polymorphism: Return Values

In this problem, you will create a program that implements a createVehicle(boolean needsEngine) factory method returning Car or Bike objects as a Vehicle type based on a boolean argument, then calls getType() on each returned object and displays the vehicle type to standard output.

Learning Objective: Understand how to use parent class type as return value and return different subclass objects

Overview

You have Car and Bike classes that inherit from Vehicle class. Implement a factory method that returns different vehicle objects based on conditions.

Specifications

• Vehicle class: getType() method (returns "Unknown")
• Car class: getType() returns "Car"
• Bike class: getType() returns "Bike"
• createVehicle(boolean needsEngine) method: Returns Car if argument is true, Bike if false (return type is Vehicle)
• Call createVehicle() with both true and false for needsEngine, output getType() of returned objects

Output Format

Car
Bike