public int indexOfLargest(ArrayList<QuakeEntry> data) { double highestMag = 0.0; int indexOfLargest = 0; for (int index = 0; index < data.size(); index++) { QuakeEntry quakeEntry = data.get(index); if (quakeEntry.getMagnitude() > highestMag) { highestMag = quakeEntry.getMagnitude(); indexOfLargest = index; } } return indexOfLargest; }