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Start your free trialSimon Feuster
Full Stack JavaScript Techdegree Graduate 28,036 PointsIllegalArgumentException
Hi, can someone help me with this. I don't understand why the code isn't working. Thanks
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 = lapsDriven + laps;
if(newAmount > MAX_BARS) {
throw new IllegalArgumentException ("To many laps");
}
lapsDriven = newAmount;
barCount -= laps;
}
}
2 Answers
Steve Hunter
57,712 PointsHi Simon,
The error that the compiler reports with your code is Make sure you throw a new IllegalArgumentException if the requested amount of laps would make the battery less than zero.
The aim of the revised drive
method is to make sure that the received parameter value, laps
is not greater than the number of bars held in barCount
. So, if laps
is greater than barCount
throw the exception, if not, add laps
to lapsDriven
and deduct laps
from barCount
.
Make sense?
Steve.
P.S. You don't need any new variables for this challenge.
Simon Feuster
Full Stack JavaScript Techdegree Graduate 28,036 PointsYes I did. With your help it was easy to solve :) Thanks a lot
Steve Hunter
57,712 Points
Simon Feuster
Full Stack JavaScript Techdegree Graduate 28,036 PointsSimon Feuster
Full Stack JavaScript Techdegree Graduate 28,036 PointsHi Steve, thank you.
Steve Hunter
57,712 PointsSteve Hunter
57,712 PointsNo problem. Did you get it solved?