e-mail-Regex

// + - space REGEX
        ("[+-]+")

//Email regex 1
Scanner scanner = new Scanner(System.in);
        String text = scanner.nextLine();
        Pattern emailPattern =
Pattern.compile("([_A-Za-z0-9-]+)(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*(\\.[A-Za-z]{2,})");
        Matcher matcher = emailPattern.matcher(text);
        while (matcher.find()) {
            System.out.println(matcher.group());
        }
//Email regex 2
String emailMatcher = "((?<=\\s)|^)([a-z0-9][a-z0-9\\-._]*[a-z0-9])@([a-z0-9][a-z0-9\\-]*[a-z0-9]\\.)+[a-z0-9]+";
        Pattern pattern = Pattern.compile(emailMatcher);
        Matcher matcher = pattern.matcher(text);

        while(matcher.find()) {
        System.out.println(matcher.group());
        }
//Email regex 3
String text = input.nextLine();
        Pattern email = Pattern.compile("[a-zA-Z0-9]+[.-_]?[a-zA-Z0-9]+@{1}[a-zA-Z]+[.-]?[a-zA-Z]+[.]?[a-zA-Z]+");

        Matcher m = email.matcher(text);

        while (m.find()){
            System.out.println(m.group());
        }