Vehicle.java

/*

Asked by KJ on Yahoo! Answers 01.12.2013:

"Write an abstract superclass encapsulating a vehicle:

A vehicle has two attributes: its owner's name and its number of wheels.
 This class has two non-abstract subclasses: one encapsulating a bicycle, and
 the other encapsulating a motorized vehicle. A motorized vehicle has the following
 additional attributes: its engine volume displacement, in liters; and a method computing
 and returning a measure of horsepower which is the number of liters times the number of
 wheels. You also need to include a client class to test these two classes."

*/

public abstract class Vehicle {

    private String ownerName;
    private int numWheels;

    public Vehicle() {} // default constructor

    public Vehicle(String name, int wheels) { // overloaded constructor
        this.ownerName = name;
        this.numWheels = wheels;
    }
}