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 trialEnyang Mercy
Courses Plus Student 2,339 PointsException handling protect the call the method by handling iae print out the message
how do i protect the call to kart.drive by handling the iae thrown?
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);
System.out.println("Not enough battery remains");
} catch (IllegalArgumentException iae) {
System.out.println("Oh no!");
System.out.println("The error was %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;
}
}
1 Answer
Pedro Cabral
33,586 PointsHi Enyang,
You have 3 problems in your catch block:
- The letter m in getmessage() should be capitalised: getMessage()
- You are missing a semicolon after getMessage());
- If you want to do string substitution you should use printf instead of println