🚂 IRCTC-Simulator-Java

A complete console-based application simulating a simplified railway ticket booking service, built purely with Core Java.

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✨ Features

• User Management: Register and log in with unique usernames.
• Train Search: Find available trains between a specified source and destination.
• Ticket Booking: Reserve seats on a selected train, with automatic seat availability checks.
• Ticket Cancellation: Cancel an existing booking, which automatically frees up seats on the train.
• Data Persistence: Utilizes Java Collections (List, Map, ArrayList, HashMap) to manage train, user, and ticket data in-memory.

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🛠️ Technology Stack

• Language: Java
• Environment: Console/Command-Line Application
• Concepts: Object-Oriented Programming (OOP), Data Structures (Lists, Maps), Scanner for Input.

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🚀 How to Run Locally

1. Clone the Repository:

   git clone [https://github.com/YourUsername/IRCTC-Simulator-Java.git](https://github.com/YourUsername/IRCTC-Simulator-Java.git)
   cd IRCTC-Simulator-Java

2. Compile the Java Files: Compile all .java files located in the src directory.

   javac *.java

   (Note: Depending on your project structure, you might need to adjust the path or use an IDE like IntelliJ or Eclipse to run the main class.)
3. Run the Application: Execute the main class, IRCTCAPP.

   java IRCTCAPP

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📐 Project Structure & Class Diagram

The system is organized around several key classes:

Class	Responsibility
IRCTCAPP.java	Main entry point; handles all console I/O and user interaction.
UserService.java	Manages user registration, login, and the current session state.
BookingService.java	Manages train data, search logic, ticket creation, and cancellation.
User.java	Data model for a railway user.
Train.java	Data model for a train, including seat booking/cancellation logic.
Ticket.java	Data model for a booked ticket.