Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialNeil Gordon
8,823 Pointshaving syntax challenge with throwing argument
public void drive(int laps) { // Other driving code omitted for clarity purposes mBarsCount -= laps; int newlaps = mBarsCount-laps;
if (newlaps < mBarsCount) {
throw new IllegalArgumentException("Not enough battery remains");
} mBarsCount=newlaps;
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;
int newlaps = mBarsCount-laps;
if (newlaps < mBarsCount) {
throw new IllegalArgumentException("Not enough battery remains");
} mBarsCount=newlaps;
}
public void charge() {
while (!isFullyCharged()) {
mBarsCount++;
}
}
public boolean isBatteryEmpty() {
return mBarsCount == 0;
}
public boolean isFullyCharged() {
return mBarsCount == MAX_BARS;
}
}
2 Answers
Andrew Dummer
6,885 PointsYou may be overcomplicating it. You can just check if the number of laps
is greater than mBarsCount
. If it is, throw the argument exception. Like this : if (laps > mBarsCount) { throw new IllegalArgumentException("Not enough battery remains");
Neil Gordon
8,823 Pointsi really did , thank you . I was also placing my throw in the wrong order