Gym Management System

A comprehensive Java-based command-line application for managing gym operations, including member registration, staff management, fitness classes, and equipment inventory.

Demo

Features

🏋️ Member Management

• Register new members with unique IDs
• Update member information (contact, email, membership type)
• View member lists
• Remove members from the system
• Support for Standard and Premium membership types

👥 Staff Management

• Staff authentication and login system
• Add new staff members
• Update staff information
• Remove staff members
• Role-based access control

🏃 Fitness Classes

• Schedule new fitness classes
• Update existing class details
• Search classes by various criteria
• Cancel classes
• View available classes

🏋️‍♂️ Equipment Management

• Add new equipment to inventory
• Update equipment information
• Search equipment by name or description
• Delete equipment from inventory
• View complete equipment inventory

📊 Reporting System

• Generate membership reports
• Class attendance reports
• Equipment inventory reports
• Export reports to files

💾 Data Persistence

• Auto-save functionality
• Manual save/load operations
• Serialization support for data persistence

System Requirements

• Java 8 or higher
• Command-line interface
• Minimum 512MB RAM
• 50MB free disk space

Installation & Setup

1. Clone the repository:

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

2. Compile the Java files:

   javac *.java

3. Run the application:

   java Main

Usage

First Time Setup

The system comes with a default admin account:

• Staff ID: STF0000
• Password: admin
• Role: SysAdmin

Main Menu Options

1. Login - Authenticate as a staff member
2. Manage Staff - Add, update, or remove staff (requires login)
3. Register New Member - Add new gym members (requires login)
4. Update Member Information - Modify existing member details (requires login)
5. Display Member List - View all registered members
6. Remove Member - Delete member from system (requires login)
7. Manage Fitness Classes - Schedule, update, or cancel classes (requires login)
8. Display Available Classes - View all scheduled classes
9. Manage Equipment - Add, update, or remove equipment (requires login)
10. View Equipment Inventory - Display all equipment
11. Generate Reports - Create various system reports (requires login)
12. Logout - End current session
13. Exit - Close the application

Input Validation

The system includes comprehensive input validation:

• Names: Only alphabetic characters and spaces
• Phone Numbers: Must be 10 digits
• Email: Must follow standard email format
• Time Format: HH:MM AM/PM format
• Membership Types: Standard or Premium only

Data Storage

• All data is automatically saved to serialized files
• Auto-save can be toggled on/off
• Manual save operations occur after major changes
• Data is loaded automatically on startup

Class Structure

Core Classes

• Main.java - Entry point and application launcher
• GymInterface.java - Command-line interface handler
• GymManagementSystem.java - Backend operations
• Member.java - Member entity with unique ID generation
• Staff.java - Staff entity with authentication support
• User.java - Base class for Member and Staff
• FitnessClass.java - Fitness class entity
• Equipment.java - Equipment entity

Exception Classes

• InvalidUserException - Custom exception for user-related errors
• InvalidClassException - Custom exception for class-related errors

Key Features

Authentication System

• Secure login with staff ID and password
• Session management
• Role-based access control

ID Generation

• Members: MEM0001, MEM0002, etc.
• Staff: STF0001, STF0002, etc.
• Thread-safe unique ID generation

Input Validation

• Regex-based validation for all inputs
• Error handling with user-friendly messages
• Retry mechanisms for invalid inputs

Search Functionality

• Search classes by ID, name, instructor, or capacity
• Search equipment by name or description
• Case-insensitive search options

Error Handling

The system includes comprehensive error handling:

• Input validation with clear error messages
• Exception handling for all operations
• Graceful handling of invalid user inputs
• Safe data persistence operations

Future Enhancements

• GUI interface using JavaFX or Swing
• Database integration (MySQL/PostgreSQL)
• Member check-in/check-out system
• Advanced reporting with charts

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

For support or questions, please create an issue in the GitHub repository.

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Acknowledgment

👥 Group Members & Their Contributions This project was developed as part of a group effort for our coursework(Comp 2120). Special thanks to my teammates

Paul Osuji Designed and implemented the command-line interface (CLI) Developed core logic for managing Members, Staff, Equipment, and Fitness Classes Implemented security features including login/logout and role-based access Created the abstract User class and object templates for all major entities Led overall system architecture, testing, and integration

Inan Syed Assisted with I/O programming and data persistence logic Contributed to the autosave feature using multithreading Participated in report generation logic and code reviews

Temirlan Rashid Contributed to custom exception handling and input validation Assisted with ID generation logic and regex-based validation Participated in testing, debugging, and code reviews

Note: This is a console-based application designed for educational purposes and small gym operations.