DecoratorDriver.java

package solver;

import decorators.BasicWindow;
import decorators.HorizontalScrollDecorator;
import decorators.IWindow;
import decorators.VerticalScrollDecorator;

public class DecoratorDriver {
	public static void main(String args[]){

		IWindow windows_with_horizontal_and_vertical_scroll =  //Note IWindow
			new VerticalScrollDecorator(  // Note how the constructors are structured
					new HorizontalScrollDecorator( 
							new BasicWindow()  
					) 
			);
		
		System.out.println( windows_with_horizontal_and_vertical_scroll.render(" DEMO ") );
		
	}
}