Notify.java

public class Notify implements SmsSender, EmailSender {
  @Override
  public class send(){
   //Todo: try to send something
    
    // What if now I only want to use default send() method from SmsSender
    // You can call the default method of SmsSender using super keyword
    SmsSender.super.send();
    
    //similarly you can call send method from EmailSender
    EmailSender.super.send();
  }
}