Thread: An email validation in Java

HI Java professionals,
I want to validate an email input. The email input can only have one @ and at least one '.' after the @.
I would like to ask if my regex pattern is correct, thanks.

YOUR CODE HERE
import java.util.InputMismatchException;
import java.util.Scanner;
public class email
{
    public static void main(String []args)
    {
        Scanner reader =new Scanner(System.in);
        String input;
        while(true){
            try{
                System.out.print("Enter an email address:");
                input=reader.next();
                break;
            }catch(InputMismatchException e)
            {
                System.out.println("It is not an email address.");
                reader.nextLine();
            }
        }
        boolean test = isValidEmailAddress(input);
        System.out.println(test);
    }
 
    public static boolean isValidEmailAddress(String email) {
        java.util.regex.Pattern p = java.util.regex.Pattern.compile("^[(a-zA-Z-0-9-\\_\\+\\.)]+@[(a-z-A-z)]+\\.[(a-zA-z)]{2,3}$");
        java.util.regex.Matcher m = p.matcher(email);
        return m.matches();
    }
}

Please edit your post and wrap your code with code tags:
[code=java]
YOUR CODE HERE
[/code]
to get highlighting and preserve formatting.

One way to see if the program does what you want is to thoroughly test it.

What happens when you test it? Did it work as desired or did you find cases where it failed?
Post the cases where it fails.