interface Printer {
  void print(Message message);
}

class Message {
  private String message;

  public Message(String message) {
   this.message = message;
  }

  public void print(Printer printer) {
    printer.print(this);
  }

  public String toString() {
   return message;
  }
}

abstract class AbstractPrinterFactory {
  public static AbstractPrinterFactory getFactory(){
   return new SystemOutPrinterFactory();
  }

  public abstract Printer getPrinter();
}

class SystemOutPrinterFactory extends AbstractPrinterFactory {
  public Printer getPrinter() {
    return new SystemOutPrinter();
  }
}

class SystemOutPrinter implements Printer {
  public void print(Message message) {
   System.out.println(message);
  }
}

public class HelloWorld {
  public static void main(String[] args) {
   Message message = new Message("Hello, World!");
   AbstractPrinterFactory factory = AbstractPrinterFactory.getFactory();
   Printer printer = factory.getPrinter(); message.print(printer);
  }
}