At a loss on what's wrong with my code. Please help an idiot

[bitwhiz99805]

https://www.codecademy.com/en/courses/learn-java/projects/grades-analyzer

GradeAnalyzer.java:16: error: cannot find symbol
int average = sum / grades.size();
^
symbol: variable sum
location: class GradeAnalyzer
1 error

import java.util.ArrayList;
  
class GradeAnalyzer{
  public GradeAnalyzer(){
  }
  public int getAverage(ArrayList<Integer> grades){
    if (grades.size() < 1){
      System.out.println("Error! ArrayList is empty.");
      return 0;
    }
    else{
      int sum = 0;
      for (Integer grade : grades){
          sum = sum + grade;
    }
    }
  int average = sum / grades.size();
  System.out.println(average);
  return average;
  }

  public static void main(String[] args){
      ArrayList<Integer> myClassroom = new ArrayList<Integer>();
    myClassroom.add(98);
    myClassroom.add(92);
    myClassroom.add(88);
    myClassroom.add(75);
    myClassroom.add(61);
    myClassroom.add(89);
    myClassroom.add(95);
    GradeAnalyzer myAnalyzer = new GradeAnalyzer();
    myAnalyzer.getAverage(myClassroom);
    
  }
}

[rydan]

Sum is defined in this scope

else{
int sum = 0;
for (Integer grade : grades){
sum = sum + grade;
}
}

So it will only exist in the scope not outside of it. You are trying to use that variable outside of its scope here

int average = sum / grades.size();

that's why the compiler is complaining that it does not exist

[bitwhiz99805]

Thank you for you help!

[system]

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