Download File in a Server-Client Application

This program downloads a mp3 file from server to client using TCP socket connection. AudioFile is a user defined class.

Client Side Code

public void downloadAudio(AudioFile a) {
    File myDir = null;
    try {
        myDir = new File("Downloads");
        myDir.mkdir();
        
        getConnection();
        oos = new ObjectOutputStream(soc.getOutputStream());
        oos.writeObject(a);

        in = new BufferedInputStream(soc.getInputStream());
        File f = new File("Downloads/" + a.getTrackName() + ".mp3");
        out = new FileOutputStream(f);

        int i = 0;
        downloaded = 0;
        
        byte[] bytesIn = new byte[1024];
        while ((i = in.read(bytesIn)) >= 0) {
            out.write(bytesIn, 0, i);
            downloaded += bytesIn.length;
        }
        out.close();
        in.close();
    } catch (Exception e) {
        e.printStackTrace();
        JOptionPane.showMessageDialog(null, e, "Error", JOptionPane.ERROR_MESSAGE);
    }
}

Server Side Code

private void download(File file) {
    try {
        out = new BufferedOutputStream(soc.getOutputStream());
        in = new FileInputStream(file);
        int i = 0;
        byte[] bytesIn = new byte[1024];
        while ((i = in.read(bytesIn)) >= 0) {
            out.write(bytesIn, 0, i);
        }
        out.close();
        in.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}