Collections.sort(records, new Comparator<Record>() {
                @Override
                public int compare(Record lhs, Record rhs) {
                    // -1 - less than, 1 - greater than, 0 - equal, all inversed for descending
                    return (lhs.getRSquared() > rhs.getRSquared()) ? -1 : (lhs.getRSquared() < rhs.getRSquared()) ? 1 : 0;
                }
            });