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 trialBrandy Steals
Courses Plus Student 5,457 PointsHelp with Bummer: Make sure you throw the exception before you change the barCount and lapsDriven fields.
Am I updating the variables barCount and lapsDriven in the wrong location? It is after the exception.
class GoKart {
public static final int MAX_BARS = 8;
private String color;
private int barCount;
private int lapsDriven;
public GoKart(String color) {
this.color = color;
}
public String getColor() {
return color;
}
public void charge() {
barCount = MAX_BARS;
}
public boolean isBatteryEmpty() {
return barCount == 0;
}
public boolean isFullyCharged() {
return MAX_BARS == barCount;
}
public void drive() {
drive(1);
}
public void drive(int laps) {
int newAmount = barCount -= laps;
if (newAmount < 0) {
throw new IllegalArgumentException("Not Enough Bars!");
}
barCount = newAmount;
lapsDriven += laps;
}
}
1 Answer
Steven Parker
231,269 PointsCongratulations on resolving your own issue!
For the benefit of other readers, the "barcount" was being updated with a subtracting assignment ("-=") in the calculation instead of a simple subtraction ("-").
Brandy Steals
Courses Plus Student 5,457 PointsBrandy Steals
Courses Plus Student 5,457 PointsI was able to figure it out.