problem when compiling

public void run() {
    String choice = "";
    do {
      try {
      choice = promptAction();
      switch(choice) {
        case "add":
          Song song = promptNewSong();
          mSongBook.addSong(song);
          System.out.printf("%s added: %n%n", song);
          break;
        case "quit":
          System.out.println("Thanks for playing!");
          break;
        case "choose":
          String artist = promptArtist();
          Song artistSong = promptSongForArtist(artist);
          // TODO: Add to a song queue.
          System.out.printf("You chose: %s %n", artistSong);
          break;
        default:
          System.out.printf("Unknown choice: '%s'. Try Again. %n%n%n", choice);
      }
      } catch (IOException ioe) {
        System.out.println("Problem with input");
        ioe.printStackTrace();
      }
    } 
    while (!choice.equals("quit"));
  }

private String promptArtist() throws IOException {
    System.out.println("Available artists:");
    List<String> artists = new ArrayList<>(mSongBook.getArtists());
    int index = promptForIndex(artists);
    return artists.get(index);
  }

  private String promptSongForArtist(String artist) throws IOException {
    List<Song> songs = mSongBook.getSongsForArtist(artist);
    List<String> songTitles = new ArrayList<>();
    for (Song song : songs) {
      songTitles.add(song.getTitle());
    }
    int index = promptForIndex(songTitles);
    return songs.get(index);
  }

  private int promptForIndex(List<String> options) throws IOException {
    int counter = 1;
    for (String option : options) {
      System.out.printf("%d.)  %s %n", counter, option);
      counter++;
    }
    String optionAsString = mReader.readLine();
    int choice = Integer.parseInt(optionAsString.trim());
    System.out.print("Your choice: ");
    return choice - 1;
  }