Lab 5 %u2013 Abstract classes and Inheritance Instructions: Write an abstract su

Question

Lab 5 %u2013 Abstract classes and Inheritance

Instructions:

Write an abstract superclass encapsulating a vehicle: A vehicle has attributes: its owner%u2019s 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 value displacement, in liters; and a method computing and returning a measure of horse-power-the number of liters times the number of wheels.

Deliverables:

1.     Write the classes and test them with the supplied client code

2.     Explain why the line %u201C// Vehicle v = new Vehicle( "John", 4 ); %u201C would generate a compiler error.

The client (driver) class to test these classes is given below:

public class VehicleClient

{

public static void main( String [] args )

{

    // Line below would generate a compiler error

    // Vehicle v = new Vehicle( "John", 4 );

    MotorizedVehicle mv1 = new MotorizedVehicle( "Mike", 4, 3.2 );

    MotorizedVehicle mv2 = new MotorizedVehicle( "Sarah", 4, 4.0 );

    System.out.println( mv1 + " has " + mv1.horsePower( ) + " horsepower " );

    mv2.setOwner( mv1.getOwner( ) );

    if ( mv1.equals( mv2 ) )

      System.out.println( "mv1 and mv2 are equal" );

    else

      System.out.println( "mv1 and mv2 are not equal" );

    mv2.setVolumeDisplacement( mv1.getVolumeDisplacement( ) );

    if ( mv1.equals( mv2 ) )

      System.out.println( "mv1 and mv2 are now equal" );

    else

      System.out.println( "mv1 and mv2 are still not equal" );

    Bicycle b2 = new Bicycle( "Jane", 2 );

    System.out.println( " b2 is " + b2 );

}

}

Explanation / Answer

check the link http://ideone.com/6p7vgU

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