Reading mp3 Tags from Files

Posted 15 November 2012 - 06:57 AM

I am trying to read mp3 tags from files but I am having trouble. I am trying somethings that I found when researching this but I'm not sure if this is the best option. For example, when I run this program,

import java.io.*;

public class MP3 {
	public static void main(String[] args) {
		try {
			File song = new File("Sublime - Santeria.mp3");
			FileInputStream file = new FileInputStream(song);
			int size = (int)song.length();
			file.skip(size - 128);
			byte[] last128 = new byte[128];
			file.read(last128);
			String id3 = new String(last128);
			String tag = id3.substring(0, 3);
			if (tag.equals("TAG")) {
				System.out.println("Title: " + id3.substring(3, 32));
				System.out.println("Artist: " + id3.substring(33, 62));
				System.out.println("Album: " + id3.substring(63, 91));
				System.out.println("Year: " + id3.substring(93, 97));
			} else
				System.out.println(args[0] + " does not contain" + " ID3 information.");
			file.close();
		} catch (Exception e) {
			System.out.println("Error - " + e.toString());
		}
	}
}

I get the following output:
>javac MP3.java
>Exit code: 0
>java MP3
Title: Santeria
Artist: Sublime
Album: Sublime
Year: 1996

But after the title, artist, and album I get NULNULNULNULNULNUL... for quite a while. I'm not sure if this is because I am just showing the output in a print line statement or if there is another way I could accomplish this task.