public ArrayList<Cd> finnAlleCder(String _artist){
		ArrayList<Cd> cder = new ArrayList<Cd>();		
		for(int i=0 ; i<cdListe.size() ; i++){
			Cd cdplaten = cdListe.get(i);
			if (cdplaten.visArtistNavn().equalsIgnoreCase(_artist)) {
				cder.add(cdplaten);	
			}
		}
		Collections.sort(cder);
		return cder;
	}




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	public ArrayList finnAlleCder (String artist) {
		ArrayList<String> cd2 = new ArrayList<String>();
		for (int i = 0; i < cdListe.size(); i++) {
			if (artist.equalsIgnoreCase(cdListe.get(i).visArtistNavn()))
				cd2.add(cdListe.get(i).visTittel());
		}
		Collections.sort(cd2);
		return cd2;
	}