Read MP3 file header information (id3v1)

A relatively simple program does not have much to use. I just want to know if it will produce results.

Tired is very tired, but still feel very passionate!
It feels good to write a bit of information about reading the MP3 file ID3V1!
Recently, I used Swing to write a program for renaming MP3 files based on tag information. It seems that it is not very difficult to hear this, but many problems have been encountered in the actual process, all need to be solved one by one!
One of the major mistakes I made when searching for help was that I didn't save or link some good articles.
Otherwise, paste the program that reads the MP3 file header information first:

/**//**
* Created on 5:10:29
* @ Author: Confused ghost
*/
Public class ReadMp3ID3v1Info {
Private static final int tag size = 128;
Private static final int TITLE_SIZE = 30;
Private static final int ARTIST_SIZE = 30;
Private static final int ALBUM_SIZE = 30;
Private Static final int year_size = 4;
Private Static final int comment_size = 29;
Private Static final int track_location = 126;
Private Static finals int genre_location = 127;
Private Static final int max_genre = 255;
Private Static final int max_track = 255;
Private Static final string enc_type = "cp437 ";
Private Static final string tag_start = "tag ";

Public static void main (string [] ARGs ){
Try {
File MP3 = new file ("F:/music/MP3/English singer/Madonna-musicloud ");
Randomaccessfile RAF = new randomaccessfile (MP3, "R ");
Raf. Seek (RAF. Length ()-tag_size );
Byte [] Buf = new byte [tag_size];
Raf. Read (BUF, 0, tag_size );
String tag = new String (buf, 0, TAG_SIZE, "Cp437 ");
Int start = TAG_START.length ();
System. out. println ("file name:" + mp3.getName ());
System. out. println ("title:" + tag. substring (start, start + = TITLE_SIZE). trim ());
System. out. println ("Artist:" + tag. substring (start, start + = ARTIST_SIZE). trim ());
Raf. close ();

System. out. println ("======================================" );

File mp32 = new File ("F:/music/MP3/English combination/blue-you make me wanna.mp3 ");
Raf = new RandomAccessFile (mp32, "r ");
Raf. seek (raf. length ()-128 );
Raf. read (buf, 0,128 );
Tag = new String (buf, 0,128, "Cp437 ");
Start = TAG_START.length ();
System. out. println ("file name:" + mp32.getName ());
System. out. println ("title:" + tag. substring (start, start + = 30). trim ());
System. out. println ("Artist:" + tag. substring (start, start + = 30). trim ());
Raf. close ();
} Catch (Exception e ){
}
}
}

The running result is:
File Name: Madonna-musicloud
Title: Music
Artist: Madonna
==========================================
File Name: blue-you make me wanna.pdf
Title: U Make Me Wanna
Artist: Blue