🚗 Vehicle Management System

• A beginner-friendly Java OOP project that models a simple Vehicle Management System.
• It focuses on demonstrating Encapsulation, Inheritance, Method Overriding and Upcasting/Downcasting in real-world scenarios using Car and Bike classes.

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🎯 Project Goal

To create a mini Java application that manages different vehicle types and showcases:

• Encapsulation through private fields & getters/setters
• Inheritance with a Vehicle base class and specialized Car & Bike classes
• Method overriding for vehicle-specific details
• Upcasting and safe downcasting

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📌 Project Requirements

1️⃣ Encapsulation

• Vehicle class has private fields:
  • brand (String)
  • speed (int)
• Public getter & setter methods control access.

2️⃣ Inheritance

• Subclasses:
  • Car → extra field: fuelType (String)
  • Bike → extra field: engineCC (int)

3️⃣ Method Overriding

• Each subclass overrides showDetails() to print vehicle-specific data.

4️⃣ Upcasting and Downcasting

• Upcasting: Treat Car or Bike objects as Vehicle references.
• Downcasting: Access subclass-specific fields safely after type checking.

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📂 Project Structure

├── src/
│ └── vms/
│ ├── Vehicle.java
│ ├── Car.java
│ ├── Bike.java
│ ├── Main.java
│ └── module-info.java
├── bin/ # Compiled .class files
├── .classpath
├── .project
├── README.md
└── .settings/

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Code Editor

• Eclipse

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Sample Output

The car fuel type is petrol
The engine cc of bike  is 250
Enfield
100

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