Min Max Sum Average [first one]

import java.io.IOException;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {

        List<Double> integerList = getIntegerList();
        System.out.println("min="+getMinimum(integerList));
        System.out.println("max="+getMaximum(integerList));
        System.out.println("sum="+getSum(integerList));
        System.out.println("avg="+String.format("%.2f",getAvg(integerList)));
    }

    public static double getMinimum(List<Double> array){
        return Collections.min(array);
    }

    public static double getMaximum(List<Double> array){
        return Collections.max(array);
    }

    public static double getSum(List<Double> array){
        return array.stream().mapToInt(Double::intValue).sum();
    }

    public static double getAvg(List<Double> array){
        double sum = 0;
        if (!array.isEmpty()){
            for (Double arr : array){
                sum+=arr;
            }
            return sum/array.size();
        }
        return sum;
    }

    public static List<Double> getIntegerList() throws IOException{
        Scanner scanner = new Scanner(System.in);
        double N = scanner.nextDouble();

        List<Double> newList = new ArrayList<>();
        for (int i=0; i<N; i++){
            newList.add(scanner.nextDouble());
        }
        return newList;
    }
}