In Java, Compute Total Of ArrayList

import java.util.Scanner;
import java.util.ArrayList;
public class Main{

	public static double sum(ArrayList<Double> list){
		double total = 0;
		for(double value: list)
			total += value;
		return total;
	}

	private static ArrayList<Double> readNumbers(final Scanner in, final int count){
		ArrayList<Double> list = new ArrayList<>();
		double real;
		while(count > list.size()){
			System.out.print("Enter a number: ");
			try{
				real = new Double(in.nextLine());
				list.add(real);
			}catch(NumberFormatException e){
				System.out.println("Error: Not a number!");
			}catch(Exception e){
				System.out.println("Error: Something went wrong!");
				break;
			}
		}
		return list;
	}

	public static void main(String[]args){
		ArrayList<Double> list = readNumbers(new Scanner(System.in), 5);
		double total = sum(list);
		System.out.printf("Sum of %s is: %.2f%n", list, total);
	}
}

Download