Untitled

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        Playlist playlist = new Playlist();


        Track track1 = new Track("meow1", "cat1");
        Track track2 = new Track("meow2", "cat2");
        Track track3 = new Track("meow3", "cat3");


        playlist.addTrack(track1);
        playlist.addTrack(track2);
        playlist.addTrack(track3);

        playlist.playCurrentTrack();
        playlist.switchToNextTrack();
        playlist.switchToNextTrack();
        playlist.switchToNextTrack();
        playlist.switchToNextTrack();
        playlist.switchToNextTrack();

    }
}

class Track {
    private String song;
    private String singer;

     Track(String song, String singer) {
        this.song = song;
        this.singer = singer;
    }
    String getSong() {
        return song;
    }

    String getSinger() {
        return singer;
    }

}
class Playlist{
    private List<Track> tracks;
    private int index=0;
    Playlist() {
        tracks = new ArrayList<>();
    }
    public void addTrack(Track track) {
        tracks.add(track);
    }
    public void switchToNextTrack() {
        if (tracks.isEmpty()) {
            System.out.println("Playlist is empty");
            return;
        }
        if(index<tracks.size() -1){
            index++;
            playCurrentTrack();
        }else{
            index=0;
            playCurrentTrack();
        }

    }
    public void playCurrentTrack() {
        Track currentTrack = tracks.get(index);
        System.out.println("Playing: " + currentTrack.getSong() + " " + currentTrack.getSinger());
    }
}

/*
Создать сущность трек, плейлист(автоматически переключать, повторять текущий трек)
Список всех треков.
 */