Gym Membership Management System

This project is a Gym Membership Management System. The system is designed to manage gym members, trainers, classes, and registrations through a graphical user interface (GUI) built using java swing.

Project Overview

The Gym Membership Management System allows two types of users to interact with the system:

• Admin: Can add, view, and remove trainers.
• Trainer: Can add members, view members, add classes, view classes, register members for classes, cancel registrations, and view registrations.

The system is built using Java and follows a structured approach with three main packages:

1. backend: Contains all the core classes and logic for managing trainers, members, classes, and registrations.
2. frontend: Contains the GUI components that allow users to interact with the system.
3. constants: Contains interfaces for file names and login credentials.

Features

Admin Features

• Admin Login: Admins can log in using predefined credentials.
• Add Trainer: Admins can add new trainers to the system.
• View Trainers: Admins can view a list of all trainers.
• Remove Trainer: Admins can remove trainers from the system.

Trainer Features

• Trainer Login: Trainers can log in using predefined credentials.
• Add Member: Trainers can add new gym members.
• View Members: Trainers can view a list of all gym members.
• Add Class: Trainers can add new gym classes.
• View Classes: Trainers can view a list of all gym classes.
• Register Member for Class: Trainers can register members for specific classes.
• Cancel Registration: Trainers can cancel a member's registration for a class.
• View Registrations: Trainers can view all registrations.

File Handling

• All data related to trainers, members, classes, and registrations are saved to and read from text files (Trainers.txt, Members.txt, Class.txt, Registration.txt).

Validation

• The system ensures that only unique trainer IDs are added.

• Members must be registered with valid details (all fields filled).

• Class registration only occurs if there are available seats.

• Admin and Trainer login credentials are validated.

• Language & Frameworks: Java SE, Java Swing (for GUI)

• Architecture: Desktop application following OOP principles

• Data Storage: File-based (text/JSON files) instead of a relational database

• Design Patterns Used:

  • Singleton: For centralized file access and controllers
  • Factory Pattern: For creating different user types (Admin, Trainer)
  • Observer Pattern: Notifies GUI components on data changes (optional/extendable)

• SOLID Principles Demonstrated:

  • Single Responsibility: Each class has a focused task (e.g., TrainerManager, MemberManager)
  • Open/Closed: Classes can be extended without modifying core logic
  • Liskov Substitution: Admin and Trainer share common behaviors
  • Interface Segregation: Interfaces separate responsibilities (login, file handling)

How to Run the Project

1. Clone the Repository:

   git clone https://github.com/your-username/gym-membership-management-system.git