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Start your free trialChristopher Borchardt
2,908 PointsNot sure what I have wrong
I keep getting an error to make sure to throw the exception before changing mBarsCount, but I'm pretty sure that I am, the mBarsCoutn variable isn't changed till after the if statement
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() {
drive(1);
}
public void drive(int laps) {
// Other driving code omitted for clarity purposes
int newAmount = mBarsCount -= laps;
if (newAmount <0){
throw new IllegalArgumentException("Not enough battery remains!");
}
mBarsCount=newAmount;
}
public void charge() {
while (!isFullyCharged()) {
mBarsCount++;
}
}
public boolean isBatteryEmpty() {
return mBarsCount == 0;
}
public boolean isFullyCharged() {
return mBarsCount == MAX_BARS;
}
}
3 Answers
Jordan George
9,926 PointsI don't think -= is a real thing in this context.
Use this line for the if statement:
if(mBarsCount == 0)
or
int newAmount = mBarsCount - laps;
if(newAmount < 0)
Happy coding :)
Christopher Borchardt
2,908 Pointsthank you, i missed the = from when i had that as its own line, take that out and it worked fine.
Steve Goldman
2,345 Points1) I don't think you have to make a new int=newAmount. You can just say mBarsCount -=laps.
2) I think what he wants is that before you minus the laps from the bar count you should check if the battery is zero. Meaning let's check if the battery has charge in it before we start driving and subtracting bars
Hope that helps