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# Why is this not working?

public boolean charge() { boolean isFullyCharged = false; if (!isFullyCharged()) { mBarsCount++; isFullyCharged = true; } return isFullyCharged; }

GoKart.java
public class GoKart {
public static final int MAX_ENERGY_BARS = 8;
private String mColor;
private int mBarsCount;

public GoKart(String color) {
mColor = color;
mBarsCount = 0;
}

public String getColor() {
return mColor;
}

public void charge() {
mBarsCount = MAX_ENERGY_BARS;
}

public boolean charge() {
boolean isFullyCharged = false;
if (!isFullyCharged()) {
mBarsCount++;
isFullyCharged = true;
}
return isFullyCharged;
}

public boolean isBatteryEmpty() {
return mBarsCount == 0;
}

public boolean isFullyCharged() {
return mBarsCount == MAX_ENERGY_BARS;
}

}

Hi,

Not sure what you are trying to do, but you have two charge() methods that only differ by return type. If you meant to overload the charge() method then you need to make they differentiate by number or types (or both) of the arguments. See here: http://docs.oracle.com/javase/tutorial/java/javaOO/methods.html.

Hope this helps.

STAFF

Yeah, only need one charge method.

Did you see this part of the instructions?

Let's use the ! symbol and a while loop. Inside the loop increment mBarsCount.