Explicitly delegation sample.java

class View {
    
  void show() {
    print("View.show()");  
  }
    
}

class Screen {

  private View view; // delegation link
  
  public Screen(View view) {
    this.view = view;
  }

  void show() {
    view.show();
  }
  
}

View view = new View();
Screen screen = new Screen(view); // establish delegation between two objects
screen.show(); //View.show()