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Start your free trialAbhishek Gangadhar
9,467 PointsError in my code - IllegalArgumentException
The error says that i should implement the code before it changes the value.. But aren't we suppose to check it after the change so the if the mBarsCount variable is less than 0 we can throw an 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) {
// Other driving code omitted for clarity purposes
mBarsCount -= laps;
if(mBarsCount<0){
throw new IllegalArgumentException("Too less Bars");
}
}
public void charge() {
while (!isFullyCharged()) {
mBarsCount++;
}
}
public boolean isBatteryEmpty() {
return mBarsCount == 0;
}
public boolean isFullyCharged() {
return mBarsCount == MAX_BARS;
}
}
1 Answer
Steve Hunter
57,712 PointsYes, that's right - I've answered in your other post - but here, you try
to call the method with the number of units you want to use. If that attempt fails, it'll throw the exception, else the code will continue.
Have a look at your other post - it'll make more sense there.
Steve.
Abhishek Gangadhar
9,467 PointsAbhishek Gangadhar
9,467 PointsWell that makes sense. But i got through the code challenge with this code...
isn't the value of num and nBarsCount same with the following statement for mBarsCount
mBarCount-=laps;
Steve Hunter
57,712 PointsSteve Hunter
57,712 PointsHi,
Yep - that code does the job just fine as far as it'll throw an exception if the number of laps is greater than the number of bars.
You'll need to add an
else
clause to yourif
to actually make the deuction if the test has determined that there are enough bars. Your suggested code would work fine for that too, yes. (as long as you change it tomBarsCount
notmBarCount
)Steve.