public interface Playable {
	public void play();
}


class MP3Player implements Playable{
    private String[] songs;         // lista utworĂłw w odtwarzaczu
    private Integer actualSong;     // numer aktualnie odtwarzanego utworu
    private int n;                  // liczba piosenek na liscie utworow
    static String color = new String("Niebieski");

    public void addSong(String song) {
        songs[n++] = song;
        
    }

    public void nextSong() {
        actualSong = (actualSong + 1) % songs.length;
    }
    
    MP3Player(int max)
    {
    	songs = new String[max]; 
    	actualSong = 0;
    }
    
    public void uploadNewSongs(String[] a)
    {
    	songs =  a;
    }

	@Override
	public void play() {
		System.out.println(actualSong + " " + songs[actualSong]);
		
		
	}
    
    
}

class KidToy{
    String name;                    // rodzaj zabawki

   public Boolean equals(KidToy abc, KidToy asd)
   {
	   if(abc.name.equalsIgnoreCase(asd.name))
	   {
		   return true;
	   }
	   else
	   {
		   return false;
	   }
   }
    
    public KidToy(String name) {
        this.name = name;
    }

	
}



class ElectronicKidToy extends KidToy implements Playable{
	public ElectronicKidToy(String _name, String _song) {
		super(_name);
		song = _song;
		
	}

	private String song;
	
	public void getSong()
	{
		System.out.println(song + " " + song + " " + song + "...");
	}
	
	@Override
	public void play() {
		System.out.println(song);
		
	}
}

public class POB2015Java {
    public static void main(String[] args) {
        System.out.println("s123456");
        MP3Player m1 = new MP3Player(10);
        m1.addSong("Lalala");
        Playable[] tablica = new Playable[10];
        tablica[0] = new ElectronicKidToy("Piesek", "Hau");
        
        tablica[1] = m1;
        for(int i = 0; i < 2; i++)
        {
        	tablica[i].play();
        }
        
        
    }
}