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Start your free trialAndrei Li
34,475 PointsProtect the call to kart.drive by handling the IllegalArgumentException. Why there is a compile err?
The code looks exactly as in a lesson.
class Example {
public static void main(String[] args) {
GoKart kart = new GoKart("purple");
if (kart.isBatteryEmpty()) {
System.out.println("The battery is empty");
}
try {
kart.drive(42);
}
catch (IllegalArgumentException iae) {
System.out.println("Not enough power %s", iae.getMessage());
}
}
}
class GoKart {
public static final int MAX_BARS = 8;
private int barCount;
private String color;
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) {
if (laps > barCount) {
throw new IllegalArgumentException("Not enough battery remains");
}
lapsDriven += laps;
barCount -= laps;
}
}
2 Answers
Pedro Cabral
33,586 PointsHi Andrei,
If you want to do in-place substitution you should use printf instead of println in your catch block.
Andrei Li
34,475 PointsI got it. Just before loosing all my patience :) Thank you, anyway!