Band theBeatles = new Band("THE BEATLES");
Artist ringo = new Artist("Ringo Starr");
Artist paul = new Artist("Paul Mc.Cartney");
Artist john = new Artist("John Lennon");
Adress adress = new Adress("Kings Road 1", "London", 12345);
john.setAdress(adress);
Artist george = new Artist("George Harrison");
theBeatles.getAritsts().addAll(Arrays.asList(ringo, paul, john, george));
//