Question 13: Consider the code given below.

1interface PlaylistIterator {
2    public boolean hasNextSong();
3    public Object getNextSong();
4}
5abstract class Song {
6    public abstract void play();
7}
8class SongPlaylist {
9    public SongPlaylist() {
10        private final int count = 3;
11        private Track[] songs = {new Track("Song A"), new Track("Song B"),
12                                new Track("Song C")};
13    }
14    private class Track extends Song {
15        private String title;
16        public Track(String title) {
17            this.title = title;
18        }
19        public void play() {
20            System.out.println("Playing: " + title);
21        }
22    }
23    private class PlaylistIter implements PlaylistIterator {
24        private int currentIndex;
25        public PlaylistIter() {
26            // Constructor
27
28        }
29        public boolean hasNextSong() {
30            // Check if there is a next song
31        }
32        public Object getNextSong() {
33            // Return the next song
34        }
35    }
36    public PlaylistIterator getIterator() {
37        return new PlaylistIter();
38    }
39}
40public class PlaylistTest {
41    public static void main(String[] args) {
42        SongPlaylist playlist = new SongPlaylist();
43        PlaylistIterator iter = playlist.getIterator();
44        while (iter.hasnext()){
45            -----------------------; //LINE 1
46        }
47    }
48}