import java.util.ArrayList;

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

public static void main (String[]args){


ArrayList <Integer> myClassrom = 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);
}