import java.util.ArrayList;

public class BenytKompositmaterialer
{
	public static void main(String[] args)
	{
		ArrayList materialer = new ArrayList();
		materialer.add(new Sand(0.1));
		materialer.add(new Jern(10));
		materialer.add(new Beton(0.1,0.01,1.5,0.1));
		materialer.add(new Sten(0.1));

		for(int i = 0;i<materialer.size();i++)
		{
			Materiale m = (Materiale) materialer.get(i);
			System.out.println(m + " "+m.beregnPris(1)+" kr.");
		}
	}
}