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Start your free trialJonathan Adams
544 Pointsstuck
Not sure what is wrong. The question is asking me to throw an illegal argument if they try to drive a lap without enough battery. Here is what I wrote
public void drive() {
int countBars = MAX_BARS - mBarsCount; //so a new object is 8 - (number of laps) if (countBars > MAX_BARS) { // if countBars is greater than 8 (max bars) throw new IllegalArgumentException("not enough battery"); //throw the method! } drive(1); }
to me it makes sense but i am getting an error telling me to make sure I have it set to throw an error.
public class GoKart {
public static final int MAX_BARS = 8;
private String mColor;
private int mBarsCount;
public GoKart(String color) {
mColor = color;
mBarsCount = 0;
}
public String getColor() {
return mColor;
}
public void drive() {
int countBars = MAX_BARS - mBarsCount;
if (countBars > MAX_BARS) {
throw new IllegalArgumentException("not enough battery");
}
drive(1);
}
public void drive(int laps) {
// Other driving code omitted for clarity purposes
mBarsCount -= laps;
}
public void charge() {
while (!isFullyCharged()) {
mBarsCount++;
}
}
public boolean isBatteryEmpty() {
return mBarsCount == 0;
}
public boolean isFullyCharged() {
return mBarsCount == MAX_BARS;
}
}
1 Answer
Jonathan Adams
544 PointsI was able to figure this one out. Here is the code
public void drive(int laps) { // Other driving code omitted for clarity purposes int countBars = MAX_BARS - mBarsCount; if (countBars > MAX_BARS) { throw new IllegalArgumentException ("Not enough battery"); }