🛒 Spring Inventory Management System (Customized Store Application)

This project is a Spring Framework application with a Java backend and HTML front-end that I customized to meet the needs of a fictional customer store. The project demonstrates user interface customization, object-oriented programming, business logic enforcement, and unit testing within a professional full-stack workflow.

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🔑 Features I Implemented

• Customized User Interface (UI)

  • Updated the HTML front-end with store branding, product names, and part names.
  • Added design touches to improve usability and maintain original functionality.

• About Page

  • Added an “About” page describing the store, with navigation links to/from the main screen.

• Sample Inventory Setup

  • Implemented a sample inventory with five products and five parts.
  • Logic ensures data is only loaded if the database is empty.
  • Prevents duplicate entries by converting duplicate parts into “multi-pack” items.

• Buy Now Functionality

  • Added a “Buy Now” button to product listings.
  • Decrements product inventory when clicked.
  • Displays success/failure messages without affecting associated part quantities.

• Enhanced Part Tracking

  • Added minimum and maximum inventory fields to the Part entity.
  • Updated forms (InhousePartForm and OutsourcedPartForm) to accept min/max values.
  • Enforced inventory limits, ensuring quantities remain between the defined min and max.

• Validation Rules

  • Added error messages when:
    • Inventory is set below the minimum
    • Inventory exceeds the maximum
    • Updating products reduces part inventory below the minimum

• Unit Testing

  • Added unit tests in the PartTest class to confirm min/max validation logic.

• Code Cleanup

  • Removed unused validator classes to maintain a clean, professional codebase.

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📂 Project Structure Highlights

• Backend: Java with Spring Framework
• Frontend: HTML user interface customized for the store
• Testing: JUnit tests for validation logic
• Version Control: GitLab repository with structured commits for each feature

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💻 Skills Demonstrated

• Spring Framework (Java backend development)
• HTML customization for user-facing interfaces
• Object-Oriented Programming principles
• Business logic implementation and validation
• Unit testing with JUnit
• Professional Git version control practices

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🚀 Outcome

This project simulates real-world software customization, where an existing inventory management system was tailored to a customer’s needs. The result is a functional and extensible inventory system with:

• A branded front-end experience
• Custom business rules
• Inventory validation safeguards
• Clean, test-backed code ready for professional use

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