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Java Java Objects Harnessing the Power of Objects Overload Methods

Chance Edward
Chance Edward
4,507 Points
Posted by Chance Edward
Chance Edward
4,507 Points

Create a new method named drive that accepts no arguments.

I'm stuck on this.

GoKart.java 
class GoKart {
    public static final int MAX_BARS = 8;
    private String color;
    private int barCount;
    private int lapsDriven;

    public GoKart(String color) {
        this.color = color;
        this.lapsDriven = 0;
    }

    public String getColor() {
        return color;
    }

    public void charge() {
        barCount = MAX_BARS;
    }

    public boolean isBatteryEmpty() {
        return barCount == 0;
    }

    public boolean isFullyCharged() {
        return MAX_BARS == barCount;
    }

    public int getBarCount() {
        return this.barCount;
    }

    public void drive(int laps) {
        lapsDriven += laps;
        barCount -= laps;
    }

    public int getLapDriven() {
        return this.lapsDriven;

    }
}

1 Answer

Rachel Johnson
STAFF
Rachel Johnson
Treehouse Teacher
Rachel Johnson
Rachel Johnson
Treehouse Teacher

Hey Chance Edward ! Thanks for reaching out.

Here we simply need to overload the existing drive method by initializing another one.

In the previous video at around the 4:15 mark we see Craig creating a second fill() method above the first one with no arguments. This method calls the original fill() method and passes it an argument.

We just have to do a similar thing for the challenge:

public void drive() {
  drive(1);
}

public void drive(int laps) {
  lapsDriven += laps;
  barCount -= laps;
}

The first drive method overloads the second one (the one with the int laps parameter)

I hope that helps!