extract meta data from mp3 files

gistfile1.txt

String artist = null;
String album = null;
String track = null;
byte[] imageData = null;
long duration = 0;
try {
    Mp3File mp3file = new Mp3File(songLocation);
    if (mp3file.hasId3v2Tag()) {
        ID3v2 id3v2Tag = mp3file.getId3v2Tag();
        imageData = id3v2Tag.getAlbumImage();
        artist = (id3v2Tag.getArtist() != null && !id3v2Tag.getArtist().isEmpty() ? id3v2Tag.getArtist() : null);
        album = (id3v2Tag.getAlbum() != null && !id3v2Tag.getAlbum().isEmpty() ? id3v2Tag.getAlbum() : null);
        track = (id3v2Tag.getTitle() != null && !id3v2Tag.getTitle().isEmpty() ? id3v2Tag.getTitle() : null);
    }
    if (mp3file.hasId3v1Tag()) {
        ID3v1 id3v1Tag = mp3file.getId3v1Tag();
        if (artist == null) {
            artist = (id3v1Tag.getArtist() != null && !id3v1Tag.getArtist().isEmpty() ? id3v1Tag.getArtist() : null);
        }
        if (album == null) {
            album = (id3v1Tag.getAlbum() != null && !id3v1Tag.getAlbum().isEmpty() ? id3v1Tag.getAlbum() : null);
        }
        if (track == null) {
            track = (id3v1Tag.getTitle() != null && !id3v1Tag.getTitle().isEmpty() ? id3v1Tag.getTitle() : null);
        }
    }
    artist = artist != null ? artist : "Unknown Artist";
    album = album != null ? album : "Unknown Album";
    track = track != null ? track : "Unknown Track";
    duration = mp3file.getLengthInSeconds();
} catch (IOException | UnsupportedTagException | InvalidDataException e) {
    e.printStackTrace();
}