Question

JAVA CODING PLEASE

Create a class SportsCar that inherits from the Car class (CAR CLASS LISTED BELOW THIS QUESTION).

Include the following:

• A variable Roof that holds the type of roof (Ex: Convertible, Hard-Top, Soft-Top)
• A variable Doors that holds the car’s number of doors (Ex: 2, 4)
• Implement the ChangeSpeed method to add 20 to the speed each time it is called.
• Add exception handling to the ChangeSpeed method to keep the speed under 65.
• Implement the sound method to print, “brooooom,” to the screen.
• Create one constructor that accepts the car’s roof, doors, year and make as arguments and assigns the values appropriately. Do not create any other constructors.
• The interface methods should print simple messages to the screen using System.out.println()

CAR CLASS:

interface Vehicle{
        void Start();
        void Stop();
        void ChangeSpeed();
}
abstract class Car implements Vehicle{
        private int year;
        private int speed;
        private String make;
        private static int count=0;
        public Car(int aYear, String aMake) {
                year = aYear;
                make = aMake;
                speed=0;
                count++;
        }
        abstract void sound();
        public static int getCount() {
                return count;
        }
        
}

Answer 1

class SportsCar extends Car{
   private String roof;
   private int doors;
   public SportsCar(String r,int d,String m) {
       super(0,m);
       roof=r;
       doors=d;
   }
   public void ChangeSpeed() {
       speed+=20;
       if(speed>65) {
           throw new IllegalArgumentException("Invalid Speed");
       }
      
   }
   public void sound() {
       System.out.println("broooom");
   }
   @Override
   public void Start() {
      
   }
   @Override
   public void Stop() {
   }
}

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