public class MainVererbung4 {
	public static void main(String[] args){
		Modell m = new Modell(10,20);
		Gmodell g = new Gmodell(2,3,4);
		double f,x;
  
		f = g.getFlaeche();
		System.out.println("f="+f);
		// x = g.Modell::getFlaeche();
		//System.out.println("x="+x);
		x=g.getFlaeche();
		System.out.println("x="+x);		
	}
}

class Modell{  
//	private double l;
//	private	double b;
	
	protected double l;
	protected double b;
	
	public Modell(double pl, double pb){
		l = pl;
	    b = pb;
    }

	public double getL(){
		return(l);
    }

	public double getB(){
		return(b);
	}
	
	public double getFlaeche(){
		return(l*b);
	}
};

class Gmodell extends  Modell{  
	private double h;

	public Gmodell(double pl, double pb, double ph){
		super(pl,pb);
		h=ph;
		//b=6;
	}
	
/*	
	public double getFlaeche(){
		return(2*(h*b+h*l+l*b));
	}
*/	
}