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Start your free trialDaniel Schwemmlein
4,960 PointsStuck at the GoKart Java challenge
Hey there. I'm still stuck at this challenge where i was supposed to fill in a code that will prevent my goKart here from being over charged. Unfortunately for me I'm not able to do it. I even asked this question before but that answer did not help really
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 isBatteryEmpty() {
return mBarsCount == 0;
}
public boolean isFullyCharged() {
return mBarsCount == MAX_ENERGY_BARS;
boolean isFullyCharged = false;
if (!isBatteryEmpty()) {
mBarsCount--;
isFullyCharged = true;
}
return isFullyCharged;
} }
}
3 Answers
Ken Alger
Treehouse TeacherDaniel;
Let's have a look:
Task 1
Okay, so let's use our new
isFullyCharged
helper method to change our implementation details of thecharge
method. Let's make it so it will only charge until the battery reports being fully charged. Let's use the!
symbol and awhile
loop. Inside the loop incrementmBarsCount
.
It looks like you are working inside the isFullyCharged()
method and not the charge()
method like the challenge asks, but let's work through this as well.
We need our while
loop, again I don't see that in your code, to see if our battery is fully charged, and if it is not we charge it, right?
Something like:
public void charge() {
while (!isFullyCharged()) {
mBarsCount++;
}
}
This will utilize the isFullyCharged()
method, check to see if it is fully charged, and if not charge it until it is. Notice that we don't need to return anything with the charge()
method, it just does it's magic and then lets the program go about it's merry way.
Please post back if you are still stuck.
Happy coding,
Ken
Steve Hunter
57,712 PointsHi Daniel,
Have a look at a previous response I wrote in this to see if that helps.
https://teamtreehouse.com/forum/i-dont-understand-the-code-challenge-incrementing-and-decrementing
Cheers,
Steve.
Jess Sanders
12,086 PointsUse the following snippet of code as your example to follow:
public boolean dispense() {
boolean wasDispensed = false;
if (!isEmpty()) {
mPezCount--;
wasDispensed = true;
}
return wasDispensed;
}
- Instead of if, use while
- increment, rather than decrement
- The charge method doesn't need to return a boolean, so ignore all of the code involving the boolean wasDispensed
Keep isFullyCharged as it was from the previous challenge.
public boolean isFullyCharged() {
return mBarsCount == MAX_ENERGY_BARS;
}
MUZ140584 Heredity Mbundire
4,979 PointsMUZ140584 Heredity Mbundire
4,979 PointsisFullyCharged am stuck there