การตรวจสอบอีเมล

class EMailChecker {
  public static void main(String[] args) {
    String address = "[email protected]";
    int addLen = address.length();

    // Write the correct logical operator to make sure the address is valid
    if (address.contains("@") ____ address.charAt(addLen - 4) == '.') {
      System.out.println("Send that email !");
    } else {
      System.out.println("That's not a valid email");
    }
  }
}