使用官方的java电子邮件包是最简单：

Using the official java email package is the easiest:

public static boolean isValidEmailAddress(String email) {
   boolean result = true;
   try {
      InternetAddress emailAddr = new InternetAddress(email);
      emailAddr.validate();
   } catch (AddressException ex) {
      result = false;
   }
   return result;
}

（EDIT）或简化：

public static boolean isValidEmailAddress(String email) {
   try {
      new InternetAddress(email).validate();
   } catch (AddressException ex) {
      return false;
   }
   return true;
}