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Start your free trialSarfaraj Alam
14,074 PointsCode Challenge: Throwing Exception
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) { throw new IllegalArgumentException("Not enough battery remains");// Other driving code omitted for clarity purposes mBarsCount -= laps;
}
public void charge() { while (!isFullyCharged()) { mBarsCount++; } }
public boolean isBatteryEmpty() { return mBarsCount == 0; }
I am not able to find where is mistake?
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) {
throw new IllegalArgumentException("Not enough battery remains");// 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;
}
}
3 Answers
Grigorij Schleifer
10,365 PointsHi Sarfaray,
you need an if statement to proof whether the amount of laps not greater then the count of bars (mBarsCount). If more laps then mBarsCount then you should throw an exception inside the if block. Otherwise decrease the mBarsCount by number of laps.
Try to do it yourself. Shout out if you need a spoiler code :)
Grigorij
Piotr Stefański
3,080 PointsHello,
This is not so hard, you need to remember that, you need to throw exception only when laps are greater than mBarsCount.
So in this case you need to have following code:
public void drive(int laps){ if (laps > mBarsCount){ throw new IllegalArgumentException("Not enough battery remains"); } mBarsCount -= laps; }
Hope that helps.
Sarfaraj Alam
14,074 PointsThank you so much