I thought I would be able to create to separate methods to calculate a sum and a product.
public class Solution {
    public static void main(String[] args) {
        int c = 5;
        int d = 7;
        sum(c, d);
        product(c, d);
    }
    public sum(a, b){
        System.out.print(a + b);
    }
    public product(a, b){
        System.out.print(a * b);
    }
}
Why isn't this working?