106107108109110111112113114115
users.get( from ).getFriends().add( users.get( to ) ); } private void newArtist( long id, String name ) { Artist artist = new Artist(); artist.setId( id ); artist.setName( name ); artists.put( id, artist ); }
114115116117118119120121122123
artists.put( id, artist ); } private void newFan( long userId, long artistId ) { Artist artist = artists.get( artistId ); User user = users.get( userId ); user.getFavoriteArtists().add( artist ); artist.getFans().add( user ); }
125126127128129130131132133134135
private void newAlbum( long id, String title, long artistId, int year ) { Album album = new Album(); album.setId( id ); album.setTitle( title ); Artist artist = artists.get( artistId ); album.setArtist( artist ); album.setYear( year ); albums.put( id, album ); artist.getAlbums().add( album ); }