard Spring):

📁 01-Spring-Core-IOC

• IoC Container: Mastering ApplicationContext for centralized bean management.
• Dependency Injection: Practical implementation of Constructor vs. Setter Injection.
• Scopes & Lifecycle: Understanding Singleton vs. Prototype and bean lifecycle hooks.

📁 02-Spring-AOP (Aspect Oriented Programming)

• Modularity: Removing logging and transaction "clutter" from business logic.
• Logic: Implementation of @Before, @After, and the powerful @Around advice.
• Pointcuts: Precise execution targeting for performance monitoring and execution time tracking.

📁 03-Spring-Data-JPA-ORM

• Hibernate Integration: Configuring LocalContainerEntityManagerFactoryBean for ORM.
• MySQL Persistence: Mapping Entities to relational tables and optimizing queries.
• Transactions: Automated commit/rollback management using JpaTransactionManager.

📁 04-Spring-MVC-Web

• Front Controller: Mastering the DispatcherServlet workflow.
• Architecture: Using @Controller for routing and Model for data transfer.
• Web Setup: Configuration of ViewResolvers and internal resource handlers.

📁 05-Enterprise-Testing

• JUnit Integration: Using SpringJUnit4ClassRunner to validate bean wiring.
• Web Testing: Implementing @WebAppConfiguration to mock the Servlet environment during integration tests.

---

🛡️ Capstone Project: Agri-Stock Pro B2B

The "agri-stock-pro" folder represents the culmination of all modules into a production-grade Agricultural Inventory Management system.

🛰️ Project Deep-Dive:

Agri-Stock Pro is designed to manage high-volume agricultural inventory (Seeds, Fertilizers, Pesticides, and Machinery) with enterprise-grade stability.

• Tiered Architecture: Implements a strict Controller → Service → Repository → Entity flow for separation of concerns.
• Performance Monitoring: Leverages Spring AOP to track the execution time of every service method, ensuring optimal database performance.
• Data Integrity: Employs a tiered DTO → Entity architecture. Data is sanitized in the service layer before being persisted into MySQL 8.0 using Hibernate ORM.
• Integration Testing: High test coverage using JUnit 4, ensuring dependency injection and DB connectivity (EntityManager) are fully functional before deployment.
• Enterprise UI: A professional, distraction-free Flat Design interface utilizing a Deep Navy (#1B2631) and Slate Gray (#2C3E50) palette, optimized for high-efficiency business operations.

---

🛠️ Technical Competencies

• Frameworks: Spring Core, Spring AOP, Spring MVC, Hibernate ORM.
• Database: MySQL 8.0, JPA (Java Persistence API), JDBC Template.
• Testing: JUnit 4, Spring Test Context, @WebAppConfiguration.
• Web Tech: JSP, JSTL, CSS3 (Professional Flat Design), Tomcat 9.0.
• Build Tools: Maven (Dependency & Lifecycle Management), Lombok.

---

© 2026 Mallu200 | Developed at X-Workz Training Centre