Hello,

For my Java Object Oriented Programming class, we are learning about polymorphism and abstract classes. I unfortunately had to miss one of the lectures so I am a bit confused on how to get this program going. Here's what needs to be done with the program and one of the pre-defined classes is attached to here. This will need to use polymorphism as well.

//Abstract class ParkingSpace

package parking_space;

abstract public class ParkingSpace {

private int spaceNum;

private boolean isEmpty;

public ParkingSpace(int spaceNum)

{

this.spaceNum = spaceNum;

}

public int getSpaceNum() {

return spaceNum;

}

public boolean isEmpty() {

return isEmpty;

}

public void setEmpty(boolean isEmpty) {

this.isEmpty = isEmpty;

}

//It is to show the type of the parking space.

//Subclasses will override it.

abstract public void showSpaceType();

}

Create a Java project named CS235PA4. Right click "src" to import the jar file Parking (General->Archive File). You will find an abstract class called ParkingSpace is defined, which includes an abstract method showSpaceType to show the type of the parking space. 1. Define a class RegularParkingSpace, which is a subclass of ParkingSpace. Add a constructor which makes a regular parking space with a given space number. Override the abstract method showSpaceType to show this is a "Regular Parking Space". 2. Define a class HandicappedParkingSpace, which is a subclass of ParkingSpace. Add a constructor which makes a handicapped parking space with a given space number. Override the abstract method showSpaceType to show this is a "Handicapped Parking Space" 3. Define a class ParkingLot. A parking lot generally has a number of parking spaces. (You are asked to use composition) 4. a. Add a default constructor which initiae a prking lot with 5 parking spaces. The first two spaces numbered 1000 and 1001 are handicapped parking spaces. The left three spaces numbered 1002, 1003 and 1004 are regular parking spaces. Add a method that returns the number of parking spaces in the parking lot. Add getters as needed. b. c. Define a driver class TestParking. In its main method, declare and instantiate a parking lot using default constructor. Print the type of every parking space in this parking lot, such as 5. "Parking space 10: It is a handicapped parking space." Your code MUST reflect the use of polymorphism. Otherwise, this assignment will be failed. Create a Jar file for your project and upload to PA4 on D2L. Wrong submission will result penalty