Question

Write the following program in Java.

Create an abstract Vehicle class

- Vehicle should have a float Speed and string Name, an abstract method Drive, and include a constructor.

Create a Tesla class

- Tesla inherits from Vehicle.

- Tesla has an int Capacity.

- Include a constructor with the variables, and use super to set the parent class members.

- Override Drive to increase the speed by 1 each time.

- Add a toString to print the name, speed, and Capacity as shown:

Name: Model X

Speed: 1.0

Capacity: 100

Create a Client that does the following:

- Create a Tesla

- Drive it one time

- Print out the Name, Speed, Capacity

- Drive it one more time

- Print out the Name, Speed, Capacity again

Answer 1

abstract class Vehicle {
   float speed;
   String name;

   public Vehicle(float aSpeed, String aName) {
       super();
       speed = aSpeed;
       name = aName;
   }

   abstract void drive();
}

class Tesla extends Vehicle {
   int capacity;

   // constructor to initialize the values
   public Tesla(float aSpeed, String aName, int cap) {
       super(aSpeed, aName);
       capacity = cap;
   }

   // overridden the drive method to increase speed by 1
   public void drive() {
       speed++;
   }

   // printing object details
   @Override
   public String toString() {
       return "Capacity : " + capacity + ", Speed : " + speed + ", name : " + name;
   }

}

public class TestVehicle {
   public static void main(String[] args) {
       Tesla t = new Tesla(100, "Telsa", 4);
       t.drive();
       System.out.println(t);
       t.drive();
       System.out.println(t);

   }
}