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Start your free trialTara Edwards
6,521 PointsAm I writing the throw command wrong?
I get 'symbol missing' errors. Which symbol am I missing?
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 mBarsCount = mBarsCount - laps;
if(mBarsCount < 0){
throw IllegalArgumentException("Not enough battery remains");
}
}
public void charge() {
while (!isFullyCharged()) {
mBarsCount++;
}
}
public boolean isBatteryEmpty() {
return mBarsCount == 0;
}
public boolean isFullyCharged() {
return mBarsCount == MAX_BARS;
}
}
2 Answers
Robert Richey
Courses Plus Student 16,352 PointsHi Tara,
That's a good attempt! There are a few things that need to be fixed.
// mBarsCount is already defined. remove the int type here
int mBarsCount = mBarsCount - laps;
// this is close, but we need to throw a 'new' error
throw IllegalArgumentException("Not enough battery remains");
// check if mBarsCount is already at zero before attempting to subtract from it
// if mBarsCount <= 0, throw error, else decrement mBarsCount
Cheers
Seth Kroger
56,413 Pointsthrow needs an Exception object (actually a Throwable object, which Exception is a subclass of) to throw. You need to use the new keyword to create the exception you want to throw.
throw new IllegalArguemntException("message");