package start6_2;

import java.util.Scanner;

public class HelpingHelper {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        double usefulInfo = obtainDouble(in);

        System.out.println("You entered: "+usefulInfo);
    }

    /**
     *
     * @param in
     * @return
     */
    private static double obtainDouble(Scanner in) {
        System.out.println("Please enter a positive double: ");
        double result = in.nextDouble();
        if(result <= 0) {
            System.out.println("I just can't take it any more!!");
            System.exit(1);
        }

        return result;
    }
}