package com.company;

import java.util.Scanner;

/*
Amon Guinan

Friday, January 25.
Program detects whether emails have a single "@" or not.
 */
public class exercises {
    public static void main(String [] args)
    {
        String email;

        System.out.println("Enter a valid email address.");
        Scanner input = new Scanner(System.in);
        email = input.nextLine();

        if(email.indexOf("@") == -1)
        {
            System.out.print("Invalid email address.");
            System.exit(255);
        }

        email = email.replaceFirst("@","_");

        if(email.indexOf("@") != -1){
            System.out.print("Invalid email address.");
        }
        else
        {
            System.out.print("Valid email address.");
        }





    }

}