Question

In Java:

Requirements:

1. Create a class called Bike.

2. Create these private attributes:

• int currentSpeed
• int currentGear
• String paintColor

3. Create a constructor that takes 2 arguments: speed, gear, color.

4. Create another constructor that takes no arguments.

5. Create a method called goFaster(int amount) which increases the speed by the given amount.

6. Create a method called brake() which sets the speed to 0.

7. Create a method called print() which describes the bike and the speed it is going.

8. Create another class RoadBike that extends Bike.

9. RoadBike has an attribute of int seatHeight.

10. Create a constructor that takes speed, gear, color, heightOfSeat and creates a RoadBike.

11. Create a method called print() which describes the bike. This method should call the Bike print method and then print heightOfSeat.

12. Create a class called Test with static main that does the following:

• Bike myFirstBike = new Bike();
• myFristBike.print();
• RoadBike myRoadBike= RoadBike(3,5,"blue", 25);
• myRoadBike.goFaster(5);
• myRoadBike.brake();
• myRoadBike.goFaster(7);
• myRoadBike.goFaster(2);
• myRoadBike.print();

Answer 1

Hi,

Please find the code below and output attached.

class Bike
{

private int currentSpeed;
private int currentGear;
private String paintColor;
  
Bike()
{
currentGear = currentSpeed = 0;
paintColor = "";
}
  
Bike(int CS, int CG,String PC)
{
currentSpeed = CS;
currentGear = CG;
paintColor = PC;
}
  
void goFaster(int amount)
{
currentSpeed = currentSpeed + amount;
}
  
void brake()
{
currentSpeed =0;
}
  
void print()
{
System.out.println("Current speed: "+currentSpeed+" currentGear: "+currentGear+"paintColor: "+paintColor);
}

}
class RoadBike extends Bike
{
private int seatHeight;
RoadBike(int CS,int CG,String PC,int SH)
{

super(CS,CG,PC);
seatHeight = SH;
}
@Override
void print()
{
super.print();
System.out.println("Height of Bike Seat:"+seatHeight);
}
  
}
public class Test
{
   public static void main(String[] args)
   {
       Bike myFirstBike = new Bike();
myFirstBike.print();
  
RoadBike myRoadBike = new RoadBike(3,5,"blue", 25);
myRoadBike.print();
myRoadBike.goFaster(5);
myRoadBike.print();
myRoadBike.brake();
myRoadBike.print();
myRoadBike.goFaster(7);
myRoadBike.print();
myRoadBike.goFaster(2);
myRoadBike.print();

   }
}

output:

Thanks,

kindly upvote.