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Java Java Objects Harnessing the Power of Objects Throwing Exceptions

Amulya Arora
Amulya Arora
6,133 Points
Posted by Amulya Arora
Amulya Arora
6,133 Points

what should i do

how to complete this code

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;
  }

  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 void drive() {
    drive(1);
  }

  public void drive(int laps) {
   int newAmount= lapsDriven + barCount;
    if (newAmount > MAX_BARS) {
      throw new IllegalArgumentException("Too many laps");
    }
    lapsDriven += laps;
    barCount -= laps;
  }
}

2 Answers

Vladut Astalos
Vladut Astalos
11,246 Points
Vladut Astalos
Vladut Astalos
11,246 Points

Since for every lap driven you subtract 1 of your barCount, you need to check if the laps number passed into function as argument is not bigger that your barCount.

public void drive(int laps){
if(laps > barCount){
   throw new IllegalArgumentException("Not enough bars.");
}
lapsDriven += 1;
barCount -= 1;
}