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![Javier Perez Narvaez](https://secure.gravatar.com/avatar/dd97a7ad144e4a6c82456a4bc90517d8?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Javier Perez Narvaez
15,007 PointsEXCEPTION USE
Hi team, I don´t understand why it doesn't work!!!! Help me please...
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);
if (barCount < 0){
throw new IllegalArgumentException("Low Batery..");
}
}
public void drive(int laps) {
lapsDriven += laps;
barCount -= laps;
}
}
1 Answer
![jb30](https://secure.gravatar.com/avatar/681668d7cc4c5486851384a0feddda37?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
jb30
44,806 PointsInstead of throwing an exception upon determining that barCount
is already negative, the challenge wants you to throw an exception to prevent barCount
from getting an invalid value. It also is expecting you to modify the drive
method with the laps
parameter rather than the one with no parameters.