Whats wrong with my program?

Question

import java.util.Scanner;

public class Main {
Static double sum;
public static void main(String[] args) {
Scanner read = new Scanner(System.in);
double score1 = read.nextDouble();
double score2 = read.nextDouble();
double score3 = read.nextDouble();
double score4 = read.nextDouble();
double avgScore = getAverageScore(score1, score2, score3, score4);
System.out.println(avgScore);
}
//create your method here
public static double getAverageScore(double a,double b,double c, double d) {
sum = a+b+c+d;
double res = sum/4;
return res;

}
}

Answer 1

static double sum; // small s in static

Answer 2

Oh, what a stupid mistake😅