find sum and average of n numbers

public class Solution {
    public static void main(String[] args) {
        Scanner ip = new Scanner(System.in);
        double input = ;
        int count = ;
        double sum = ;
        while (input != -) {
            System.out.print("Enter input:(-1 to stop): ");
            input = ip.nextDouble();
            if (input != -) {
                sum = sum + input;
                ++count;
            }
        }
        System.out.println("Averager of " + count + " numbers is " + (sum / count) + " and its sum: " + sum);
        ip.close();
    }
}

OUTPUT:
Enter input:(- to stop):
Enter input:(- to stop):
Enter input:(- to stop):
Enter input:(- to stop): -
Averager of  numbers is 20.0 and its sum: 60.0