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2,951 PointsStuck on this challenge says " Make sure you throw the exception before you change the barCount and lapsDriven fields."
What am I doing wrong here?
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 totalLaps = lapsDriven += laps;
barCount -= totalLaps;
if (totalLaps > MAX_BARS) {
throw new IllegalArgumentException("Not enough Energy!!!"); }
if (barCount < 0) {
throw new IllegalArgumentException("Not enough Energy!!!"); }
totalLaps = totalLaps;
}
}
1 Answer
Steve Hunter
57,712 PointsHi there,
Yes, the purpose of throwing the error is to stop the user calling for more laps than bars. If this request happens, the kart should not drive, but the error should be thrown.
So, test if
the value held by barCount
is less than the number of requested laps
. If it is, throw the exception else
deduct laps
from barCount
. Also, add laps
to lapsDriven
I hope that helps,
Steve.