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 trialNathan Wagner
597 PointsCannot find symbol
during this challenge, even if I type out what it is telling me to type out it will still say that it cannot find symbol. Please help.
Nathan Wagner
597 Pointsthere is the code,
public boolean charger() {
boolean wasCharged = false;
if (!isCharged()) {
mBarsCount--;
wasCharged = true;
}
return wasCharged;
}
and here is the error
./GoKart.java:28: error: cannot find symbol
if (!isCharged()) {
^
symbol: method isCharged()
location: class GoKart
1 error
Gavin Ralston
28,770 PointsI can't read the code very well because it's not formatted, but I think I see the issue:
In the challenge, the method name isn't "isCharged()" it's "isFullyCharged()" so the symbol (that's the variable name) isn't being found because it can't find an "isCharged()" method.
Hope that helps. Or the answer I provided. :)
1 Answer
Gavin Ralston
28,770 PointsCannot find symbol means it cannot find the variable you're using.
In the case of this challenge, you can either store the result of the isFullyCharged() method directly in your while statement like:
while ( !isFullyCharged() ) {
//do something...
}
Or if it helps you work it out, store the result in a variable and plug it in:
boolean full = isFullyCharged();
while (!full) {
// do something
}
// when you exit the loop (finish charging) you'll do something else
To answer your comment on the original question, I think you'll want to use the defined method isFullyCharged() and not try to use isCharged() -- that method isn't defined, so it's a "symbol that can't be found" by the compiler. :)
Gavin Ralston
28,770 PointsGavin Ralston
28,770 PointsCould you post the code that you're putting in the challenge?
Also, if possible, try to get the exact error message from the "Preview" section if it's more than just a count of the errors.