Vehicle-Management-System

a real-world example question that involves both method overloading and method overriding in Java:

Question: Vehicle Management System

Problem Statement

You are tasked with developing a simple vehicle management system for a vehicle rental company. The system needs to manage different types of vehicles and calculate rental costs based on the type and rental duration. You need to implement the following:

1. Vehicle Class:

   • A base class Vehicle with attributes make, model, and year.
   • A method getRentalCost(int days) to calculate the rental cost.

2. Car and Bike Classes:

   • Two derived classes Car and Bike that inherit from Vehicle.
   • Override the getRentalCost(int days) method to provide specific rental cost calculations for cars and bikes.

3. Rental Cost Calculation:

   • The base Vehicle class should provide a default rental cost calculation.
   • The Car class should charge a flat rate per day plus an additional fee for each day.
   • The Bike class should charge a flat rate per day with no additional fees.

4. Method Overloading:

   • Overload the getRentalCost method in the Vehicle class to allow calculating the rental cost for both days and hours. The method getRentalCost(int days, int hours) should calculate the cost by converting hours to a fraction of a day.

Requirements

1. Vehicle Class:

   • Attributes: make (String), model (String), year (int).
   • Methods:
     • getRentalCost(int days): Returns the rental cost for the given number of days.
     • getRentalCost(int days, int hours): Returns the rental cost for the given number of days and hours.

2. Car Class:

   • Inherits from Vehicle.
   • Overrides getRentalCost(int days) to charge $50 per day plus $20 additional fee for each day.

3. Bike Class:

   • Inherits from Vehicle.
   • Overrides getRentalCost(int days) to charge $20 per day with no additional fees.

4. Main Program:

   • Create instances of Car and Bike.
   • Demonstrate method overloading and overriding by calculating rental costs for different durations.

Example Output

Car Rental for 3 days: $210
Car Rental for 2 days and 12 hours: $180
Bike Rental for 3 days: $60
Bike Rental for 2 days and 12 hours: $50

Explanation of Features

1. Method Overloading:

   • The getRentalCost(int days) method is overloaded with another method getRentalCost(int days, int hours) in the Vehicle class to handle both days and hours.

2. Method Overriding:

   • The Car and Bike classes override the getRentalCost(int days) method from the Vehicle class to provide specific rental cost calculations.

This example allows you to demonstrate understanding and implementation of both method overloading and overriding in a practical scenario.

SELF TRY - LEARN JAVA - Q2