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Start your free trialRamzy Rashaun Arief
3,922 Pointsi dont know what is the problem
i'm confused
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
mBarsCount -= laps;
if(mBarsCount<0){
throw new IllegalArgumentException("Not enough battery");
}
}
public void charge() {
while (!isFullyCharged()) {
mBarsCount++;
}
}
public boolean isBatteryEmpty() {
return mBarsCount == 0;
}
public boolean isFullyCharged() {
return mBarsCount == MAX_BARS;
}
}
1 Answer
Corey Johnson
Courses Plus Student 10,192 PointsYou are very close! Good job. But you need to change a few things. First you do not want to modify the mBarsCount if the amount of laps passed in would throw the exception. So do the check first. Second.. you do not want mBarsCount to be negative, so change your check like below:
public void drive(int laps) {
// Other driving code omitted for clarity purposes
if(laps > mBarsCount) {
throw new IllegalArgumentException("Not enough battery remains");
}
mBarsCount -= laps;
}
Hope this helps!