Question

Design and implement a program that reads a series of 10 integers from the user and prints their average. Read each input value as a string, then attempt to convert it to an integer using the Integer.parseInt method. If this process throws a NumberFormatException (meaning that the input is not a valid integer), display an appropriate error message and prompt for the number again. Continue reading values until 10 valid integers have been entered.

Answer 1

import java.util.Scanner;

public class ValidAverage {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        double total = 0;
        int num;
        for (int i = 0; i < 10; i++) {
            while (true) {
                try {
                    System.out.print("Enter a number: ");
                    num = Integer.parseInt(in.next());
                    total += num;
                    break;
                } catch (NumberFormatException e) {
                    System.out.println("That's not a valid integer. Try again!");
                }
            }
        }
        System.out.println("Average of entered numbers is " + (total/10));
    }
}