import java.util.*;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.InputMismatchException;
import java.util.Scanner;

class AssignmentOne {
    public static void main(String[] args) throws FileNotFoundException, InputMismatchException {

        File file = new File("Numbers.txt");

        try {
            // Initialize Scanner with file
            Scanner in = new Scanner(file);

            double[] arr = new double[10]; // Initialize array
            Arrays.fill(arr, 0.0); // Fills all the array positions with 0.0

            // Maximum doubles is 10, but we are not sure if the text
            // file has 10 numbers so we use hasNextDouble
            double sum = 0;
            while (in.hasNext()) {
                try {
                    sum += in.nextDouble();
                } catch (InputMismatchException e) {
                    System.out.println("Found a non-numeric value in the file!");
                    in.close();
                    return;
                }
            }
            System.out.println(sum);
            in.close();
        } catch (FileNotFoundException e) {
            System.out.println("Cannot find the file Numbers.txt");
        }
    }
}